JPH0627294B2 - Method for producing Al-Cu-TiC alloy composite material - Google Patents
Method for producing Al-Cu-TiC alloy composite materialInfo
- Publication number
- JPH0627294B2 JPH0627294B2 JP62049777A JP4977787A JPH0627294B2 JP H0627294 B2 JPH0627294 B2 JP H0627294B2 JP 62049777 A JP62049777 A JP 62049777A JP 4977787 A JP4977787 A JP 4977787A JP H0627294 B2 JPH0627294 B2 JP H0627294B2
- Authority
- JP
- Japan
- Prior art keywords
- tic
- alloy
- composite material
- rotor
- particles
- 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
- 229910045601 alloy Inorganic materials 0.000 title claims description 47
- 239000000956 alloy Substances 0.000 title claims description 47
- 239000002131 composite material Substances 0.000 title claims description 20
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000002245 particle Substances 0.000 claims description 32
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 12
- 239000013078 crystal Substances 0.000 claims description 12
- 229910018182 Al—Cu Inorganic materials 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 239000011888 foil Substances 0.000 claims description 8
- 238000007711 solidification Methods 0.000 claims description 8
- 230000008023 solidification Effects 0.000 claims description 8
- 239000006185 dispersion Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 description 13
- 239000011159 matrix material Substances 0.000 description 10
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000013528 metallic particle Substances 0.000 description 3
- 238000001000 micrograph Methods 0.000 description 3
- 238000004663 powder metallurgy Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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、Al-Cu-TiC 合金複合材料の製造方法に関する
ものであり、さらに詳しくは、Al-Cu 合金の球状結晶の
間隙にTiC 粒子を均一に分散させ、均質微細な組織をも
たせた粒子分散強化型の合金複合材料を製造する方法に
関するものである。Description: TECHNICAL FIELD The present invention relates to a method for producing an Al—Cu—TiC alloy composite material, more specifically, TiC particles in the interstices of spherical crystals of an Al—Cu alloy. The present invention relates to a method for producing a particle dispersion-strengthened alloy composite material in which is uniformly dispersed to have a uniform fine structure.
［従来の技術］ Al-Cu-TiC 合金複合材料は、それが高強度、軽量で、耐
熱性を有していることから、航空機材料や自動車材料等
として有効に利用できるものである。[Prior Art] An Al-Cu-TiC alloy composite material can be effectively used as an aircraft material, an automobile material, etc. because it has high strength, light weight, and heat resistance.
従来、溶製法によって、Al-Cu 等のマトリックス合金中
に、TiC のような非金属粒子で比重差を異にするものを
均質に分散させ、それによってAl-Cu-TiC 合金複合材料
等を製造する場合に利用できる方法としては、コンポキ
ャスト法がある。Conventionally, by the melting method, non-metallic particles such as TiC having different specific gravity differences are homogeneously dispersed in a matrix alloy such as Al-Cu, thereby producing Al-Cu-TiC alloy composite materials. The method that can be used when doing so is the compocast method.
このコンポキャスト法では、回転子を1000 rpm以下の回
転速度で回転させる回転攪拌凝固中に非金属粒子等を添
加するが、この方法による場合には、所要の条件、即
ち、 (1) 添加粒子とマトリックス合金との比重差が小さい。In this compocast method, the non-metallic particles and the like are added during rotational stirring and solidification in which the rotor is rotated at a rotational speed of 1000 rpm or less, but in the case of this method, the required conditions, that is, (1) added particles The difference in specific gravity between the matrix alloy and the matrix alloy is small.
(2) 添加粒子とマトリックス合金とのぬれ性が良好であ
る。(2) The wettability between the additive particles and the matrix alloy is good.
(3) 添加粒子が球状である。(3) The added particles are spherical.
などの条件を満足する場合でなければ均一混合を行うこ
とができない。また完全な溶湯状態では、上記添加粒子
は、それにニッケルや銅のコーティングを施すことによ
りぬれ性を改善しなければ、溶湯の表面にはじき出され
るため、混合すら望むことはできない。Uniform mixing cannot be performed unless the conditions such as the above are satisfied. In addition, in a completely molten state, the above-mentioned added particles cannot be even mixed because they are extruded onto the surface of the molten metal unless the wettability is improved by coating the particles with nickel or copper.
