Evaluation of Stored Energy from Microstructure of Multi-component Nanostructured Cu

作     者：Feng Yan Hongwang Zhang 

作者机构：Shenyang National Laboratory for Materials ScienceInstitute of Metal ResearchChinese Academy of SciencesShenyang 110016China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2012年第28卷第4期

页      面：289-293页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 082701[工学-核能科学与工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0827[工学-核科学与技术] 0702[理学-物理学] 

基　　金：the Danish National Research Foundation the National Natural Science Foundation of China (Grant No. 50911130230) The project was sponsored by MOST international S&Tproject (2010DFB54010)SRF for ROCS, SEM the Young Merit Scholar of Institute of Metal Research, Chinese Academy of Science, China 

主　　题：Stored energy Cu Dynamic plastic deformation Transmission electron microscopy 

摘      要：A polycrystalline Cu of 99.995% purity has been deformed by dynamic plastic deformation at liquid nitrogen temperature to a strain of 2.1 （LNT-DPD Cu）. Three distinct regions that are dominated by dislocation slip, shear banding and nanotwinning, form a multi-component nanostructure. The microstructure of each region has been quantified by transmission electron microscopy assisted by Kikuchi line analysis. Based on the structural parameters the stored energy of each region was evaluated, and the total energy can be assumed to be a linear additivity of that in each region weighted by the respective volume fraction. A microstructure based evaluation of the stored energy of multi-component nanostructure has been proposed.