JP2554066B2 - Intermetallic compound particle dispersion-reinforced die-cast composite material and method for producing the same - Google Patents
Intermetallic compound particle dispersion-reinforced die-cast composite material and method for producing the sameInfo
- Publication number
- JP2554066B2 JP2554066B2 JP61313715A JP31371586A JP2554066B2 JP 2554066 B2 JP2554066 B2 JP 2554066B2 JP 61313715 A JP61313715 A JP 61313715A JP 31371586 A JP31371586 A JP 31371586A JP 2554066 B2 JP2554066 B2 JP 2554066B2
- Authority
- JP
- Japan
- Prior art keywords
- intermetallic compound
- alloy
- composite material
- particle dispersion
- alni
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002245 particle Substances 0.000 title claims description 70
- 229910000765 intermetallic Inorganic materials 0.000 title claims description 57
- 239000002131 composite material Substances 0.000 title claims description 34
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 229910045601 alloy Inorganic materials 0.000 claims description 44
- 239000000956 alloy Substances 0.000 claims description 44
- 239000000843 powder Substances 0.000 claims description 36
- 229910001151 AlNi Inorganic materials 0.000 claims description 31
- 239000011159 matrix material Substances 0.000 claims description 26
- 238000004512 die casting Methods 0.000 claims description 24
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 10
- 239000006185 dispersion Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000000654 additive Substances 0.000 claims description 5
- 230000000996 additive effect Effects 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims 2
- 150000002739 metals Chemical class 0.000 claims 2
- 238000003756 stirring Methods 0.000 description 15
- 238000002156 mixing Methods 0.000 description 13
- 229910018507 Al—Ni Inorganic materials 0.000 description 10
- 238000012360 testing method Methods 0.000 description 10
- 239000002905 metal composite material Substances 0.000 description 7
- 238000001000 micrograph Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 238000007792 addition Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 229910018505 Ni—Mg Inorganic materials 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 3
- 238000009770 conventional sintering Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000010907 mechanical stirring Methods 0.000 description 2
- 238000010587 phase diagram Methods 0.000 description 2
- 238000004663 powder metallurgy Methods 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910021364 Al-Si alloy Inorganic materials 0.000 description 1
- 229910001111 Fine metal Inorganic materials 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011817 metal compound particle Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011208 reinforced composite material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は金属間化合物粒子分散強化型ダイカスト複合
材及びその製造方法に関する。TECHNICAL FIELD The present invention relates to an intermetallic compound particle dispersion-reinforced die casting composite material and a method for producing the same.
［従来の技術］ AlNi系金属間化合物粉末は耐酸化性で高硬度の粉末で
あり、同系のAl−Ni系マトリックス材とは濡れ性がよ
く、しかも安定性に優れている。しかし、該金属間化合
物粉末は、Al−Si系合金等の従来のアルミ合金溶湯中へ
直接添加すると短時間に溶解してしまうため、金属間化
合物粒子分散強化型の金属複合材は焼結法によって製造
している。[Prior Art] AlNi-based intermetallic compound powder is a powder having high resistance to oxidation and high hardness, and has good wettability with an Al-Ni-based matrix material of the same type and is also excellent in stability. However, since the intermetallic compound powder is dissolved in a short time when directly added to a conventional aluminum alloy molten metal such as Al-Si alloy, the intermetallic compound particle dispersion-strengthened metal composite material is sintered. Are manufactured by.
従来の焼結法は、母相の微細金属粉末に金属間化合物
粉末を添加して機械的に攪拌混合を行い、これをプレス
成形し、加熱焼結して金属間化合物粒子分散強化型の複
合材を製造するもので、加熱焼結したものを押出機、圧
延機により目的とする製品を製造している。In the conventional sintering method, the intermetallic compound powder is added to the fine metal powder of the matrix phase, mechanically agitated and mixed, press-molded, and heat-sintered to form an intermetallic compound particle dispersion-strengthened composite. A material is manufactured, and a product obtained by heating and sintering is manufactured with an extruder and a rolling machine.
［発明が解決しようとする問題点］ しかしながら、従来の焼結法では、金属間化合物粉末
と母合金粉末を機械的に攪拌混合するのであるが、マト
リックスである母合金粉末に金属間化合物粉末を均一に
分散混合することは、粒子間の凝集、比重差等の為に困
難であった。[Problems to be Solved by the Invention] However, in the conventional sintering method, the intermetallic compound powder and the mother alloy powder are mechanically stirred and mixed, but the intermetallic compound powder is added to the matrix alloy powder. It was difficult to uniformly disperse and mix the particles because of agglomeration between particles and a difference in specific gravity.
又、プレス成形、加熱焼結に際して酸化を伴なう為
に、加熱焼結する過程で酸化防止手段及び装置が必要で
あり、それ故に、寸法精度の点でも、強度の点でも制約
があり、経費の点でもかなりの問題を有している為、粒
子分散型合金を安価に大量生産することは困難であるな
どの問題点がある。Further, since oxidation is involved in press molding and heat sintering, an oxidation preventing means and device are required in the process of heat sintering, and therefore, there are restrictions in terms of dimensional accuracy and strength. Since it also has a considerable problem in terms of cost, it is difficult to mass-produce the particle-dispersed alloy at low cost.
