GB748871A - Heat-treatment of alloys containing zinc and aluminium with a tendency to form dendrites on solidification - Google Patents
Heat-treatment of alloys containing zinc and aluminium with a tendency to form dendrites on solidificationInfo
- Publication number
- GB748871A GB748871A GB24904/52A GB2490452A GB748871A GB 748871 A GB748871 A GB 748871A GB 24904/52 A GB24904/52 A GB 24904/52A GB 2490452 A GB2490452 A GB 2490452A GB 748871 A GB748871 A GB 748871A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aluminium
- per cent
- alloys containing
- solidification
- tendency
- 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
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/165—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon of zinc or cadmium 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)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
A method of improving the toughness of aluminium-zinc alloys containing at least 20 per cent aluminium which on solidifying tend to produce dendrites, comprises annealing the alloy at a temperature between 300 DEG C. and the melting point for 1-3 hours and cooling at a rate not exceeding 5 DEG C. per minute. The cooling may be carried out immediately after casting or the casting may be cooled and reheated to the annealing temperature. The alloys treated may contain 20-50 per cent Al; up to 5,0 per cent Cu; up to 0,2 per cent Mg; and the balance Zn and unavoidable impurities. The preferred annealing range is 300-400 DEG C. and the cooling rate below 1 DEG C. per minute.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE748871X | 1951-10-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB748871A true GB748871A (en) | 1956-05-16 |
Family
ID=6649100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB24904/52A Expired GB748871A (en) | 1951-10-03 | 1952-10-03 | Heat-treatment of alloys containing zinc and aluminium with a tendency to form dendrites on solidification |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB748871A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2982677A (en) * | 1957-10-10 | 1961-05-02 | Voest Ag | Bearing alloys |
-
1952
- 1952-10-03 GB GB24904/52A patent/GB748871A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2982677A (en) * | 1957-10-10 | 1961-05-02 | Voest Ag | Bearing alloys |
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