ZHOU Yu ZHO U Yigang YU Hanqing Northwestern Polytechnical University
,
Xi'an
,
China
金属学报(英文版)
The cleavage rupture behaviour of the Ti alloy TC11 with various microstructures,i.e., equiaxed,duplex and interweaving,has been studied under fatigue-creep interaction at 520℃.It was found to be not only related to the rate of creep void initiating,but also control- led by the creep strain accumulation on holding under tension test and stress state at crack-tip.This seem to be combinably offected by both value of critic void initiating strain and parameter,V_(GC),of critic void growth.
关键词:
fatigue-creep interaction
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