Very-high-cycle fatigue behavior of a structural steel with and without induced surface defects
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- 作者：Qingqing Jiang ; Chengqi Sun ; Xiaolong Liu ; Youshi Hong ; hongys@imech.ac.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：Very-high-cycle fatigue ; Surface defect ; Fine-granular-area ; Crack initiation ; Structural steel
- 刊名：International Journal of Fatigue
- 出版年：2016
- 出版时间：December 2016
- 年：2016
- 卷：93
- 期：part_P2
- 页码：352-362
- 全文大小：3394 K
文摘
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Induced surface defects reduced HCF and VHCF strength by 40% for a structural steel.
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Strength degradation by defect (size 100–300 μm) was described by available models.
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FGA in VHCF crack initiation region from inclusion was a layer of nanograins.
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No evidence of grain refinement in VHCF crack initiation at GB or at surface defect.