このため、簡便な方法によって得ることができ、母合
金中に金属間化合物粒子が十分に均一分散していて機械
的特性に優れている金属間化合物粒子分散強化型の金属
複合材が望まれていた。Therefore, there is a demand for an intermetallic compound particle dispersion-strengthened metal composite that can be obtained by a simple method, and that the intermetallic compound particles are sufficiently uniformly dispersed in the master alloy and have excellent mechanical properties. It was
本発明の目的は上記問題点を解消しようとするもので
あり、従来においては金属間化合物粉末を母合金溶湯中
に添加すると溶解してしまう為に直接溶湯中に添加する
ことは不可能とされていたものを、ダイカストマシンを
使用して鋳造する手段を用いることにより、AlNi、Al3N
i、Al3Ni2及びAlNi3のうちより選ばれた１種以上の金属
間化合物粉末を直接Al−3.5〜8.0wt％Ni−3.0〜8.0wt％
Mg合金溶湯中に添加できて短時間の機械的攪拌により溶
解させずに、金属間化合物粒子を均一にマトリックスに
分散させることができ、このことによって、延性を減じ
ることなく、優れた機械的特性を有する金属間化合物粒
子分散強化型ダイカスト複合材が実現できることを見い
だし、本発明を完成した。The object of the present invention is to solve the above problems, and in the past it was considered impossible to add the intermetallic compound powder directly into the molten metal because it would dissolve when added to the mother alloy molten metal. What was used to do so is to cast AlNi and Al 3 N using a die casting machine.
Directly add one or more intermetallic compound powders selected from i, Al 3 Ni 2 and AlNi 3 to Al-3.5 to 8.0 wt% Ni-3.0 to 8.0 wt%
It can be added to the molten Mg alloy and the intermetallic compound particles can be uniformly dispersed in the matrix without being dissolved by mechanical stirring for a short period of time, which allows excellent mechanical properties without reducing ductility. It was found that an intermetallic compound particle dispersion-reinforced die-cast composite material having the above can be realized, and the present invention was completed.
［問題点を解決する為の手段］ 即ち、本発明の金属間化合物粒子分散強化型ダイカス
ト複合材は、Al−3.5〜8.0wt％Ni−3.0〜8.0wt％Mg合金
をマトリックスとし、AlNi、Al3Ni、Al3Ni2及びAlNi3の
うちより選ばれた１種以上の金属間化合物粉末が添加粉
末として分散され、かつ、前記添加粉末の含有量が３〜
50wt％の範囲であることを特徴とする。[Means for Solving Problems] That is, the intermetallic compound particle dispersion-reinforced die-cast composite material of the present invention uses Al-3.5 to 8.0 wt% Ni-3.0 to 8.0 wt% Mg alloy as a matrix, and AlNi, Al One or more kinds of intermetallic compound powders selected from 3 Ni, Al 3 Ni 2 and AlNi 3 are dispersed as an additive powder, and the content of the additive powder is 3 to
It is characterized by being in the range of 50 wt%.
又、本発明の金属間化合物粒子分散強化型ダイカスト
複合材の製造方法は、Al−3.5〜8.0wt％Ni−3.0〜8.0wt
％Mg合金の溶湯中へAlNi、Al3Ni、Al3Ni2及びAlNi3のう
ちより選ばれた１種以上の金属間化合物粉末を３〜50wt
％直接添加し、攪拌混合した後、ダイカスト成形するこ
とにより前記金属間化合物粉末を均一にマトリックスに
分散させることを特徴とする。Further, the method for producing the intermetallic compound particle dispersion strengthened die casting composite material of the present invention is Al-3.5 to 8.0 wt% Ni-3.0 to 8.0 wt.
% To 50% of intermetallic compound powder selected from AlNi, Al 3 Ni, Al 3 Ni 2 and AlNi 3 into the molten alloy of Mg alloy
% Direct addition, stirring and mixing, and die casting to uniformly disperse the intermetallic compound powder in the matrix.
以下に、本発明を更に詳細に説明する。 Hereinafter, the present invention will be described in more detail.
本発明の金属間化合物粒子分散強化型ダイカスト複合
材（以下、ダイカスト複合材とする）におけるマトリッ
クスはAl−3.5〜8.0wt％Ni−3.0〜8.0wt％Mg合金であ
る。The matrix in the intermetallic compound particle dispersion-reinforced die casting composite material (hereinafter referred to as die casting composite material) of the present invention is Al-3.5 to 8.0 wt% Ni-3.0 to 8.0 wt% Mg alloy.
