JPH0133528B2 - - Google Patents
Info
- Publication number
- JPH0133528B2 JPH0133528B2 JP9849484A JP9849484A JPH0133528B2 JP H0133528 B2 JPH0133528 B2 JP H0133528B2 JP 9849484 A JP9849484 A JP 9849484A JP 9849484 A JP9849484 A JP 9849484A JP H0133528 B2 JPH0133528 B2 JP H0133528B2
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- austenite
- corrosion resistance
- solid solution
- resistant
- 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
Links
- 239000000956 alloy Substances 0.000 claims description 25
- 229910045601 alloy Inorganic materials 0.000 claims description 24
- 229910001566 austenite Inorganic materials 0.000 claims description 8
- 229910052710 silicon Inorganic materials 0.000 claims description 8
- 239000010703 silicon Substances 0.000 claims description 8
- 229910017082 Fe-Si Inorganic materials 0.000 claims description 7
- 229910017133 Fe—Si Inorganic materials 0.000 claims description 7
- 239000006104 solid solution Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims 2
- 238000000034 method Methods 0.000 claims 1
- 238000005260 corrosion Methods 0.000 description 16
- 230000007797 corrosion Effects 0.000 description 16
- 229910001018 Cast iron Inorganic materials 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 235000011187 glycerol Nutrition 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000005482 strain hardening Methods 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- ZVBWPVOCTORPLM-UHFFFAOYSA-N formylsilicon Chemical compound [Si]C=O ZVBWPVOCTORPLM-UHFFFAOYSA-N 0.000 description 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Soft Magnetic Materials (AREA)
- Heat Treatment Of Articles (AREA)
Description
（産業上の利用分野）
本発明はＣをほとんど含まないFe―Si系オー
ステナイト合金にMnを利用し、高強靭性及び耐
食・耐熱・耐磨性・無磁性を有するオーステナイ
トFe―Si系合金の製造方法に関するものである。
（従来技術）
一般に高珪素シラル耐熱鋳鉄（Si4.5〜5.5％）
及び高珪素耐酸鋳鉄（Si14〜15％）フエライト組
識が得られる耐熱耐食性のすぐれた材料でもある
が、その構造はα′共有結合規則格子組織があるの
できわめて硬くて脆い性質を有している。従つ
て、加工性も悪く、脆性材料としてその利用範囲
は限定される。
ハツドフイールド鋼と呼ばれている鋼はMnを
11〜13含有し、水靭化処理して常温でオーステナ
イト組織を有している。良好な靭性、延性及び加
工硬化性をそなえている耐摩耗性材料である。こ
の材料はＣを含有し、Si含有量が少ないので耐食
性が優れていない。
シリコロイと呼ばれているFe―Si系合金は
Si3.5〜７％、Ni4〜16％、Cr8〜28％、Mo＋V1
〜４％、Cu2〜４％あるいはW1〜４％、Co２
％を含有している強靭性、耐熱耐食、耐磨合金で
ある。しかしこの合金は多量のNi、Crを添加す
るのでコストの高い欠点がある。
（発明が解決しようとする課題）
従来の高珪素耐熱耐食鋳鉄の最大の欠点である
脆性、シリコロイ合金の欠点である。高コスト及
びハツドフイールド鋼の低耐食性を改善し、高強
靭性及び耐食・耐熱・耐磨性・無磁性を有する
Fe―Si系合金を得ることにある。
（問題点を解決するための手段）
本発明は、多量のSiを含有することによつて耐
熱・耐食性を増し、Niよりもオーステナイト化
を促進する作用の強い低価で豊富なMnを利用し
てＣ含有量を限制してMnの炭化物を防止して、
高珪素固溶強化オーステナイトを主な組織とした
高強靭性・耐食耐熱性の可能な合金である。
（実施例）
次に本発明に係る合金を構成する各元素の組成
及びそれを限定した理由について説明する。
Si：４〜15％について；
オーステナイトを固溶強化と耐熱、耐食性を改
善するためにSi含有量〓４％とする。Si量が15％
を超えると金属化合物ができ靭性が悪くなる。
Mn：12〜30％について；
Si4〜15％、Ｃ0.05％範囲で、オーステナイ
トとするためにMn12〜30％とする必要がある。
Ｃ0.05％について；
耐食、耐熱性を改善すると炭化物による脆性を
防止するためにＣ＜0.05％とする。
Ｐ＜0.03％、Ｓ＜0.03％について；
耐食、耐熱性及び機械的性質を改善するために
Ｐ＜0.03％、Ｓ＜0.03％とする。
Cr3〜10％について；
耐食・耐熱性及び機械的性質を改善するために
Cr3〜10％とする。Si4〜15％、Mn12〜30％範囲
でCr＞10％の場合にα′相ができ、脆い材料にな
る。
（実際の合金例）
下記表１に示す各種組成合金をAr吹込み高周
波炉で溶解して鋳造した後、11000℃固溶処理し
焼入れし引張り試験を行ない、10Vol％ H2SO4
水溶液中に30℃24hr浸漬し、単位面積当りの腐食
前後の重量差を測定した。その結果を表２に示
し、その組織を第１図ないし第３図に示す。
(Industrial Application Field) The present invention utilizes Mn in an Fe-Si austenitic alloy that contains almost no C, thereby creating an austenitic Fe-Si alloy that has high toughness, corrosion resistance, heat resistance, wear resistance, and non-magnetism. This relates to a manufacturing method. (Conventional technology) Generally high-silicon silal heat-resistant cast iron (Si4.5-5.5%)
