Microscopic Characteristics of Damage Evolution in Ultrapure Aluminum under Tensile Loading
Microscopic Characteristics of Damage Evolution in Ultrapure Aluminum under Tensile Loading作者机构：School of Science Wuhan University of Technology Wuhan 430070 Laboratory for Shock Wave and Detonation Physics Research Institute of Fluid Physics China Academy of Engineering Physics Mianyang 621900
出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)
年 卷 期：2011年第28卷第1期
页 面：153-155页
核心收录：
学科分类：0820[工学-石油与天然气工程] 082001[工学-油气井工程] 08[工学] 080102[工学-固体力学] 0801[工学-力学（可授工学、理学学位）]
基 金：Supported by the National Natural Science Foundation of China the Fundamental Research Funds for the Central Universities and the National Natural Science Foundation of China under Grant Nos 10876014 2010-1a-017and 11072119
主 题：Condensed matter: structural mechanical & thermal
摘 要：A series of plate-experiments are carried out to acquire ultrapure aluminum （purity,. 99.999%） samples with damage. Based on the metallographic of all ＂soft-recovered＂ samples, the characteristics of damage evolution and spallation damage mechanism in ultrapure aluminum are analyzed in detail. Results show that the damage will increase regularly with increasing loading＂ strength. Most of voids appear in the grain boundary and grow alone under tensile loading＂ before they coalesce each other to form big irregular voids. These analysis results are helpful to understand the evolution process of ductile metal dynamic fracture and establish the damage evolution model.
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