この理由は、低NiのAl−Ni−Mg合金が優れた機械的性
質を持ち、かつ価格的にもマトリックス材として好適で
あるが、Niの含有率が3.5wt％未満では機械的性質が不
十分であり、8.0wt％超では靱性が低下するからであ
る。また、Mgの含有率が3.0wt％未満では強度が落ち、
8.0wt％超では伸びが急激に低下するからである。The reason for this is that a low Ni Al-Ni-Mg alloy has excellent mechanical properties and is suitable as a matrix material in terms of cost, but if the Ni content is less than 3.5 wt%, the mechanical properties are unsatisfactory. This is because it is sufficient, and if it exceeds 8.0 wt%, the toughness decreases. If the Mg content is less than 3.0 wt%, the strength will decrease,
This is because if it exceeds 8.0 wt%, the elongation will drop sharply.
本発明において、前記マトリックスに混入分散させる
添加粉末（以下、分散粒子という）は、AlNi、Al3Ni、A
l3Ni2及びAlNi3のうちより選ばれた１種以上の金属間化
合物粉末である。In the present invention, the additive powder to be mixed and dispersed in the matrix (hereinafter referred to as dispersed particles) is AlNi, Al 3 Ni, A
It is at least one kind of intermetallic compound powder selected from l 3 Ni 2 and AlNi 3 .
この理由は、前記Al−Ni系のマトリックス材とは同系
であるため、第２図のAl−Ni組織状態図に示すように、
濡れ性がよく、しかも安定性に優れているからである。
さらに、下記表１にAl−Ni系金属間化合物の表面硬度
（ビッカース硬さ:Hv）を示すが、いずれも400（Hv）以
上の硬さがあるので、これらの高硬度粒子を母合金マト
リックスに添加することによって、いずれも優れた耐摩
耗性を有する合金を得ることができる。The reason for this is that since it is similar to the above Al-Ni matrix material, as shown in the Al-Ni structure phase diagram of FIG.
This is because it has good wettability and excellent stability.
Furthermore, the surface hardness (Vickers hardness: Hv) of the Al-Ni intermetallic compound is shown in Table 1 below. Since all of them have a hardness of 400 (Hv) or more, these high hardness particles are used as the mother alloy matrix. When added to the alloy, an alloy having excellent wear resistance can be obtained.
このような分散粒子の添加量は３〜50wt％であり、好
ましくは５〜20wt％であり、より好ましくは10〜20wt％
である。その理由は、前記添加量が3wt％未満では耐摩
耗性の向上効果が不十分であり、50wt％超では攪拌段階
で母合金が急激に凝固するために本発明の製造方法によ
り製造することは困難であるからである。 The amount of such dispersed particles added is 3 to 50 wt%, preferably 5 to 20 wt%, more preferably 10 to 20 wt%.
Is. The reason is that if the addition amount is less than 3 wt%, the effect of improving the wear resistance is insufficient, and if it exceeds 50 wt%, the mother alloy rapidly solidifies in the stirring step, so that the production method of the present invention is not possible. Because it is difficult.
また、分散粒子の粒子径は100μｍ以下が好ましく、
より好ましくは50μｍ以下がよい。この理由は、分散粒
子の粒子径が100μｍ超では前記マトリックスへの分散
性が悪く、機械的特性を劣化させるからである。Further, the particle size of the dispersed particles is preferably 100 μm or less,
More preferably, it is 50 μm or less. The reason for this is that if the particle size of the dispersed particles exceeds 100 μm, the dispersibility in the matrix is poor and the mechanical properties are deteriorated.
本発明においては、前記マトリックスへの前記分散粒
子の分散が均一であることにより、延性を失わずに、耐
摩耗性を始めとする機械的特性に優れたダイカスト複合
材となる。In the present invention, since the dispersed particles are uniformly dispersed in the matrix, the die-cast composite material is excellent in mechanical properties such as abrasion resistance without losing ductility.
本発明に係るダイカスト複合材は、基本的には以上の
ように構成されるものであり、以下に、その製造方法を
添付図面を参照しつつ詳細に説明する。The die-cast composite material according to the present invention is basically configured as described above, and the manufacturing method thereof will be described below in detail with reference to the accompanying drawings.
第１図は本発明に係るダイカスト複合材の製造方法に
用いられる攪拌混合装置の一構成例の一部断面図であ
る。FIG. 1 is a partial cross-sectional view of one structural example of a stirring and mixing apparatus used in the method for producing a die-cast composite material according to the present invention.
まず、マトリックス材となるAl−Ni−Mg系合金（母合
金）溶湯を攪拌混合装置の攪拌混合槽２内に所定量注湯
した後、この溶湯に前記分散粒子を所定量投入添加し、
攪拌羽根３をモーター４で回転させ、短時間攪拌混合
し、分散粒子混合合金溶湯１を得ることができる。First, after pouring a predetermined amount of Al-Ni-Mg alloy (mother alloy) melt serving as a matrix material into the stirring / mixing tank 2 of the stirring / mixing device, a predetermined amount of the dispersed particles is added and added to the melt,
The dispersion blade mixed alloy melt 1 can be obtained by rotating the stirring blade 3 with the motor 4 and stirring and mixing for a short time.
