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° 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.
Inventors
👤 Keisuke Ban
👤 Takeo Arai
👤 Akimasa Daimaru
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-08 14:49
CPC Classifications
B; B22; B22D; B22D19/00; B22D19/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A process for the preparation of fiber-reinforced magnesium alloy materials, which comprises placing a shaped article of silica-alumina type fibers having an average diameter of 2 microns or less and a bulk density of 0.5 g/cc or less in a casting mold, pouring as a matrix a melt of magnesium alloy maintained at a temperature lower than 800° C. into the casting mold, filling said magnesium alloy melt into said shaped article by means of a high pressure coagulation casting method while maintaining the configuration of the shaped article to form a composite, whereby a reaction between the surface fibers of said shaped article and the melt causes precipitation of a mixture of magnesium-silicon and magnesium-aluminum compounds.
Claim 2
Dependent Claim
117 words
A process for the preparation of fiber-reinforced magnesium alloy materials, which comprises placing a shaped article of silica-alumina type fibers having an average diameter of 2 microns or less and a bulk density of 0.5 g/cc or less in a casting mold, pouring as a matrix a melt of magnesium alloy maintained at a temperature lower than 800° C. into the casting mold, filling said magnesium alloy melt into said shaped article by means of a high pressure coagulation casting method while maintaining the configuration of the shaped article to form a composite, whereby a reaction between the surface fibers of said shaped article and the melt causes precipitation of a mixture of magnesium-silicon and magnesium-aluminum compounds.