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《Bulletin of National Science Foundation of China》 1998-02
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EFFECTS OF RAPID TRANSIENT HEAT TRANSFER ON PROPERTIES AND CRYSTAL STRUCTURE OF MATERIALS

Liu Dengying (Institute of Engineering Thermophysics, CAS, Beijing 100080) Yang Yuansheng (Institute of Metal Research, CAS, Shenyang 110015)  
Taking the rapid solidification of metals as an example, this paper outlines the important effects of rapid transient heat transfer on properties and crystal structure of materials. The main reason for the great change in the properties of materials is the nonequilibrium phase change caused by extreme heat transfer. The extreme heat transfer characteristics in short-pulse high flux heating and rapid solidification of metals are analyzed. which is mainly shown as nonequilibrium heat transfer process. In order to study the mechanism of effects of rapid transient heat transfer, this nonequilibrium heat transfer process must be combined with the nonequilibrium phase change of materials. Finally, the paper proposes several key projects that need to be further studied in future.
【CateGory Index】: TB30
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