形变晶体的位错结构

形变晶体的位错结构 DISLOCATION STRUCTURES IN DEFORMED CRYSTALS 王仁卉 Wang Renhui 1 2 first-author 路钢华 Lu Ganghua and Zou Huamin 1 2 邹化民 1 2 Department of physics wuhan university Department of physics wuhan university Department of physics, wuhan university Department of physics, wuhan university Department of physics wuhan university Department of physics wuhan university 本文综述了我们近年在形变晶体的位错结构研究方面的主要成果,即:（1）发展了用透射电子显微术区分Ⅱ～Ⅵ族半导体中α与β位错和鉴定小位错圈的方法;发展了用扫描电镜无损定量测定金属在形变过程中表面浮凸的演变的方法,探讨了用会聚束电子衍射研究位错产生的应力场的方法。（2）以铜、铝、α-Fe为典型代表,揭示了退火金属和预形变金属在循环形变过程中位错结构演变的规律。（3）实验分析并理论阐明了Ⅱ～Ⅵ族半导体中α和β两类位错的分解宽度及运动规律。 This paper reviews our recent’ main results in studies of dislocation structures in deformed crystals:（1）Methcds for identifying α and β types dislocations in Ⅱ-Ⅵ semi-conductors and small dislocation loops using transmission electron micrescopy,and methods for quantitatively measuring metal surface profile and its evolution during deformation using scanning electron microscopy were developed. Moreover, methods for study of internal stress field of dislocations using convergent beam electron diffraction technique were explored. （2）With copper, aluminum and α-Fe as typical representatives the development processes of dislocation structures of annealed and predeformed metals during cyclic deformation were clarified. （3）The motion and the partial separations of α and β dislocations in Ⅱ-Ⅵ semiconductors were observed experimentally and explained theoretically. 位错结构 形变 循环形变 透射电子显微术 会聚束电子衍射 dislocation Strtteture deformation cyclic deformation Tran-smission electron microscopy Convergent beam electron diffraction 中国科学院科学基金 1988-02-01 2021-04-01 2