一方、上記Al-Cu-TiC 合金複合材料は、粉末冶金法によ
っても得ることができ、上記溶製法に比して、かなり均
質微細な結晶粒をもった緻密なミクロ組織を得ることが
できる。これに対し、溶製法は低コストではあるが、組
織が粗く、材料に偏析が起こる可能性があり、これをで
きるだけ緻密で均質にし、粉末冶金法による場合に近い
組織にすることが望まれている。On the other hand, the Al-Cu-TiC alloy composite material can also be obtained by the powder metallurgy method, and a dense microstructure having considerably uniform fine crystal grains can be obtained as compared with the melting method. On the other hand, although the melting method is low cost, the structure is coarse and segregation may occur in the material, and it is desirable to make it as dense and homogeneous as possible and to have a structure similar to that by the powder metallurgy method. There is.
［発明が解決しようとする課題］ 本発明は、 Al-Cu合金のようなマトリックス合金とTiC
のような非金属粒子とからなる比重差の大きい複合系で
も、鋳塊全体の結晶を微細化すると同時に均質に混合で
きるようにし、それによって Al-Cu合金の微細な結晶粒
の間隙にTiC 粒子を均一に分散させた粒子分散強化型の
合金複合材料を製造可能にするものである。[Problems to be Solved by the Invention] The present invention relates to a matrix alloy such as an Al-Cu alloy and TiC.
Even in a composite system with a large difference in specific gravity, such as non-metallic particles, the crystals of the entire ingot can be refined and homogeneously mixed at the same time, so that TiC particles can be formed in the gaps between the fine crystal grains of the Al-Cu alloy. The present invention makes it possible to produce a particle dispersion strengthened alloy composite material in which is uniformly dispersed.
［課題を解決するための手段、作用］ 上記課題を解決するための本発明のAl-Cu-TiC 合金複合
材料の製造方法は、溶解した Al-Cu合金中に、冷却室に
おいてアルミ箔でくるんだTiC 粒子を添加して、溶湯中
に挿入した回転子を低速回転させることにより、上記Ti
C 粒子を分散させ、冷却を継続しながら、凝固開始と同
時に回転子を高速回転させて、生成した球状結晶を微細
化しながら結晶粒間隙にTiC 粒子を均一に分散させ、均
質微細な組織をもつ粒子分散強化型の合金複合材料を得
ることを特徴とするものである。[Means and Actions for Solving the Problem] The method for producing an Al-Cu-TiC alloy composite material of the present invention for solving the above-mentioned problems is such that a molten Al-Cu alloy is wrapped with aluminum foil in a cooling chamber. By adding TiC particles and rotating the rotor inserted in the molten metal at low speed,
While the C particles are dispersed and the cooling is continued, the rotor is rotated at a high speed at the same time as the solidification is started, and the spherical crystals produced are refined to uniformly disperse the TiC particles in the interstices between the crystal grains, resulting in a uniform fine structure. The present invention is characterized in that a particle dispersion strengthened alloy composite material is obtained.
本発明の方法についてさらに具体的に説明すると、ま
ず、マトリックス合金としての Al-Cu合金は、真空容器
内において加熱炉により溶解し、この溶解した Al-Cu合
金を冷却室に移し、冷却室においてその合金に対しアル
ミ箔にくるんだ状態のTiC 粒子を添加する。TiC 粒子
は、Al-Cu 合金を回転攪拌する回転子にアルミ箔にくる
んで固定した状態で溶湯へ挿入するのが好ましく、これ
によってにアルミ箔が溶融する直前に TiC粒子を溶湯中
まで押し込むことができる。More specifically explaining the method of the present invention, first, Al-Cu alloy as a matrix alloy is melted by a heating furnace in a vacuum container, the molten Al-Cu alloy is transferred to a cooling chamber, in the cooling chamber Add TiC particles wrapped in aluminum foil to the alloy. TiC particles are preferably inserted into the molten metal in a state of being wrapped and fixed in an aluminum foil on a rotor that agitates the Al-Cu alloy, so that the TiC particles are pushed into the molten metal immediately before the aluminum foil is melted. You can
回転子は、溶湯への挿入後に直ちに低速回転させるが、
これによりAl-Cu 合金の溶湯内にTiC 粒子を均一に分散
させることができる。The rotor spins at low speed immediately after being inserted into the melt,
As a result, TiC particles can be uniformly dispersed in the molten Al-Cu alloy.
