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金属学报  1999 

AISI321不锈钢单周过载疲劳裂纹扩展的延迟效应

, PP. 403-406

Keywords: 不锈钢,疲劳裂纹扩展,过载

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Abstract:

在恒△K控制条件下研究了AISI321不锈钢在空气中不同过载比下的单周过载疲劳裂纹扩展延迟效应.结果表明过载比越大,延迟效应越显著,延迟效应作用距离远大过载塑性区尺寸.讨论了裂纹过载延迟效应机理,认为AISI321不锈钢过载后的疲劳裂纹扩展延迟行为主由塑性诱发裂纹闭合引起,并对其进行了定量描术.

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