Al−Ni系合金溶湯の温度は第２図に示すように、640
〜800℃が好ましく、より好ましくは660〜780℃がよ
く、特に670〜730℃が好ましい。この理由は、640℃未
満では前記Al−Ni合金が溶融融解せず、800℃超では前
記分散粒子の溶解が早すぎるためである。As shown in Fig. 2, the temperature of the molten Al-Ni alloy is 640
To 800 ° C is preferable, 660 to 780 ° C is more preferable, and 670 to 730 ° C is particularly preferable. This is because the Al-Ni alloy does not melt and melt below 640 ° C and the dispersed particles melt too quickly above 800 ° C.
攪拌混合に要する時間は前記分散粒子の凝集が起こら
ず、かつ、前記分散粒子が溶解せず、後述するダイカス
トマシンによって前記分散粒子が前記マトリックスに均
一に分散させることができる程度に攪拌混合できる時間
であればよく、５分以下が好ましい。より好ましくは５
〜60秒がよく、特に好ましくは８〜15秒である。この理
由は、５分超では前記分散粒子が溶解してしまい、マト
リックスの母合金と一体となってしまい、耐摩耗性の向
上が見られないからである。The time required for stirring and mixing does not cause aggregation of the dispersed particles, and the dispersed particles do not dissolve, and the time for stirring and mixing to such an extent that the dispersed particles can be uniformly dispersed in the matrix by a die casting machine described later. It is sufficient that it is 5 minutes or less. More preferably 5
The time is preferably up to 60 seconds, particularly preferably 8 to 15 seconds. The reason for this is that if it exceeds 5 minutes, the dispersed particles will dissolve and become integrated with the mother alloy of the matrix, and no improvement in wear resistance will be seen.
攪拌混合後、前記分散粒子混合溶湯１はダイカストマ
シンに給湯され、所望の形状に形成される。この時、該
ダイカストマシン内においても前記分散粒子は前記マト
リックス内に分散し、さらに均一化される。After stirring and mixing, the molten metal 1 containing the dispersed particles is supplied to a die casting machine and formed into a desired shape. At this time, the dispersed particles are dispersed in the matrix even in the die casting machine, and are further homogenized.
このようにして、前記分散粒子が均一に前記マトリッ
クスに分散した耐摩耗性及び延性などの機械的特性に優
れた本発明の金属化合物粒子分散強化型ダイカスト複合
材が製造される。従って、従来の焼結粉末冶金法のよう
にコスト高な表面処理や酸化防止手段及び装置を必要と
せず、複雑な形状の製品も容易にかつ安価に製造でき
る。In this manner, the metal compound particle dispersion-reinforced die-cast composite material of the present invention having excellent mechanical properties such as abrasion resistance and ductility, in which the dispersed particles are uniformly dispersed in the matrix, is manufactured. Therefore, unlike the conventional sintered powder metallurgy method, a costly surface treatment and an oxidation preventing means and device are not required, and a product having a complicated shape can be easily manufactured at low cost.
［実施例］ 以下に、本発明を実施例に基づき具体的に説明する。[Examples] Hereinafter, the present invention will be specifically described based on Examples.
実施例１ マトリックス（母合金）であるAl−6wt％Ni−5wt％Mg
溶湯中に平均粒子径が44μｍのAlNi、Al3Ni2、Al3Ni、A
lNi3の各金属間化合物粉末を10wt％添加し、第１図に示
す攪拌混合装置により添加攪拌混合後、金型にダイカス
トマシンで注湯し、本発明の金属間化合物粒子分散強化
型ダイカスト複合材の試験片を得た。また、Ni粉末を10
wt％添加して、同様の試験片を得た。Example 1 Matrix (mother alloy) Al-6wt% Ni-5wt% Mg
AlNi, Al 3 Ni 2 , Al 3 Ni, A with an average particle size of 44 μm in the melt
10 wt% of each intermetallic compound powder of lNi 3 was added, and the mixture was added and stirred by the stirring and mixing device shown in FIG. 1, and then poured into a mold by a die casting machine, and the intermetallic compound particle dispersion-reinforced die casting composite of the present invention was added. A test piece of wood was obtained. In addition, Ni powder 10
wt% was added to obtain a similar test piece.
添加前のAlNi金属間化合物粉末の顕微鏡写真を第3a図
に示す。また、この第3a図に示すAlNi金属間化合物を添
加した時の金型の先端部及び湯口部で得られた試験片の
拡大倍率50倍の顕微鏡写真をそれぞれ第3b図及び第3c図
に示す。さらに、分散粒子としてNi粉末、Al3Ni2、Al3N
i及びAlNi3金属間化合物粉末を用いた場合の試験片の拡
大倍率50倍の顕微鏡写真をそれぞれ第3d図、第3e図、第
3f図及び第3g図に示す。A micrograph of AlNi intermetallic compound powder before addition is shown in Fig. 3a. In addition, micrographs at a magnification of 50 of the test piece obtained at the tip and the sprue of the mold when the AlNi intermetallic compound shown in FIG. 3a is added are shown in FIGS. 3b and 3c, respectively. . Furthermore, Ni powder, Al 3 Ni 2 , Al 3 N as dispersed particles
i and AlNi 3 intermetallic compound powder using a micrograph of the test piece at a magnification of 50 times, respectively, as shown in Fig. 3d, Fig. 3e, and Fig. 3e.
