Effect of stress ratio on fatigue crack growth of Ti40 alloy

被引：0
|
作者：
Wu Huan [1 ,2 ]
Zhao Yong-qing [1 ]
Zeng Wei-dong [2 ]
机构：
[1] Titanium Res Ctr, NW Inst Non Ferrous Met Res, Xian 710016, Peoples R China
[2] Northwestern Polytech Univ, Sch Mat Sci & Engn, Xian 710072, Peoples R China
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2007年 / 17卷
关键词：
Ti40; alloy; stress-ratio; fatigue crack growth; unified approach; trajectory map;
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The effect of stress ratio on fatigue crack growth (FCG) behavior of Ti40 alloy was analyzed. A unified approach, developed by VASUDEVAN and SADANANDA was used. The approach is based on the realization that fatigue requires two load parameters for unambiguous description. They are two fracture mechanics parameters: the maximum stress intensity factor K-max. and the stress intensity amplitude Delta K. The results show that there are two mechanisms controlling the FCG behavior of Ti40 alloy. The curves of the two mechanisms in trajectory map are similar. They deviate to K-max axial more strongly compared with other titanium alloy, which indicates that Ti40 alloy is more sensitive to environment.
引用
收藏
页码：S209 / S212
页数：4
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