一般に、溶湯中への金属以外の強化成分の添加は、その
添加成分を湯面上に注入するのが通例であるが、上記 A
l-Cu合金の溶湯内へTiC 粒子を添加する場合には、TiC
粒子のぬれ性がよくないため、湯面上に注入すると、そ
れが溶湯と分離した状態になる。しかるに、上述したよ
うにTiC 粒子をにアルミ箔にくるんだ状態で溶湯中に押
し込むと、TiC 粒子の酸化も少なく、多少溶湯とTiC 粒
子とが分離する傾向があっても、直ちに回転子を回転さ
せるので、極めて能率的にTiC 粒子を均一に分散させる
ことができる。Generally, when adding a reinforcing component other than metal to the molten metal, it is customary to inject the additive component onto the molten metal surface.
When adding TiC particles into the melt of l-Cu alloy, TiC
Since the particles do not have good wettability, when they are poured onto the surface of the molten metal, they become separated from the molten metal. However, as described above, when the TiC particles are wrapped in aluminum foil and pushed into the molten metal, the TiC particles are less oxidized and the rotor is immediately rotated even if the molten metal and TiC particles tend to separate. As a result, the TiC particles can be uniformly dispersed very efficiently.
このように、溶湯中において回転子を低速回転させなが
ら溶湯の冷却を継続すると、間もなく溶湯は多数の核生
成をして凝固を開始するが、この凝固開始と同時に回転
子を高速回転させ、生成した球状結晶を微細化しながら
結晶粒間隙にTiC 粒子を均一に分散させ、凝固後半から
凝固終了直前までの間に回転子をるつぼから取り出す。
その結果、均質な粒子分散強化型の合金複合材料を得る
ことができる。In this way, when cooling the molten metal while continuing to rotate the rotor at a low speed in the molten metal, the molten metal will soon start to nucleate a large number and solidify. TiC particles are uniformly dispersed in the crystal grain spaces while refining the spherical crystals, and the rotor is taken out of the crucible during the latter half of solidification and immediately before the end of solidification.
As a result, a homogeneous particle dispersion strengthened alloy composite material can be obtained.
マトリックス合金としての Al-Cu合金には、必要に応じ
て、その溶融に際し予め微量の結晶粒微細化材を添加し
ておくことができる。この結晶粒微細化材としては、例
えば、ほぼ５：１の重量比をもつTiとB 、あるいは、T
a,Nb,Zrなどがある。これらの結晶粒微細化材は、マト
リックス合金の粒結晶を微細化して、TiC 粒子を均一に
分散させ易い状態にするものである。If necessary, a trace amount of grain refiner may be added to the Al-Cu alloy as the matrix alloy before melting. As the grain refiner, for example, Ti and B having a weight ratio of about 5: 1 or T
a, Nb, Zr, etc. These crystal grain refining materials refine the grain crystals of the matrix alloy so that the TiC particles can be easily dispersed uniformly.
次に、図面を参照して本発明のAl-Cu-TiC 合金複合材料
の製造方法を実施する装置例について説明する。Next, an example of an apparatus for carrying out the method for producing an Al-Cu-TiC alloy composite material of the present invention will be described with reference to the drawings.