and high-silicon acid-resistant cast iron (Si14-15%).It is also a material with excellent heat and corrosion resistance that provides a ferrite structure, but its structure has an ordered lattice structure of α' covalent bonds, making it extremely hard and brittle. . Therefore, its workability is poor, and its range of use is limited as a brittle material. Steel called hard field steel contains Mn.
It contains 11 to 13 and has an austenite structure at room temperature after water toughening treatment. It is a wear-resistant material with good toughness, ductility, and work hardening properties. This material contains C and has a low Si content, so it does not have excellent corrosion resistance. The Fe-Si alloy called silicolloy is
Si3.5~7%, Ni4~16%, Cr8~28%, Mo+V1
~4%, Cu2~4% or W1~4%, Co2
It is a tough, heat-resistant, corrosion-resistant, and wear-resistant alloy containing %. However, this alloy has the disadvantage of high cost because it contains large amounts of Ni and Cr. (Problems to be Solved by the Invention) The biggest drawback of conventional high-silicon heat-resistant and corrosion-resistant cast iron is brittleness, which is a drawback of silicolloy alloys. Improves the high cost and low corrosion resistance of hard field steel, and has high toughness, corrosion resistance, heat resistance, wear resistance, and non-magnetic properties.
The purpose is to obtain a Fe-Si alloy. (Means for Solving the Problems) The present invention improves heat resistance and corrosion resistance by containing a large amount of Si, and utilizes low-cost and abundant Mn, which has a stronger effect of promoting austenitization than Ni. to limit C content and prevent Mn carbide.
It is an alloy with high strength, toughness, and corrosion and heat resistance that has a main structure of high-silicon solid solution strengthened austenite. (Example) Next, the composition of each element constituting the alloy according to the present invention and the reason for limiting it will be explained. Si: 4-15%; In order to solid-solution strengthen austenite and improve heat resistance and corrosion resistance, the Si content is set to 4%. Si content is 15%
If it exceeds this amount, metal compounds will be formed and the toughness will deteriorate. Regarding Mn: 12 to 30%; Si is in the range of 4 to 15%, C is in the range of 0.05%, and Mn needs to be 12 to 30% to form austenite. About C 0.05%; In order to improve corrosion resistance and heat resistance and prevent brittleness due to carbides, C should be <0.05%. Regarding P<0.03% and S<0.03%; In order to improve corrosion resistance, heat resistance and mechanical properties, P<0.03% and S<0.03% are set. About Cr3~10%; To improve corrosion resistance, heat resistance and mechanical properties
Cr3~10%. When Cr > 10% in the range of Si 4 to 15% and Mn 12 to 30%, an α' phase is formed and the material becomes brittle. (Actual alloy examples) Various composition alloys shown in Table 1 below were melted and cast in an Ar-injected high-frequency furnace, then subjected to solid solution treatment at 11,000℃, quenched, and subjected to a tensile test, resulting in 10Vol% H 2 SO 4
It was immersed in an aqueous solution at 30°C for 24 hours, and the weight difference per unit area before and after corrosion was measured. The results are shown in Table 2, and the structures are shown in FIGS. 1 to 3.
