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沿晶疲劳裂纹萌生行为的研究
刘蔚; 王中光; 夏月波
1988-05
Conference Name第五届全国断裂学术会议
Source Publication第五届全国断裂学术会议论文集
Conference Date1988-05
Conference Place桂林
Publication Place桂林
Publisher中国机械工程学会
Abstract为了研究纯金属疲劳过程中晶界及其结构的作用,选用应变退火技术制备的高纯铝复晶试样,在室温大气环境下做了应力控制的拉压疲劳实验,并经常中断实验以便在扫描电镜下观察表面形貌的发展。结果表明,所有疲劳裂纹都在晶界萌生。沿晶疲劳开裂是一多因素控制过程,如晶界结构有一定影响,滑移撞击晶界可致开裂,晶界滑移也可能导致裂纹萌生。Kim和Laird提出的晶界台阶机制不能满意地解释该实验结果。(本刊录)
description.department中国科学院金属研究所
Keyword疲劳断裂 裂纹形式 晶粒间界 晶界滑移
Funding Organization中国机械工程学会;中国力学学会
Language中文
Document Type会议论文
Identifierhttp://ir.imr.ac.cn/handle/321006/69740
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
刘蔚,王中光,夏月波. 沿晶疲劳裂纹萌生行为的研究[C]. 桂林:中国机械工程学会,1988.
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