Shown in Figures 3f and 3g.
第3b図、第3c図、第3e図、第3f図及び第3g図から明ら
かなように、AlNi、Al3Ni2、Al3Ni、AlNi3の金属間化合
物粒子が母合金に均一に分散していることがわかる。ま
た、第3d図に示されるように、Ni粒子も同様に母合金に
分散している。As is clear from FIG. 3b, FIG. 3c, FIG. 3e, FIG. 3f, and FIG. 3g, the intermetallic compound particles of AlNi, Al 3 Ni 2 , Al 3 Ni, and AlNi 3 are uniformly dispersed in the master alloy. You can see that Further, as shown in FIG. 3d, Ni particles are also dispersed in the master alloy.
さらに、第3a図と第3b図及び第3c図を比較して、AlNi
金属間化合物は母合金中で少し溶解するけれども、均一
に完全に分散したまま残存していることがわかる。In addition, comparing Figures 3a and 3b and 3c,
It can be seen that although the intermetallic compound is slightly dissolved in the master alloy, it remains uniformly dispersed completely.
すなわち、Al−Ni、Al3Ni2、Al3Ni、AlNi3金属間化合
物粒子は、いずれも前記表１に示すように極めて高硬度
であり、Al−Ni合金マトリックスとの結合力、又濡れ生
が非常に優れていてしかも安定性があるため混合が容易
であり、また、均一な分散が可能であることがわかる。 That, AlNi, Al 3 Ni 2, Al 3 Ni, AlNi 3 intermetallic particles are both extremely high hardness as shown in Table 1, binding force between the AlNi alloy matrix, also wetting It can be seen that the raw material is very excellent and is stable, so that mixing is easy, and that uniform dispersion is possible.
この結果、本発明によれば、母合金であるAl−Ni−Mg
合金の優れた機械的性質を失うことなく、優れた耐摩耗
性を有する金属間化合物粒子分散強化型ダイカスト複合
材を得ることができることがわかる。As a result, according to the present invention, the mother alloy Al-Ni-Mg
It can be seen that it is possible to obtain an intermetallic compound particle dispersion-reinforced die casting composite material having excellent wear resistance without losing the excellent mechanical properties of the alloy.
実施例２ 前述の金属間化合物粉末を母合金溶湯中に投入添加し
て攪拌混合後、ダイカストマシンに給湯して、各種の金
属複合材の引張試験用試験片及び摩耗試験片を鋳造し
た。Example 2 The above-mentioned intermetallic compound powder was added to the melt of the master alloy, and the mixture was stirred and mixed, and then heated in a die casting machine to cast tensile test pieces and wear test pieces of various metal composite materials.
ここで、本発明としては、母合金としてAl−6wt％Ni
−5wt％Mg合金を用い、分散粒子としてAlNi金属間化合
物粉末を用いた。また、分散粒子の含有量は、それぞれ
３、５、７、10、20、30、40、50wt％とした。Here, in the present invention, as a master alloy, Al-6 wt% Ni
A −5 wt% Mg alloy was used, and AlNi intermetallic compound powder was used as the dispersed particles. The content of dispersed particles was 3, 5, 7, 10, 20, 30, 40, and 50 wt%, respectively.
比較例としては、分散粒子を含有しない母合金のみの
Al−6wt％Ni−5wt％Mg合金、この母合金に分散粒子とし
てNi粉末を投入添加（含有量３、５、７、10、20、30、
40wt％）した複合材、この母合金に分散粒子としてAlNi
金属間化合物粉末を2wt％含有した複合材、390、5wt％S
i3N4/ADC10複合材を用いた。As a comparative example, only the master alloy containing no dispersed particles was used.
Al-6 wt% Ni-5 wt% Mg alloy, Ni powder was added as dispersed particles to this mother alloy (content 3, 5, 7, 10, 20, 30,
40 wt%) composite material, AlNi as dispersed particles in this master alloy
Composite material containing 2 wt% of intermetallic compound powder, 390, 5 wt% S
An i 3 N 4 / ADC10 composite material was used.
なお、本発明及び比較例に用いられているAl系母合金
の化学成分を下記表２に示す。The chemical components of the Al-based master alloys used in the present invention and comparative examples are shown in Table 2 below.
得られたこれらの試験片について以下に示すそれぞれ
の試験を行った。 Each of the following tests was performed on the obtained test pieces.
尚、摩耗試験は大越式摩耗試験装置により相手材とし
てFC25の標準回転円板材料を用いて、無潤滑条件下で最
終荷重2.1kg、滑り距離100mを一定とし、滑り速度を0.9
4、1.96、2.86、4.36m/sの４段に変化させて行い、摩耗
痕幅より比摩耗量を測定した。In the wear test, the standard rotating disk material of FC25 was used as the mating material with the Ogoshi-type wear tester, the final load was 2.1 kg, the sliding distance was 100 m, and the sliding speed was 0.9 m under non-lubricated conditions.
