GB622660A - Improvements in or relating to the thermal treatment of aluminium base alloys - Google Patents
Improvements in or relating to the thermal treatment of aluminium base alloysInfo
- Publication number
- GB622660A GB622660A GB18862/46A GB1886246A GB622660A GB 622660 A GB622660 A GB 622660A GB 18862/46 A GB18862/46 A GB 18862/46A GB 1886246 A GB1886246 A GB 1886246A GB 622660 A GB622660 A GB 622660A
- Authority
- GB
- United Kingdom
- Prior art keywords
- treatment
- per cent
- cooling
- working
- aluminium base
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Extrusion Of Metal (AREA)
Abstract
In a process of working precipitation hardening aluminium base alloys which after treatment exhibit a lamellar structure, the alloy after the initial working and prior to the final hot working operation is subjected to a solution treatment at 454 to 593 DEG C. and immediately thereafter to an intermediate thermal treatment at 343 to 399 DEG C. to precipitate a major proportion of the soluble constituents and then cooling to room temperature. The cooling to the intermediate temperature may be at a rate not exceeding 33 DEG C. per hour and to room temperature at an uncontrolled rate. The preferred treatment is a solution treatment at 482-510 DEG C. for 4 to 30 hours, cooling at 14 DEG C. per hour to 371 to 388 and soaking within this range for 8 to 16 hours. This treatment may take place at any stage after the initial working and prior to the final hot working and precipitation hardening, e.g. it may follow extrusion and preceed forging. Suitable alloys are those containing 1-12 per cent Cu, 1-14 per cent Si, 0-16 per cent Mg, 0-10 per cent Zn, the remainder being Al.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US622660XA | 1942-12-31 | 1942-12-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB622660A true GB622660A (en) | 1949-05-05 |
Family
ID=22041333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB18862/46A Expired GB622660A (en) | 1942-12-31 | 1946-06-24 | Improvements in or relating to the thermal treatment of aluminium base alloys |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB622660A (en) |
-
1946
- 1946-06-24 GB GB18862/46A patent/GB622660A/en not_active Expired
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