GB438512A - Process for improving the resistance to corroding agents of aluminium base alloys - Google Patents
Process for improving the resistance to corroding agents of aluminium base alloysInfo
- Publication number
- GB438512A GB438512A GB10877/34A GB1087734A GB438512A GB 438512 A GB438512 A GB 438512A GB 10877/34 A GB10877/34 A GB 10877/34A GB 1087734 A GB1087734 A GB 1087734A GB 438512 A GB438512 A GB 438512A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- compound
- magnesium
- aluminium
- alloys
- 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
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/10—Alloys based on aluminium with zinc as the next major constituent
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Conductive Materials (AREA)
- Extrusion Of Metal (AREA)
Abstract
In a process for improving the resistance to deterioration of their mechanical properties when in contact with corroding agents, of aluminium base alloys containing about 3-12 per cent of magnesium, and about 2-6 per cent of zinc, sufficient magnesium being available, after satisfying any foreign constituents present, to form a solution, super-saturated at room temperature, of the compound MgZn2 as well as of the compound Al3Mg2 in the basic aluminium, the alloys are heated to temperatures between the point of solidification and as a lower limit, the temperature range in which the change of solubility in the solid state of magnesium in aluminium becomes noticeable and then subjected, preferably after quenching, to an annealing at about 100 to 200 DEG C., which heating leads to a segregation of the compound MgZn2 and also of a portion of the compound Al3Mg2 in a highly dispersed form and in a state of uniform distribution. The alloys may also contain 0,1-2,0 per cent of manganese and up to 1 per cent of silicon. In an example, an extruded alloy containing 6 per cent of magnesium, 3 of zinc, 0,5 of manganese and the balance aluminium was heated at between 400 and 440 DEG C., and then, preferably after chilling, annealed at 200 DEG C. for 2-10 hours. Specification 432,351 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE438512X | 1933-06-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB438512A true GB438512A (en) | 1935-11-11 |
Family
ID=6507175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10877/34A Expired GB438512A (en) | 1933-06-09 | 1934-04-11 | Process for improving the resistance to corroding agents of aluminium base alloys |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB438512A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE968234C (en) * | 1937-07-24 | 1958-01-30 | Westfaelische Leichtmetallwerk | Process for the production of objects with high mechanical properties and high intergranular and stress corrosion resistance from alloys of the type Al-Mg-Zn |
| US2865796A (en) * | 1955-10-12 | 1958-12-23 | Rosenkranz Wilhelm | Method of increasing stress corrosion resistance of aluminum alloys |
| DE972131C (en) * | 1939-12-20 | 1959-05-27 | Ver Leichtmetallwerke Gmbh | Stress corrosion resistant aluminum-zinc-magnesium alloy |
| DE973692C (en) * | 1939-10-01 | 1960-05-05 | Ver Leichtmetallwerke Gmbh | Process to increase the stress corrosion resistance of wrought aluminum alloys |
-
1934
- 1934-04-11 GB GB10877/34A patent/GB438512A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE968234C (en) * | 1937-07-24 | 1958-01-30 | Westfaelische Leichtmetallwerk | Process for the production of objects with high mechanical properties and high intergranular and stress corrosion resistance from alloys of the type Al-Mg-Zn |
| DE973692C (en) * | 1939-10-01 | 1960-05-05 | Ver Leichtmetallwerke Gmbh | Process to increase the stress corrosion resistance of wrought aluminum alloys |
| DE972131C (en) * | 1939-12-20 | 1959-05-27 | Ver Leichtmetallwerke Gmbh | Stress corrosion resistant aluminum-zinc-magnesium alloy |
| US2865796A (en) * | 1955-10-12 | 1958-12-23 | Rosenkranz Wilhelm | Method of increasing stress corrosion resistance of aluminum alloys |
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