Method for preparing amorphous alloy bulk material

Abstract

The invention provides a method for preparing an amorphous alloy bulk material. The preparation method adopts amorphous alloy powder as a raw material, and the characteristics of viscosity decrease and gradual softening of amorphous alloy with the increase of the temperature and the characteristic of superplasticity of the amorphous alloy in a supercooled liquid region are combined with the characteristics of rapid particle acceleration, low heating temperature, small heat influences, difficult oxidation and microstructure change, small thermal stress and final compressive stress state in thecold spraying process and the optimization control of process parameters to achieve high-speed bumping deposition of the particles layer by layer in order to form the he bulk material; and the impactof the subsequent particles has a compacting and densifying effect on formed deposits in a range of sizes of several particle thicknesses. The method has the technical advantages of simple process, short production cycle, low processing cost, strong adaptability, and unlimited size of the material.

Description

technical field [0001] The invention belongs to the technical field of preparation of amorphous alloy bulk materials, in particular to a preparation method of amorphous alloy bulk materials. Background technique [0002] Different from the crystal structure of traditional alloy materials, amorphous alloy atoms are disorderly arranged in three-dimensional space and present a glassy structure, which has excellent mechanical properties and corrosion resistance. Taking aluminum-based amorphous alloy as an example, its tensile strength exceeds 1000MPa, which is 2 to 3 times that of traditional aluminum alloy materials, and it also has the characteristics of light weight and good friction resistance. This makes amorphous alloy materials expected to replace some traditional metal materials in the fields of aviation, aerospace, industry, and national defense in the 21st century, showing broad application prospects. [0003] The critical cooling rate required to form amorphous alloy...

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Problems solved by technology

In recent years, researchers have begun to select some systems of amorphous alloys and atomize them to make powder raw materials, and try to prepare amorphous protective coatings by cold spraying on carbon steel and other material substrates, but the preparation of bulk amorphous alloy materials by cold spraying Related work has rarely been reported

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