CHEN Zheng Northwestern Polytechnical University
,
Xi′an
,
China Lab.No.401
,
Northwestern Polytechnical University
,
Xi′an 710072
金属学报(英文版)
Threshold of fatigue for short through cracks for Al-Li alloy 8090 was evaluated to be lower than that of long cracks,and to decrease with the shortening of the crack length.The correla- tion among the threshold,crack wake,and crack tip shielding of the short fatigue cracks was discussed.The super demarcation length and lowest theoretical threshold of short through fa- tigue cracks were presented.
关键词:
Al-Li alloy
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