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On the deformation mechanisms and strain rate sensitivity of a metastable β Ti–Nb alloy
Journal article   Peer reviewed

On the deformation mechanisms and strain rate sensitivity of a metastable β Ti–Nb alloy

Hongyi Zhan, Weidong Zeng, Gui Wang, Damon Kent and Matthew Dargusch
Scripta Materialia, Vol.107, pp.34-37
2015
url
https://doi.org/10.1016/j.scriptamat.2015.05.014View
Published Version

Abstract

metastable β titanium alloys high strain rates stress-induced martensitic transformation mechanical twinning
The Ti-25Nb-3Zr-3Mo-2Sn (wt.%) alloy deforms primarily by {3 3 2}〈1 1 3〉 twinning with limited {1 1 2}〈1 1 1〉 twinning and stress-induced phase transformations. For the Ti-25Nb-3Zr-3Mo-2Sn alloy, the yield stress and strain hardening rate are independent of strain rate. It is found that adiabatic heating induced by high strain rate deformations is insufficient to significantly modify the deformation modes. Also the twinning rate and morphologies of {3 3 2}〈1 1 3〉 twins are independent of strain rate (1 × 10-3-1 × 103 s-1) within the strain range in our experiments.

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Materials Science, Multidisciplinary
Metallurgy & Metallurgical Engineering
Nanoscience & Nanotechnology
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