GB380045A - Improvements in processes for the production of articles from stainless chromium-nickel steel alloys - Google Patents
Improvements in processes for the production of articles from stainless chromium-nickel steel alloysInfo
- Publication number
- GB380045A GB380045A GB15547/31A GB1554731A GB380045A GB 380045 A GB380045 A GB 380045A GB 15547/31 A GB15547/31 A GB 15547/31A GB 1554731 A GB1554731 A GB 1554731A GB 380045 A GB380045 A GB 380045A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- temperature
- articles
- production
- cold working
- 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
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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
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 Steel (AREA)
Abstract
In the production of articles such as sheets, strips or wires from austenitic chromium-nickel steel alloys, the articles are subjected to cold working such as rolling, forging, pressing or drawing and to a subsequent recrystallizing heating, after which they are cooled slowly or rapidly. The cold working is performed at a temperature at which no recrystallization occurs, e.g. not above 950 DEG C., and the extent of the working is to reduce the cross-sectional area by more than 15 per cent, and preferably about 50 per cent. Practically the whole of the carbon is precipitated before the cold working operation, at a temperature of about 600-900 DEG C. or during the operation at its specified temperature. The temperature employed in the recrystallization heating is from 850-1020 DEG C. An example of an alloy to which the invention relates contains 6 per cent to 40 per cent chromium, 40 per cent to 4 per cent nickel and up to about 0,5 per cent carbon and alloys produced according to the invention are stated not to become brittle if heated to a temperature of from 500-900 DEG C. and exposed to chemical attacks.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE380045X | 1930-06-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB380045A true GB380045A (en) | 1932-08-29 |
Family
ID=6345018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15547/31A Expired GB380045A (en) | 1930-06-02 | 1931-05-27 | Improvements in processes for the production of articles from stainless chromium-nickel steel alloys |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB380045A (en) |
-
1931
- 1931-05-27 GB GB15547/31A patent/GB380045A/en not_active Expired
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