Effect of stress ratio on fatigue crack growth of Ti40 alloy
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 Kmax and the stress intensity amplitude 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 Kmax axial more strongly compared with other titanium alloy,which indicates that Ti40 alloy is more sensitive to environment.
Ti40 alloy stress-ratio fatigue crack growth unified approach trajectory map
WU Huan ZHAO Yong-qing ZENG Wei-dong
Titanium Research Center,Northwest Institute for Non-ferrous Metal Research,Xi’an 710016,China;Schoo Titanium Research Center,Northwest Institute for Non-ferrous Metal Research,Xi’an 710016,China School of Materials Science and Engineering,Northwestern Polytechnical University,Xi’an 710072,China
国际会议
2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)
长沙
英文
2007-11-28（万方平台首次上网日期，不代表论文的发表时间）