Effect of microstructure on high cycle fatigue behavior of Ti-5Al-5Mo-5V-3Cr-1Zr titanium alloy
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- 作者：Chaowen Huanga ; b ; huangchaowen318@163.com" class="auth_mail" title="E-mail the corresponding author ; Yongqing Zhaoa ; b ; trc@c-nin.com" class="auth_mail" title="E-mail the corresponding author ; Shewei Xinb ; Changsheng Tanc ; Wei Zhoub ; Qian Lib ; Weidong Zenga
- 关键词：Ti-55531 titanium alloy ; Microstructure ; High-cycle fatigue ; Crack initiation ; Crack propagation
- 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：30-40
- 全文大小：5105 K
文摘
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Both LM and BM present outstanding HCF strength, 652 MPa and 656 MPa, respectively.
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Prismatic slip lines, dislocation tangles and twins can be found in fatigued specimens.
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Microcracks mainly initiate at GB α films or at αs/βr interphases in LM.
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Microcracks primarily nucleate at αp/βtrans interfaces and at αp particles interiors in BM.
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Fatigue cracks growth with a rough path results from fine and local basket-weave αs lamellae.