Research on High Temperature Low Cycle Fatigue Crack Propagation of 2.25Cr-1Mo Steel under Complex Stress State

被引：0
|
作者：
Zhang, Wenxiao [1 ]
Gao, Guodong [1 ]
Mu, Guangyu [1 ]
机构：
[1] Dalian Ocean Univ, Coll Mech Engn, Dalian, Peoples R China
来源：
NATURAL RESOURCES AND SUSTAINABLE DEVELOPMENT, PTS 1-3 | 2012年 / 361-363卷
关键词：
2.25Cr-1Mo; Low-cycle Fatigue; Crack Propagation; Equivalent; J-integral Ranges;
D O I：
10.4028/www.scientific.net/AMR.361-363.1422
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The crack propagation law of 2.25Cr-1Mo steel with notched cylinder was researched under high temperature low cycle fatigue. The crack propagation life was viewed by fatigue experiment and the equivalent stress-strain on the crack tip was calculated by the ANSYS. The equivalent J-integral range which was computed by equivalent elastic and plastic strain ranges were employed to denote the fatigue crack propagation rate. The results showed that crack propagation law of this material under complex stress state can be characterized by equivalent J-integral ranges and the relation between da/dN and Delta J(f) is not influenced by the type of notch and the load strain range.
引用
收藏
页码：1422 / 1425
页数：4
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