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

Hongyi Zhan; Weidong Zeng; Gui Wang; Damon Kent; Matthew Dargusch

doi:10.1016/j.scriptamat.2015.05.014

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

Hongyi Zhan, Weidong Zeng, Gui Wang, Damon Kent, Matthew Dargusch

School of Materials Sience and Engineering

Research output: Contribution to journal › Article › peer-review

56 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	34-37
Number of pages	4
Journal	Scripta Materialia
Volume	107
DOIs	https://doi.org/10.1016/j.scriptamat.2015.05.014
State	Published - 1 Oct 2015

Keywords

High strain rates
Mechanical twinning
Metastable β titanium alloys
Stress-induced martensitic transformation

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10.1016/j.scriptamat.2015.05.014

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abstract = "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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T1 - On the deformation mechanisms and strain rate sensitivity of a metastable β Ti-Nb alloy

AU - Zhan, Hongyi

AU - Zeng, Weidong

AU - Wang, Gui

AU - Kent, Damon

AU - Dargusch, Matthew

PY - 2015/10/1

Y1 - 2015/10/1

N2 - 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.

AB - 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.

KW - High strain rates

KW - Mechanical twinning

KW - Metastable β titanium alloys

KW - Stress-induced martensitic transformation

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DO - 10.1016/j.scriptamat.2015.05.014

M3 - 文章

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VL - 107

SP - 34

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JO - Scripta Materialia

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

Abstract

Keywords

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