Comparative study on small fatigue crack propagation between Fe-30Mn-3Si-3Al and Fe-23Mn-0.5C twinning-induced plasticity steels: Aspects of non-propagation of small fatigue cracks
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- 作者：Motomichi Koyamaa ; koyama@mech.kyushu-u.ac.jp" class="auth_mail" title="E-mail the corresponding author ; Yusuke Yamamuraa ; Rinqing Chea ; Takahiro Sawaguchib ; Kaneaki Tsuzakia ; Hiroshi Noguchia
- 关键词：Non-propagation of small fatigue cracks ; Dynamic strain aging ; Austenitic steel ; High cycle fatigue ; Optical microscopy
- 刊名：International Journal of Fatigue
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：94
- 期：part_P1
- 页码：1-5
- 全文大小：1368 K
文摘
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A Fe-30Mn-3Si-3Al TWIP steel did not show fatigue crack non-propagation at the fatigue limit.
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A Fe-23Mn-0.5C TWIP steel showed fatigue crack non-propagation.
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The crack non-propagation of the Fe-Mn-C steel probably because of dynamic strain aging.
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The dynamic strain aging seems to assist fatigue crack initiation.