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首页> 外文期刊>Engineering Fracture Mechanics >Experimental study of the strain-strengthening effect on the mixed mode notch-crack fatigue propagation in austenitic stainless steel 06Cr19Ni10
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Experimental study of the strain-strengthening effect on the mixed mode notch-crack fatigue propagation in austenitic stainless steel 06Cr19Ni10

机译：奥氏体不锈钢06Cr19Ni10的应变强化对混合模式缺口裂纹疲劳扩展的实验研究

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摘要

Experimental studies on I + II mixed mode notch-crack fatigue propagation in austenitic stainless steel 06Cr19Ni10 were carried out with consideration of the strain-strengthening effects. It is found that after initiating from the notch-crack tip, the new crack changes from I + II mixed mode to Mode I. Strain-strengthening has no effects on the crack growth path, but has some effects on the crack growth rates. Microstructure analysis indicates that total volume fraction of martensite transformed from the original austenitic microstructure increases with increasing the strain-strengthening. However, the moderate volume fraction of martensitic transformation seems more beneficial to reduce the crack growth rate. (C) 2014 Elsevier Ltd. All rights reserved.
机译：考虑到应变强化效应，对奥氏体不锈钢06Cr19Ni10中的I + II混合模式缺口裂纹疲劳扩展进行了实验研究。发现从缺口裂纹尖端开始后，新裂纹从I + II混合模式变为I模式。应变强化对裂纹扩展路径没有影响，但对裂纹扩展速率有影响。显微组织分析表明，从原始奥氏体显微组织转变而来的马氏体总体积分数随应变强度的增加而增加。然而，适度的马氏体相变体积分数似乎对降低裂纹扩展速率更有利。 （C）2014 Elsevier Ltd.保留所有权利。

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