【表】【table】
【表】
本合金材料の組織
第１図に実施例No.１合金の組織を示す。そのＡ
はクロム酸＋リン酸で電解腐食したもので、Ｂは
HF酸20％、HNO340％、グリセリン20％で腐食
したもである。第２図に実施例のNo.２合金のナイ
タルにより腐食した組織を示す。第３図に実施例
のNo.３合金のHF酸20％、HNO340％、グリセリ
ン20％で腐食した組織を示す。
（発明の効果）
本発明の合金は(1)シリコロイよりSi含有量が高
いので機械的性質が強い。(2)低価豊富なMnを利
用して高Ni、Crのシリコロイと比べてコストが
低い。(3)ハツドフイールド鋼と比べてSi含有量が
高いので、耐食耐熱性、加工硬化性、機械的性質
が高い。(4)高珪素耐熱酸鋳鉄と比べて、強靭性が
きわめて強い。(5)本発明の合金である単一オース
テナイト相のFe―Si系合金は同じSi含有量のフ
イライト相（α′相を含む）高珪素鋳鉄よりも耐食
性が強い。…等の優れた効果を有している。[Table] Structure of this alloy material Figure 1 shows the structure of Example No. 1 alloy. That A
is electrolytically corroded with chromic acid + phosphoric acid, and B is
Corroded with 20% HF acid, 40% HNO 3 and 20% glycerin. FIG. 2 shows the structure corroded by nital in the No. 2 alloy of Example. FIG. 3 shows the structure of No. 3 alloy of Example corroded by 20% HF acid, 40% HNO 3 and 20% glycerin. (Effects of the Invention) The alloy of the present invention (1) has a higher Si content than silicolloy, so it has stronger mechanical properties. (2) Low cost compared to high Ni and Cr silicolloys by using low-cost and abundant Mn. (3) Compared to hard field steel, it has a higher Si content, so it has higher corrosion resistance, heat resistance, work hardening properties, and mechanical properties. (4) Extremely strong toughness compared to high-silicon heat-resistant acid cast iron. (5) The single austenite phase Fe-Si alloy, which is the alloy of the present invention, has stronger corrosion resistance than phyllite phase (including α' phase) high-silicon cast iron with the same Si content. It has excellent effects such as...
第１図はNo.１合金例の組織。第２図はNo.２合金
例の組織。第３図はNo.３合金例の組織。
Figure 1 shows the structure of the No. 1 alloy example. Figure 2 shows the structure of No. 2 alloy example. Figure 3 shows the structure of the No. 3 alloy example.
Claims (1)
0.03％、残部Feからなる合金を固溶化と水靭性処
理して、高珪素固溶強化オーステナイトを特徴組
織としたオーステナイトFe―Si系合金の製造方
法。 ２ Si4〜15％、Mn12〜30％、Cr3〜10％、Ｃ
0.05％、Ｐ＜0.03％、Ｓ＜0.03％、残部Feからな
る合金を固溶化と水靭性処理して高珪素固溶強化
オーステナイトを特徴組織としたオーステナイト
Fe―Si系合金の製造方法。[Claims] 1 Si4~15%, Mn12~30%, C0.05%, S<
A method for manufacturing an austenitic Fe-Si alloy having a characteristic structure of high silicon solid solution strengthened austenite by solid solution treatment and water toughness treatment of an alloy consisting of 0.03% Fe and the balance Fe. 2 Si4~15%, Mn12~30%, Cr3~10%, C
0.05%, P < 0.03%, S < 0.03%, the balance is Fe-based alloy, which is subjected to solid solution treatment and water toughness treatment to create austenite with a characteristic structure of high silicon solid solution strengthened austenite.
Manufacturing method of Fe-Si alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9849484A JPS60243218A (en) | 1984-05-18 | 1984-05-18 | Manufacture of austenitic fe-si alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9849484A JPS60243218A (en) | 1984-05-18 | 1984-05-18 | Manufacture of austenitic fe-si alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60243218A JPS60243218A (en) | 1985-12-03 |
| JPH0133528B2 true JPH0133528B2 (en) | 1989-07-13 |
Family
ID=14221195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9849484A Granted JPS60243218A (en) | 1984-05-18 | 1984-05-18 | Manufacture of austenitic fe-si alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60243218A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104073747B (en) * | 2014-06-26 | 2016-10-26 | 靖江市新程汽车零部件有限公司 | A kind of high intensity body sill plate |
| CN111218622A (en) * | 2020-03-12 | 2020-06-02 | 湖南省山力新材料有限责任公司 | Austenitic high manganese steel and preparation method thereof |
-
1984
- 1984-05-18 JP JP9849484A patent/JPS60243218A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60243218A (en) | 1985-12-03 |
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