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题名: Microstructure-Dependent Local Fatigue Cracking Resistance of Bimodal Ti-6Al-4V Alloys
作者: Zeng, LR;  Lei, LM;  Yang, J;  Luo, XM;  Zhang, GP
发表日期: 2018-4-1
摘要: The fatigue crack growth behavior of the bimodal Ti-6Al-4V alloys with two different volume fractions of the primary phase (alpha(p)) of 76 and 36% is investigated by the in situ testing technique. The experimental results show that the crack growth rate of the alpha(p) = 36% Ti-6Al-4V alloy is lower than that of the alpha(p) = 76% one. The local fatigue crack growth rate is evidently decreased by the various boundaries including alpha(p) grain boundaries, boundaries between the alpha(p) phase and basketweave microstructure, and alpha/beta lamellar interfaces. A criterion associated with the boundary characteristics is obtained to evaluate the grain boundary resistance to the fatigue crack growth in the engineering alloys.
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Recommended Citation:
Zeng, LR,Lei, LM,Yang, J,et al. Microstructure-dependent Local Fatigue Cracking Resistance Of Bimodal Ti-6al-4v Alloys[J]. Advanced Engineering Materials,2018,20(4):-.

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