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The metallic glass, also called amorphous alloys, are hot metal melt in the case of instantaneous quench, due to the atomic late re-arranged in a regular crystal, so that no regular arrangement of atoms in the liquid state, frozen down and the formation of and at a certain temperature range, and this state remains relatively stable. Due to its structure and is very similar to the glass is a metastable structure, having a short-range order, the long-range disorder characterized so Caibei called metallic glass. It has many ordinary crystalline alloy material do not have excellent mechanical, chemical and physical properties due to special micro-structure of the metallic glass, machinery, telecommunications, aerospace, automotive industry, chemical industry, sports equipment and even defense and military on a wide range of potential applications. Superplastic forming capacity more than the cold temperature interval can be micro parts and micro-mold forming complex shaped parts, near net shape. In recent years, the scientific community and the materials engineering of bulk amorphous alloys studied extensively, and has made great progress, but it is still in the research phase of the new material, there are many problems in the theory and practical application to be resolved, mainly reflected in the following aspects: less than 1 bulk metallic glass forming ability of understanding the nature, do not have a mature theoretical guidance on how to find a higher glass-forming ability of the alloy constituents; 2 mature physical model to explain the short-range order of metallic glass alloy, long-range disordered structure and elements of the interaction between the form; 3 metallic glass alloy theoretical understanding of the glass transition and crystallization process remains to be further studied; 4 how to the size of the bulk metallic glass has done more to reduce the preparation requirements, industrialized mass production: 5 metallic glass alloys applied research, development potential of the metallic glass alloy. Cu-based bulk metallic glass systems developed in recent years with low material cost, high glass-forming ability and excellent mechanical properties, etc., copper-based bulk metallic glass is bound to fit as a new engineering materials. According to recent reports, Cu-Zr binary system has a stunning glass-forming ability, which both have extremely important implications for theoretical research and industrial applications of bulk metallic glass. This paper a comprehensive overview of the amorphous metallic glass alloy physics and research and development process, summed up the special preparation of the alloy, excellent performance and prospects, and introduced advanced testing methods for the study of such a special structure of the alloy.
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