JPS55100930A - Thermal treatment for stabilizing austenitic stainless steel - Google Patents
Thermal treatment for stabilizing austenitic stainless steelInfo
- Publication number
- JPS55100930A JPS55100930A JP604679A JP604679A JPS55100930A JP S55100930 A JPS55100930 A JP S55100930A JP 604679 A JP604679 A JP 604679A JP 604679 A JP604679 A JP 604679A JP S55100930 A JPS55100930 A JP S55100930A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- area
- stainless steel
- austenitic stainless
- cr23c6
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
PURPOSE:To prevent sensitization caused by welding heat, i.e., intergrain corrosion and intergrain type stress corrosion cracks by applying specific stabilization treatment to stabilized austenitic stainless steel added with Nb, Ti, etc. CONSTITUTION:Solid solution treatment is applied to stabilized austenitic stainless steel in which Nb, Ti, etc. is added to render contained C to be NbC, TiC so as to prevent Cr23C6 from forming at grain boundaries. Then, the steel is heated to have temperature gradient such that the area to be welded is locally heated to temperature Th deg.C or more in which NbC, TiC start precipitating, and other area is at temperature between Th deg.C and Tm deg.C at which Cr23C6 starts precipitating. During heating process in this thermal treatment, NbC, TiC is precipitated and therefore dissolved C in the base is greatly reduced. As a result, dissolved C content becomes higher in the adjacent area where temperature is higher than Th deg.C, and C diffuses into low C concentration area and results in less than 0.02%. Thus, Cr23C6 formation at grain boundaries is prevented, Cr concentration is not reduced, and no stress corrosion cracks occurs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP604679A JPS55100930A (en) | 1979-01-24 | 1979-01-24 | Thermal treatment for stabilizing austenitic stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP604679A JPS55100930A (en) | 1979-01-24 | 1979-01-24 | Thermal treatment for stabilizing austenitic stainless steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55100930A true JPS55100930A (en) | 1980-08-01 |
Family
ID=11627675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP604679A Pending JPS55100930A (en) | 1979-01-24 | 1979-01-24 | Thermal treatment for stabilizing austenitic stainless steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55100930A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100340499B1 (en) * | 1997-09-24 | 2002-11-16 | 주식회사 포스코 | A Heat Treatment Method of Austenitic Stainless Hot Rolled Steel Sheet Containg Ti |
| KR100689758B1 (en) | 2006-04-10 | 2007-03-08 | 한국타이어 주식회사 | Method of preparing stainless steel for fuel cell and fuel cell prepared by the same |
| KR100689757B1 (en) | 2006-04-10 | 2007-03-08 | 한국타이어 주식회사 | Method of preparing stainless steel for fuel cell and fuel cell prepared by the same |
| CN110306013A (en) * | 2019-05-14 | 2019-10-08 | 江苏绿叶锅炉有限公司 | A kind of 300 series austenitic stainless steels solid solution and stabilized heat treatment process |
-
1979
- 1979-01-24 JP JP604679A patent/JPS55100930A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100340499B1 (en) * | 1997-09-24 | 2002-11-16 | 주식회사 포스코 | A Heat Treatment Method of Austenitic Stainless Hot Rolled Steel Sheet Containg Ti |
| KR100689758B1 (en) | 2006-04-10 | 2007-03-08 | 한국타이어 주식회사 | Method of preparing stainless steel for fuel cell and fuel cell prepared by the same |
| KR100689757B1 (en) | 2006-04-10 | 2007-03-08 | 한국타이어 주식회사 | Method of preparing stainless steel for fuel cell and fuel cell prepared by the same |
| CN110306013A (en) * | 2019-05-14 | 2019-10-08 | 江苏绿叶锅炉有限公司 | A kind of 300 series austenitic stainless steels solid solution and stabilized heat treatment process |
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