The measurement was carried out by changing to four steps of 4, 1.96, 2.86, and 4.36 m / s, and the specific wear amount was measured from the wear scar width.
この試験結果を下記表３及び表４、ならびに第４図、
第５図、第６図、第７図に示す。The test results are shown in Tables 3 and 4 below, and FIG.
It is shown in FIGS. 5, 6 and 7.
表３には、マトリックスとしてAl−6wt％Ni−5wt％Mg
合金を用いた本発明例及び比較例の結果を示す。さら
に、第４図は、表３に示される結果のうち、比較例と本
発明例による金属複合材のうち分散粒子の含有率が３、
５、７、10wt％の場合とについて、横軸を滑り速度、縦
軸を比摩耗量としてプロットしたグラフであ、また、第
５図は、表３に示される結果のうち、比較例と本発明例
による金属複合材のうち分散粒子の含有率が15、20、3
0、40wt％の場合との同様のグラフである。さらに、第
６図及び第７図は、分散粒子としてNi粉末を用いた比較
例についての同様のグラフである。Table 3 shows Al-6wt% Ni-5wt% Mg as matrix.
The result of this invention example and a comparative example using an alloy is shown. Further, FIG. 4 shows that among the results shown in Table 3, the content of dispersed particles in the metal composite materials according to the comparative example and the example of the present invention is 3,
FIG. 5 is a graph in which the horizontal axis represents the sliding speed and the vertical axis represents the specific wear amount for the cases of 5, 7, and 10 wt%, and FIG. The content of dispersed particles in the metal composite material according to the invention is 15, 20, 3
It is a graph similar to the case of 0 and 40 wt%. Furthermore, FIGS. 6 and 7 are similar graphs for a comparative example using Ni powder as the dispersed particles.
なお、50wt％の場合は40wt％の場合と同じ比摩耗量と
なったので、第５図及び表３への記載は省略した。The case of 50 wt% had the same specific wear amount as the case of 40 wt%, so the description in FIG. 5 and Table 3 was omitted.
第３及び第４図より、５、７、10wt％のAlNi金属間化
合物を分散粒子とする本発明の金属間化合物粒子分散強
化型ダイカスト複合材は、ほぼ同じ耐摩耗性を有し、比
較例である母合金のみのAl−6wt％Ni−5wt％Mg合金より
優れた耐摩耗性を示すことがわかる。又、3wt％のAlNi
金属間化合物粒子分散強化型ダイカスト複合材も比較例
である前記Al−6wt％Ni−5wt％Mg合金より高い耐摩耗性
を有し、滑り速度2.86m/s、4.36m/sにおいては、ほぼ他
の5wt％以上の金属複合材と同様の比摩耗量を示すこと
がわかる。 From FIGS. 3 and 4, the intermetallic compound particle dispersion-reinforced die-casting composite material of the present invention, in which 5, 7, 10 wt% AlNi intermetallic compound is used as the dispersed particles, has almost the same wear resistance. It can be seen that the wear resistance is superior to that of the Al-6 wt% Ni-5 wt% Mg alloy having only the mother alloy. Also, 3 wt% AlNi
The intermetallic compound particle dispersion-strengthened die-cast composite material also has higher wear resistance than the Al-6 wt% Ni-5 wt% Mg alloy which is a comparative example, and at a sliding speed of 2.86 m / s, 4.36 m / s, it is almost the same. It can be seen that it exhibits the same specific wear amount as other metal composite materials of 5 wt% or more.
なお、分散粒子の量が3wt％未満の2wt％AlNi/Al−6wt
％Ni−5wt％Mgほぼ母合金と同様の比摩耗量を示し、、A
lNi粒子を添加したことによる、耐摩耗性の向上効果は
ない。The amount of dispersed particles is less than 3 wt% 2 wt% AlNi / Al-6 wt
% Ni-5wt% Mg The specific wear amount is almost the same as that of the mother alloy.
The addition of lNi particles has no effect of improving wear resistance.
また、表３及び第５図より、15、20、30、40、50wt％
のAlNi金属間化合物を分散粒子とする本発明の金属間化
合物粒子分散強化型ダイカスト複合材はほぼ同じ比摩耗
量を示し、いずれも母合金のみのAl−6wt％Ni−5wt％Mg
合金より、耐摩耗性に優れていることがわかる。50wt％
のAlNi金属間化合物を含有する金属間化合物粒子分散強
化型ダイカスト複合材は40wt％のAlNi金属間化合物を含
有する金属間化合物粒子分散強化型ダイカスト複合材と
同じ耐摩耗性を有するが、50wt％超の分散粒子を添加す
ると、攪拌段階で母合金が急激に凝固するために本発明
の製造方法で製造することは困難である。Moreover, from Table 3 and FIG. 5, 15, 20, 30, 40, 50 wt%
AlNi intermetallic compound of the present invention dispersion-type die-cast composite material of intermetallic compound particles of the present invention shows almost the same specific wear amount, both Al-6 wt% Ni-5 wt% Mg of the master alloy only
It can be seen that the alloy has better wear resistance than the alloy. 50wt%
The intermetallic compound particle dispersion strengthened die casting composite material containing AlNi intermetallic compound has the same wear resistance as the intermetallic compound particle dispersion strengthened die casting composite material containing 40 wt% AlNi intermetallic compound, but 50 wt% When the super-dispersed particles are added, the mother alloy rapidly solidifies in the stirring stage, and thus it is difficult to manufacture the mother alloy by the manufacturing method of the present invention.
