MICRO-EXPERIMENTAL STUDY OF LARGE PLASTIC DEFORMATION FOR HIGH-PURITY POLYCRYSTALLINE ALUMINUM

作     者：仲政 杨卫 黄克智 

作者机构：Currently in the Department of Engineering MechanicsTongji University. Tsinghua UniversityBeijing 100084China 

出 版 物：《Acta Mechanica Sinica》 (力学学报（英文版）)

年 卷 期：1991年第7卷第4期

页      面：360-368页

核心收录：

学科分类：08[工学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：Sponsored by the National Natural Science Foundation of China and the Fok Ying-Tung Education Foundation 

主　　题：polycrystals large plastic deformation grain boundary sliding micromechanics grid method 

摘      要：This paper aims at revealing various micro- deformation characteristics, such as crystalline slip and grain boundary slide, which are recorded under scanning electronic microscope for high-purity aluminum tensile specimen at room temperature. These experimental data provide us direct evidence for shear localization near the grain boundary network via multi- directional grain boundary slide. The nonuniform deformation induced in the grain interiors would have decisive effect on the plastic flow and failure of polycrystalline materials.