Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1979-10-03
1981-07-21
Baldwin, Robert D.
Metal founding
Process
Shaping liquid metal against a forming surface
164120, B22D 1914
Patent
active
042792894
ABSTRACT:
A process for producing fiber-reinforced magnesium alloy materials with improved mechanical properties which includes the steps of placing a shaped article of silicon carbide whiskers or silica type, alumina type or silica-alumina type fibers in a casting mold, and pouring into the mold a molten matrix of a magnesium alloy at a temperature lower than 800.degree. C. The shaped article is impregnated with the molten matrix by means of a high pressure coagulation casting method while maintaining the original configuration of the shaped article to form a composite. A magnesium-silicon compound and/or a magnesium-aluminum compound are precipitated in the matrix at the filling and composite-forming step by reaction between the surface fibers of the shaped article and the molten matrix. The whiskers or fibers may be covered by a film of copper, nickel or silver to vary the amount of the precipitated compounds.
REFERENCES:
patent: 3529655 (1970-09-01), Lawrence
patent: 3547180 (1970-12-01), Cochran
patent: 3744547 (1973-07-01), Danhard
patent: 3828839 (1974-08-01), Dhingra
patent: 3949804 (1976-04-01), Kaneko et al.
patent: 4053011 (1977-10-01), Riewald et al.
Arai Takeo
Ban Keisuke
Daimaru Akimasa
Baldwin Robert D.
Honda Giken Kogyo Kabushiki Kaisha
Lin K. Y.
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