Introduction of the normalized damage function for the creep-fatigue life prediction of austenitic stainless steels

摘要：

　　For the austenitic stainless steels, it is well known that grain boundary cracking due to the cavitation is one of the most detrimental degradation processes for the reduction of the creep-fatigue life at high temperatures.A new unified damage function based on a model of the grain boundary cavity formation by fatigue and growth by the creep effect for the creep-fatigue life prediction is introduced.This unique normalized damage function includes the cavity nucleation process by fatigue and cavity growth process by creep deformation under various combinations of temperature, stress, plastic strain range, strain rate and hold time.

关键词： Austenitic stainless steel Creep Fatigue Life prediction Normalized damage function

作者: Soo Woo Nam

作者单位: Department of Materials Science,Korea Advanced Institute of Science & Technology (KAIST),Korea

会议类型: 国际会议

会议名称: 2015 International Symposium on Structural Integrity(2015年国际结构完整性学术会议)

会议地点: 沈阳

会议语种:英文

页码: 17-23

在线出版日期: 2015-05-16（万方平台首次上网日期，不代表论文的发表时间）