非晶合金激波晶化的微观动力学机制  

Microdynamical dynamic mechanism of shock wave crystallization of amorphous alloys

作　　者：刘应开[1] 侯德东[2] 刘佐权[3] 

机构地区：[1]云南师范大学物理系,云南昆明650092 [2]云南师范大学教务处,云南昆明650092 [3]云南大学物理系,云南昆明650091

出　　处：《云南师范大学学报（自然科学版）》2000年第1期31-34,共4页Journal of Yunnan Normal University:Natural Sciences Edition

基　　金：国家自然科学基金

摘　　要：从非晶的有序原子集团(ordered cluster)和位错模型出发,利用位错动力学讨论了在激波作用下,非晶合金晶化为纳米晶的过程。激波与cluster周围局域应力场的相互作用,使cluster旋转,类液区cluster、类晶cluster切变沉积到有序原子集团,在μs内形成微晶。Based on the orderd cluster and dislocation, Crystallization of metal glass to nanocrystalline under shock wave is discussed by using dislocation dynamics. The interaction between shock wave and local stress fields in metal glass makes cluster rotate and the inter cluster and other cluster deposit onto the cluster. Clusters grow up and become grains within μs. The shock wave experiment is fitted with the dislocation dynamics theory considerately.

关 键 词：位错动力学 非晶态合金 激波晶化 微观动力学 

分 类 号：TG139.8[一般工业技术—材料科学与工程]