JPS6436746A - Manufacture of nonmagnetic age-hardening austenitic steel with high hardness by powder method - Google Patents
Manufacture of nonmagnetic age-hardening austenitic steel with high hardness by powder methodInfo
- Publication number
- JPS6436746A JPS6436746A JP19243087A JP19243087A JPS6436746A JP S6436746 A JPS6436746 A JP S6436746A JP 19243087 A JP19243087 A JP 19243087A JP 19243087 A JP19243087 A JP 19243087A JP S6436746 A JPS6436746 A JP S6436746A
- Authority
- JP
- Japan
- Prior art keywords
- powders
- carbides
- steel
- raw materials
- nonmagnetic
- 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.)
- Pending
Links
Landscapes
- Powder Metallurgy (AREA)
Abstract
PURPOSE:To improve the hot hardness of a steel, by using, as starting raw materials, respective pulverized powders, as raw materials, of metals as simple substances, carbides, etc., for producing a steel with a specific composition and by subjecting the above to pressing and heat treatment under respectively prescribed conditions. CONSTITUTION:Pulverized powders as raw materials (powders of Fe, Cr, and Mn, powders of the carbides of Cr, V, Nb, and Ti, graphite powder, etc.) for producing a steel having a composition consisting of 0.65-1.40% C, 10.00-20.00% Mn, one or more kinds (2.00-6.00%, in total, of two or more kinds) among 7.00-15.00% Cr, 2.00-6.00% V, 2.00-6.00% Nb, and 1.80-5.00% Ti, and the balance iron with usual impurities as powdery starting raw materials. These powders are mixed and cold-press- compacted, and the resulting green compact is subjected to sintering which doubles as diffusion treatment (1,050-1,250 deg.C) in vacuum or an hydrogen and further to hot isostatic pressing finish which doubles as diffusion treatment at 1,050-1,250 deg.C. By this method, the carbides of V, Nb, Ti, etc., are refined and the amount of precipitation of the carbides in the course from solution heat treatment to age hardening treatment is increased, by which a nonmagnetic steel having high hardness can be obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19243087A JPS6436746A (en) | 1987-07-31 | 1987-07-31 | Manufacture of nonmagnetic age-hardening austenitic steel with high hardness by powder method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19243087A JPS6436746A (en) | 1987-07-31 | 1987-07-31 | Manufacture of nonmagnetic age-hardening austenitic steel with high hardness by powder method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6436746A true JPS6436746A (en) | 1989-02-07 |
Family
ID=16291180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19243087A Pending JPS6436746A (en) | 1987-07-31 | 1987-07-31 | Manufacture of nonmagnetic age-hardening austenitic steel with high hardness by powder method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6436746A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2536862A4 (en) * | 2010-02-15 | 2016-07-13 | Federal Mogul Corp | A master alloy for producing sinter hardened steel parts and process for the production of sinter hardened parts |
-
1987
- 1987-07-31 JP JP19243087A patent/JPS6436746A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2536862A4 (en) * | 2010-02-15 | 2016-07-13 | Federal Mogul Corp | A master alloy for producing sinter hardened steel parts and process for the production of sinter hardened parts |
| US10618110B2 (en) | 2010-02-15 | 2020-04-14 | Tenneco Inc. | Master alloy for producing sinter hardened steel parts and process for the production of sinter hardened parts |
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