Effect of micromorphology at the fatigue crack tip on the crack growth in electron beam welded Ti-6Al-4V joint
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- 作者：Junhui Tao ; Shubing Hu ; 187352581@qq.com" class="auth_mail" title="E-mail the corresponding author ; hushubing@163.com" class="auth_mail" title="E-mail the corresponding author ; Longbo Ji
- 关键词：Ti-6Al-4V ; Electron beam welding (EBW) ; Micromorphology ; Fatigue crack tip ; Fatigue crack growth
- 刊名：Materials Characterization
- 出版年：2016
- 出版时间：October 2016
- 年：2016
- 卷：120
- 期：Complete
- 页码：185-194
- 全文大小：3291 K
文摘
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Ti-6Al-4V welded joint exhibits different fatigue characteristics.
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The fatigue crack propagates along α/β boundaries in the BM.
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The fatigue crack propagates through α phases and martensite laths in the HAZ.
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The fatigue crack propagates along α/β boundaries and martensite laths in the FZ.
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Fatigue crack growth rate is fastest in the HAZ, less in the FZ, slowest in the BM.