GB625364A - Improvements relating to light metal bodies and methods of manufacturing the same - Google Patents
Improvements relating to light metal bodies and methods of manufacturing the sameInfo
- Publication number
- GB625364A GB625364A GB18835/47A GB1883547A GB625364A GB 625364 A GB625364 A GB 625364A GB 18835/47 A GB18835/47 A GB 18835/47A GB 1883547 A GB1883547 A GB 1883547A GB 625364 A GB625364 A GB 625364A
- Authority
- GB
- United Kingdom
- Prior art keywords
- powder
- aluminium
- hardness
- sintering
- produced
- 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
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/0408—Light metal alloys
- C22C1/0416—Aluminium-based alloys
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
625,364. Powder metallurgy. SOC. ANON. POUR L'INDUSTRIE DE L'ALUMINIUM. July 15, 1947, Nos. 18835 and 18836. Convention dates, July 17, 1946, and May 8, 1947. [Classes 83 (ii) and 83 (iv)] Making rods; working at specified temperatures.-Aluminium or aluminium alloy bodies of high tensile strength and Brinell hardness are made by compressing and sintering or by hot working metal powder of such fineness that at least 50 per cent of the particles have at least one dimension smaller than two microns. In one modification the powder is compacted at a pressure of two metric tons per square cm. and sintered at a temperature exceeding 400‹ C. and preferably between 550‹-and 600‹ C. A billet so produced may be extruded into rod at temperatures of from 200-630‹ C. The powder may be pressed dry but is preferably mixed into a paste with water. An increase in the oxygen content of the powder is said to increase the hardness of the article so that articles having parts of different degrees of hardness may be produced by using powders with different oxide contents. Alternatively the oxide content of the surface could be increased by subsequent treatment. If further oxidation is not required, the pressing and sintering may be carried out in an atmosphere of hydrogen or nitrogen. In a modification, the three steps of compacting, sintering and subsequent working are replaced by a single operation in which the powder is hot-pressed to the required final form in a die or is extruded at 500‹ C. It is stated that an aluminium or aluminium alloy body produced by the above method retains its comparatively high tensile strength and hardness under continued high temperatures.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH625364X | 1946-07-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB625364A true GB625364A (en) | 1949-06-27 |
Family
ID=4524363
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB18835/47A Expired GB625364A (en) | 1946-07-17 | 1947-07-15 | Improvements relating to light metal bodies and methods of manufacturing the same |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB625364A (en) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2659133A (en) * | 1950-08-16 | 1953-11-17 | Dow Chemical Co | Composite alloy |
US2659135A (en) * | 1950-08-16 | 1953-11-17 | Dow Chemical Co | Composite alloy |
US2659136A (en) * | 1950-08-16 | 1953-11-17 | Dow Chemical Co | Composite alloy |
US2659132A (en) * | 1950-08-16 | 1953-11-17 | Dow Chemical Co | Composite alloy |
US2659134A (en) * | 1950-08-16 | 1953-11-17 | Dow Chemical Co | Composite alloy |
US2678879A (en) * | 1951-05-10 | 1954-05-18 | Ind De L Aluminium Sa | Flaky aluminum powder |
US2678880A (en) * | 1951-05-10 | 1954-05-18 | Ind De L Aluminium Sa | Method of making flaky aluminum powder |
US2809891A (en) * | 1954-10-12 | 1957-10-15 | Aluminum Co Of America | Method of making articles from aluminous metal powder |
US2840891A (en) * | 1955-01-04 | 1958-07-01 | John S Nachtman | High temperature structural material and method of producing same |
US2861880A (en) * | 1954-11-18 | 1958-11-25 | Mcintyre Res Foundation | Aluminum powder |
US2894838A (en) * | 1956-10-11 | 1959-07-14 | Sintercast Corp America | Method of introducing hard phases into metallic matrices |
US2992178A (en) * | 1958-03-31 | 1961-07-11 | Lustman Benjamin | High strength control rods for neutronic reactors |
US3025441A (en) * | 1958-09-19 | 1962-03-13 | Gen Electric | Electrical capacitor |
US3463047A (en) * | 1966-03-11 | 1969-08-26 | Rheinmetall Gmbh | Method of making disintegrating bodies for use as practice ammunition |
DE1533236B1 (en) * | 1965-02-09 | 1970-04-30 | English Electric Co Ltd | Process for the production of dispersion hardened materials |
FR2370949A1 (en) * | 1976-11-10 | 1978-06-09 | Minnesota Mining & Mfg | SUBSONIC BALLISTIC PROJECTILES FOR ANIMALS |
-
1947
- 1947-07-15 GB GB18835/47A patent/GB625364A/en not_active Expired
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2659135A (en) * | 1950-08-16 | 1953-11-17 | Dow Chemical Co | Composite alloy |
US2659136A (en) * | 1950-08-16 | 1953-11-17 | Dow Chemical Co | Composite alloy |
US2659132A (en) * | 1950-08-16 | 1953-11-17 | Dow Chemical Co | Composite alloy |
US2659134A (en) * | 1950-08-16 | 1953-11-17 | Dow Chemical Co | Composite alloy |
US2659133A (en) * | 1950-08-16 | 1953-11-17 | Dow Chemical Co | Composite alloy |
US2678879A (en) * | 1951-05-10 | 1954-05-18 | Ind De L Aluminium Sa | Flaky aluminum powder |
US2678880A (en) * | 1951-05-10 | 1954-05-18 | Ind De L Aluminium Sa | Method of making flaky aluminum powder |
US2809891A (en) * | 1954-10-12 | 1957-10-15 | Aluminum Co Of America | Method of making articles from aluminous metal powder |
US2861880A (en) * | 1954-11-18 | 1958-11-25 | Mcintyre Res Foundation | Aluminum powder |
US2840891A (en) * | 1955-01-04 | 1958-07-01 | John S Nachtman | High temperature structural material and method of producing same |
US2894838A (en) * | 1956-10-11 | 1959-07-14 | Sintercast Corp America | Method of introducing hard phases into metallic matrices |
US2992178A (en) * | 1958-03-31 | 1961-07-11 | Lustman Benjamin | High strength control rods for neutronic reactors |
US3025441A (en) * | 1958-09-19 | 1962-03-13 | Gen Electric | Electrical capacitor |
DE1533236B1 (en) * | 1965-02-09 | 1970-04-30 | English Electric Co Ltd | Process for the production of dispersion hardened materials |
US3463047A (en) * | 1966-03-11 | 1969-08-26 | Rheinmetall Gmbh | Method of making disintegrating bodies for use as practice ammunition |
FR2370949A1 (en) * | 1976-11-10 | 1978-06-09 | Minnesota Mining & Mfg | SUBSONIC BALLISTIC PROJECTILES FOR ANIMALS |
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