Amorphous particle reinforced magnesium-base composite material and manufacture process

Abstract

The invention discloses an amorphous reinforced magnesium-based compound material and a preparation technique thereof. The material includes an amorphous grain NixMyTz and a magnesium-based alloy MgaAlbQcRd; wherein, x is equal to or more than 30 or equal to or less than 70; y is equal to or more than 3 or equal to or less than 50; z is equal to or more than 0, or equal to or less than 35; a is equal to or more than 80, or equal to or less than 100; b is equal to or more than 0, or equal to or less than 18; c is or is equal to or more than 0, or equal to or less than and d is equal to or more than 0, or equal to or less than 3. Simultaneously, the invention also provides the preparation technique of the amorphous reinforced magnesium-based compound material: the grains of a magnesium alloy and the grains of an amorphous alloy are uniformly mixed and pressed in a cold pressing way with a cold pressing pressure of 30 to 250MPa; then the grains of the magnesium alloy and the grains of the amorphous alloy are sintered in a hot pressing sinter boiler with a hot pressing pressure of 5 to 60MPa; the sintering temperature is arranged between 500 and 700 DEG C; the sintering time lasts 30 to 180 minutes. An amorphous metal reinforcement adopted by the amorphous reinforced magnesium-based compound material has typical metal characteristics and can be better combined with the interface between magnesium and a magnesium alloy matrix, thereby better facilitating to improving the reliability of the material during the using process; simultaneously the preparation technique of the amorphous reinforced magnesium-based compound material is more simplified, thus being suitable for industrial production.

Description

technical field [0001] The invention relates to a metal-based composite material and a preparation process thereof, in particular to a magnesium-based composite material and a preparation process thereof. Background technique [0002] Due to its high strength, hardness, elastic modulus and corrosion resistance, amorphous alloys have shown important application value in aerospace devices, precision machinery, information and other fields. In recent years, research on bulk amorphous alloy materials The research has attracted the attention of scientific and technological workers from various fields of physics, chemistry and material science, and it is considered to be the most promising new generation of structural materials. The outstanding mechanical properties of amorphous alloys constitute an important condition for the reinforcement phase of composite materials. The Chinese invention patent "Production method of magnesium-based composite material or magnesium alloy compos...

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Problems solved by technology

The Chinese invention patent "Production method of magnesium-based composite material or magnesium alloy composite material" CN98109439.2 discloses a non-metallic reinforced magnesium or magnesium alloy with ceramic mechanical properties such as silicon carbide particles and aluminum oxide short fibers, which can be obtained A ceramic material reinforced magnesium-based composite material with excellent mechanical properties has been invented, but the reinforcement of this invention is a crystalline non-metallic material, which has poor wettability with the metal matrix, resulting in poor interfacial bonding between the reinforcement and the matrix; literature [Fabrication of Ni-Nb-Tametallic glass reinforced Al-based alloy matrix composites by infiltration casting process, Scripta Materialia, 50(2004): 1367-1371] discloses a 39.2Ni-20.6Nb-40.2Ta prepared by die-casting process (weight percent) flake-shaped amorphous reinforced Al-6.5Si-0.25Mg (weight percent) composite material, the yield strength and fracture strength of the aluminum-based composite material of the amorphous reinforcement phase are significantly improved, but this method is currently limited to Laboratory use, not suitable for industrial production

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