さらに、前述のように、分散粒子としてNi粉末を用い
た場合にも、マトリックス中にNi粒子が溶解せずに分散
している複合材を得ることはできるが、表３、第６図及
び第７図に示される結果より明らかなように、同量のAl
Ni金属間化合物を含有する本発明の複合材に比して、そ
の耐摩耗性は低い。Further, as described above, even when Ni powder is used as the dispersed particles, it is possible to obtain the composite material in which the Ni particles are dispersed in the matrix without being dissolved, but Table 3, FIG. As is clear from the results shown in Fig. 7, the same amount of Al
Its wear resistance is lower than that of the composite material of the present invention containing the Ni intermetallic compound.
更に、表４に前記実施例における本発明の金属間化合
物粒子分散強化型ダイカスト複合材、及び同様に作製し
た従来の複合材３種の機械的性質を示す。Further, Table 4 shows the mechanical properties of the intermetallic compound particle dispersion-reinforced die-cast composite material of the present invention in the above-mentioned Examples and three kinds of conventional composite materials prepared in the same manner.
本発明の延性は、同種のSi3N4あるいはSiC粒子分散強
化型合金の伸びがわずか0.7％であるに対して、3.6〜５
％と極めて優れていることがわかる。 The ductility of the present invention is 3.6 to 5 in comparison with the elongation of only 0.7% of the same type of Si 3 N 4 or SiC particle dispersion strengthened alloy.
It turns out that it is extremely excellent at%.
［発明の効果］ 以上に説明したように、本発明の金属間化合物粒子分
散強化型ダイカスト複合材においては、Al−Ni系金属間
化合物粉末が母合金マトリックス中に均一に分散してい
ることによって耐摩耗性及び延性が向上しており、優れ
た機械的特性を発現できる金属間化合物粒子分散強化型
ダイカスト複合材を実現できる。[Effects of the Invention] As described above, in the intermetallic compound particle dispersion-reinforced die casting composite material of the present invention, the Al-Ni-based intermetallic compound powder is uniformly dispersed in the master alloy matrix. It is possible to realize an intermetallic compound particle dispersion-reinforced die casting composite material which has improved wear resistance and ductility and can exhibit excellent mechanical properties.
又、本発明の製造方法によれば、Al−Ni系金属間化合
物を上記母合金溶湯中に添加し、短時間の機械的攪拌混
合後、直接ダイカストマシンによって均一にマトリック
スに分散させるように構成したので、凝集等の問題が起
こることなく均一に分散できて、優れた耐摩耗性及び延
性を有する粒子分散強化型複合材が得られる。Further, according to the production method of the present invention, the Al-Ni-based intermetallic compound is added to the melt of the mother alloy, and after mechanical stirring and mixing for a short time, it is directly dispersed in the matrix by a die casting machine. As a result, a particle dispersion-reinforced composite material that can be uniformly dispersed without causing problems such as aggregation and has excellent wear resistance and ductility can be obtained.
さらに、本発明の製造方法によれば、ダイカスト鋳造
法を利用するので、従来の焼結、粉末冶金法のように、
コスト高な表面処理方や酸化防止手段及び装置を必要と
しないので、従来法と比較して加工費を低減でき、又複
雑な形状の製品を容易に製造でき、多くの工程を省略化
できるので安価に金属間化合物粒子分散強化型ダイカス
ト複合材を大量生産することができる効果を有する。Furthermore, according to the manufacturing method of the present invention, since the die casting method is used, like the conventional sintering and powder metallurgy methods,
Since it does not require costly surface treatment methods and oxidation prevention means and equipment, processing costs can be reduced compared to conventional methods, and products with complicated shapes can be easily manufactured, and many steps can be omitted. It has the effect that it is possible to mass-produce the intermetallic compound particle dispersion-reinforced die casting composite material at low cost.
