过载对疲劳裂纹低速扩展的影响

IMECH-IR > 力学所知识产出(1956-2008)

	过载对疲劳裂纹低速扩展的影响
	邓蓉英
Source Publication	金属学报
	1987
Volume	23 Issue:5 Pages:A421-A424
ISSN	0412-1961
Abstract	本文研究一次拉伸型过载对奥氏体不锈钢疲劳裂紋近门槛值扩展的影响.试验结果表明,过载对门槛值的影响和过载比P_0/P_(max)的大小有关;P_0/P_(max)>1.4时,门槛值随着过载比增加而线性提高.提出了裂纹扩展速率减缓和门槛值提高的主导原因是过載大大促进裂纹顶端闭合,即塑性诱发闭合和断裂表面粗糙诱发闭合.
Keyword	门槛值过载疲劳裂纹扩展裂纹扩展速率裂纹张开奥氏体不锈钢裂纹扩展量塑性区循环载荷
Language	中文
Document Type	期刊论文
Identifier	http://dspace.imech.ac.cn/handle/311007/36990
Collection	力学所知识产出(1956-2008)
Corresponding Author	邓蓉英
Recommended Citation GB/T 7714	邓蓉英. 过载对疲劳裂纹低速扩展的影响[J]. 金属学报,1987,23,5,:A421-A424.
APA	邓蓉英.(1987).过载对疲劳裂纹低速扩展的影响.金属学报,23(5),A421-A424.
MLA	邓蓉英."过载对疲劳裂纹低速扩展的影响".金属学报 23.5(1987):A421-A424.

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