第１図は、上記合金複合材料を製造する装置の一例を示
すもので、両面に開閉扉を持つチャンバ本体1 は真空容
器を構成し、その内部をエアシリンダ3 で開閉される耐
熱性のシャッタ2 により上下に区画して、下方の加熱室
4 内に抵抗加熱炉5 を配置すると共に、上方の冷却室6
内に、冷却コイル8 を持つ水冷外筒7 及びその冷却外筒
7 内に上方から垂下した第２図に示すような断面形状の
回転子9 を配置し、この回転子9 をトルクモータ10で回
転駆動するようにしたものである。FIG. 1 shows an example of an apparatus for producing the above alloy composite material. A chamber body 1 having opening and closing doors on both sides constitutes a vacuum container, and a heat-resistant shutter that is opened and closed by an air cylinder 3 inside. The upper and lower heating chambers are divided by 2
The resistance heating furnace 5 is placed inside the
A water-cooled outer cylinder 7 with a cooling coil 8 and its cooling outer cylinder
A rotor 9 having a cross-sectional shape as shown in FIG. 2 hanging from above is arranged in the rotor 7, and the rotor 9 is rotationally driven by a torque motor 10.
この装置においては、チャンバ本体1 内を図示しない真
空源に接続して、真空排気後、炉内の黒鉛るつぼ12中で
マトリックス合金を加熱溶解し、その溶解後、炉上のシ
ャッタ2 を開放して、チャンバ本体1 の下面を貫通する
支持棒11を昇降可能にしたるつぼ昇降機構で、上記黒鉛
るつぼ12を水冷外筒7 内まで上昇させることにより、る
つぼ12内の溶湯中に回転子9 を挿入し、冷却室5 内にお
ける急速な冷却過程において、その回転子9 の回転によ
り半凝固合金を撹拌させる。回転子9 の先端には、図示
するように、予め、TiC 粒子をにアルミ箔13にくるんだ
状態で取り付けておく。In this apparatus, the chamber body 1 is connected to a vacuum source (not shown), and after evacuation, the matrix alloy is heated and melted in the graphite crucible 12 in the furnace, and after the melting, the shutter 2 on the furnace is opened. The crucible elevating mechanism that allows the support rod 11 penetrating the lower surface of the chamber body 1 to elevate and lower. The semi-solid alloy is inserted by stirring in a rapid cooling process in the cooling chamber 5 by the rotation of the rotor 9. As shown in the figure, TiC particles are attached to the tip of the rotor 9 in advance while being wrapped in an aluminum foil 13.
上記回転子9 を回転させるトルクモータ10は、回転子9
を10000 rpm 程度まで高速回転させ得るものとし、その
回転軸にトルク検出器及び回転検出器を設けて、それら
をディジタル表示器に接続している。The torque motor 10 that rotates the rotor 9 is
Is capable of high-speed rotation up to about 10,000 rpm, a torque detector and a rotation detector are provided on its rotation axis, and they are connected to a digital display.
上記装置例に示す内径55mmの黒鉛るつぼ内において、８
角形断面の回転子を用いる場合、その低速回転は、500
〜1000rpm 程度で回転させる必要があり、またそれに続
く高速回転は2000〜6000rpm 程度にする必要がある。In the graphite crucible with an inner diameter of 55 mm shown in the above device example, 8
When using a rotor with a square cross section, the low speed rotation is 500
It is necessary to rotate at ~ 1000 rpm, and subsequent high speed rotation should be at 2000-6000 rpm.
［実施例］ 第１図及び第２図に示す構成の装置を用い、真空溶解し
てマトリックス合金中に水冷外筒内で回転子を挿入し、
その際、回転子によってにアルミ箔でくるんだ TiC粒子
を合金中に押込み、回転子を1000 rpmで低速回転させ、
その後、凝固開始から凝固終了直前まで、4200 rpmで高
速回転攪拌凝固させた。[Example] Using the apparatus having the configuration shown in FIG. 1 and FIG.
At that time, TiC particles wrapped with aluminum foil were pushed into the alloy by the rotor, and the rotor was rotated at low speed at 1000 rpm,
After that, from the start of solidification to immediately before the end of solidification, solidification was performed by high-speed rotation stirring at 4200 rpm.