第１図は、本発明に係る金属間化合物粒子分散強化型ダ
イカスト複合材の製造に用いられる攪拌混合装置の一構
成例の一部断面図である。 第２図はAl−Ni平衡状態図である。 第3a図は「粒子構造」を、第3b図、第3c図、第3d図、第
3e図、第3f図及び第3g図はいずれも「金属組織」を示す
図面代用写真であり、第3a図はAl−Ni金属間化合物粉末
の顕微鏡写真（50倍）、第3b図及び第3c図はそれぞれ金
型先端部及び湯口部において得られた本発明に係るAl−
Ni金属間化合物粒子分散強化型ダイカスト複合材の顕微
鏡写真（50倍）、第3d図はNi粒子分散強化型合金の顕微
鏡写真（50倍）、第3e図、第3f図及び第3g図は、それぞ
れ本発明に係るAl3Ni2、Al3Ni及びAlNi3金属間化合物粒
子分散強化型金属複合材の顕微鏡写真（50倍）である。 第４図、第５図、第６図及び第７図は、それぞれ各種の
試験片のFC25相手材に対する滑り速度と比摩耗量との関
係を示した各グラフである。 符号の説明 １……分散粒子混合合金溶湯（ダイカスト複合材）、２
……攪拌混合槽、３……攪拌羽根、４……モータFIG. 1 is a partial cross-sectional view of a configuration example of a stirring and mixing apparatus used for producing the intermetallic compound particle dispersion-reinforced die casting composite material according to the present invention. FIG. 2 is an Al-Ni equilibrium phase diagram. FIG. 3a shows the “particle structure”, FIG. 3b, FIG. 3c, FIG. 3d, FIG.
Figures 3e, 3f and 3g are all drawings-substituting photographs showing the "metallographic structure", and Figure 3a is a micrograph of Al-Ni intermetallic compound powder (50 times), Figures 3b and 3c. The figures show Al- according to the present invention obtained at the die tip and the sprue, respectively.
Ni intermetallic compound particle dispersion strengthened die-cast composite material micrograph (50 times), Figure 3d is a Ni particle dispersion strengthened alloy micrograph (50 times), Figures 3e, 3f and 3g are 3 is micrographs (50 times) of Al 3 Ni 2 , Al 3 Ni and AlNi 3 intermetallic compound particle dispersion strengthened metal composite materials according to the present invention. FIG. 4, FIG. 5, FIG. 6 and FIG. 7 are graphs showing the relationship between the sliding speed and the specific wear amount of various test pieces with respect to the FC25 mating material. Explanation of symbols 1 ... Molten alloy with dispersed particles (die-cast composite material), 2
…… Stirring / mixing tank, 3 …… Stirring blade, 4 …… Motor
Claims (2)
をマトリックスとし、AlNi、Al3Ni、Al3Ni2及びAlNi3の
うちより選ばれた１種以上の金属間化合物粉末が添加粉
末として分散され、かつ、前記添加粉末の含有量が３〜
50wt％の範囲であることを特徴とする金属間化合物粒子
分散強化型ダイカスト複合材。1. An Al-3.5 to 8.0 wt% Ni-3.0 to 8.0 wt% Mg alloy is used as a matrix, and one or more metals selected from AlNi, Al 3 Ni, Al 3 Ni 2 and AlNi 3 are used. The compound powder is dispersed as an additive powder, and the content of the additive powder is 3 to
An intermetallic compound particle dispersion strengthened die casting composite material characterized by being in a range of 50 wt%.
の溶湯中へAlNi、Al3Ni、Al3Ni2及びAlNi3のうちより選
ばれた１種以上の金属間化合物粉末を３〜50wt％直接添
加し、攪拌混合した後、ダイカスト成形することにより
前記金属間化合物粉末を均一にマトリックスに分散させ
ることを特徴とする金属間化合物粒子分散強化型ダイカ
スト複合材の製造方法。2. Between one or more metals selected from AlNi, Al 3 Ni, Al 3 Ni 2 and AlNi 3 in a molten alloy of Al-3.5 to 8.0 wt% Ni-3.0 to 8.0 wt% Mg alloy. Manufacture of intermetallic compound particle dispersion-reinforced die-cast composite material characterized in that 3-50 wt% of compound powder is directly added, stirred and mixed, and then the intermetallic compound powder is uniformly dispersed in a matrix by die casting. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/103,125 US4906531A (en) | 1986-10-01 | 1987-09-30 | Alloys strengthened by dispersion of particles of a metal and an intermetallic compound and a process for producing such alloys |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23540186 | 1986-10-01 | ||
| JP61-235401 | 1986-10-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63227736A JPS63227736A (en) | 1988-09-22 |
| JP2554066B2 true JP2554066B2 (en) | 1996-11-13 |
Family
ID=16985544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61313715A Expired - Lifetime JP2554066B2 (en) | 1986-10-01 | 1986-12-26 | Intermetallic compound particle dispersion-reinforced die-cast composite material and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2554066B2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106884100B (en) * | 2015-12-16 | 2019-02-26 | 湖南科技大学 | A kind of preparation method of nickel-aluminum-based complex phase alloy |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6018262A (en) * | 1983-07-12 | 1985-01-30 | Nippon Denso Co Ltd | Method and device for die casting |
| JPH0623416B2 (en) * | 1985-01-12 | 1994-03-30 | 住友電気工業株式会社 | Abrasion resistant aluminum composite material and method for producing the same |
| JPH0623417B2 (en) * | 1985-01-12 | 1994-03-30 | 住友電気工業株式会社 | Method for producing wear resistant aluminum composite material |
| JPH0320453A (en) * | 1989-06-16 | 1991-01-29 | Nissan Motor Co Ltd | Carburization control material and device for sticking this material |
-
1986
- 1986-12-26 JP JP61313715A patent/JP2554066B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63227736A (en) | 1988-09-22 |
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