第３図ないし第６図は、得られた合金複合材料のミクロ
組織を示す顕微鏡写真（×100 ）で、第３図はマトリッ
クス合金として Al-4%Cu-20%TiC 合金を用いた場合、第
４図は Al-4%Cu-10%TiC 合金を用いた場合、第５図は A
l-4%Cu-0.5%Ti-0.1%B-4%TiC 合金を用いた場合、第６図
は Al-4%Cu-0.5%Ti-0.1%B-2%TiC 合金を用いた場合を示
している。3 to 6 are micrographs (× 100) showing the microstructure of the obtained alloy composite material, and FIG. 3 shows the case where Al-4% Cu-20% TiC alloy is used as the matrix alloy. Fig. 4 shows the case where Al-4% Cu-10% TiC alloy is used, and Fig. 5 shows A
When using l-4% Cu-0.5% Ti-0.1% B-4% TiC alloy, Fig. 6 shows the case using Al-4% Cu-0.5% Ti-0.1% B-2% TiC alloy. Shows.
これらの顕微鏡写真によれば、極めて均質で微細な Al-
Cu-TiC合金複合材料が得られることがわかる。According to these micrographs, extremely homogeneous and fine Al-
It can be seen that a Cu-TiC alloy composite material is obtained.
［発明の効果］ このような本発明の方法によれば、粉末冶金法でつくら
れるものに匹敵するほど均質で微細なAl-Cu-TiC 合金複
合材料を得ることができ、しかもマトリックス合金に対
して20wt％程度まで多量のTiC を含む均質な Al-Cu-TiC
合金を容易に得ることができる。[Effects of the Invention] According to the method of the present invention as described above, it is possible to obtain an Al-Cu-TiC alloy composite material which is as homogeneous and fine as that produced by the powder metallurgy method. Homogeneous Al-Cu-TiC containing a large amount of TiC up to 20 wt%
The alloy can be easily obtained.
第１図は本発明に基づいてAl-Cu-TiC 合金複合材料を製
造する装置の断面図、第２図はその要部断面図、第３図
ないし第６図は本発明によって得られた合金複合材料の
金属組織を示す図面代用顕微鏡写真である。 1 ……真空容器、6 ……冷却室、 9 ……回転子。FIG. 1 is a sectional view of an apparatus for producing an Al—Cu—TiC alloy composite material based on the present invention, FIG. 2 is a sectional view of an essential part thereof, and FIGS. 3 to 6 are alloys obtained by the present invention. It is a drawing substitute micrograph which shows the metal structure of a composite material. 1 ...... vacuum container, 6 ...... cooling chamber, 9 ...... rotor.
Claims (1)
アルミ箔でくるんだTiC 粒子を添加して、溶湯中に挿入
した回転子を低速回転させることにより、上記TiC 粒子
を分散させ、冷却を継続しながら、凝固開始と同時に回
転子を高速回転させて、生成した球状結晶を微細化しな
がら結晶粒間隙にTiC 粒子を均一に分散させ、均質微細
な組織をもつ粒子分散強化型の合金複合材料を得ること
を特徴とするAl-Cu-TiC 合金複合材料の製造方法。1. A TiC particle wrapped with aluminum foil in a cooling chamber is added to a molten Al-Cu alloy, and the rotor inserted in the molten metal is rotated at a low speed to disperse the TiC particle. While continuing cooling, the rotor is rotated at a high speed simultaneously with the start of solidification, and the spherical crystals produced are refined to uniformly disperse the TiC particles in the interstices of the crystal grains, and a particle dispersion strengthened alloy with a homogeneous microstructure. A method for producing an Al-Cu-TiC alloy composite material, which comprises obtaining a composite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62049777A JPH0627294B2 (en) | 1987-03-04 | 1987-03-04 | Method for producing Al-Cu-TiC alloy composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62049777A JPH0627294B2 (en) | 1987-03-04 | 1987-03-04 | Method for producing Al-Cu-TiC alloy composite material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63216919A JPS63216919A (en) | 1988-09-09 |
| JPH0627294B2 true JPH0627294B2 (en) | 1994-04-13 |
Family
ID=12840601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62049777A Expired - Lifetime JPH0627294B2 (en) | 1987-03-04 | 1987-03-04 | Method for producing Al-Cu-TiC alloy composite material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0627294B2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5342765B2 (en) * | 1971-08-26 | 1978-11-14 |
-
1987
- 1987-03-04 JP JP62049777A patent/JPH0627294B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63216919A (en) | 1988-09-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |