Hierarchical {332}<113> twinning in a metastable β Ti-alloy showing tolerance to strain localization

Jinyong Zhang; Yangyang Fu; Yijin Wu; Bingnan Qian; Zheng Chen; Akihisa Inoue; Yuan Wu; Yang Yang; Fan Sun; Ju Li; Frédéric Prima

doi:10.1080/21663831.2020.1745920

Hierarchical {332}<113> twinning in a metastable β Ti-alloy showing tolerance to strain localization

Jinyong Zhang, Yangyang Fu, Yijin Wu, Bingnan Qian, Zheng Chen, Akihisa Inoue, Yuan Wu, Yang Yang, Fan Sun, Ju Li, Frédéric Prima

Engineering Science and Mechanics

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

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Abstract

A hierarchical {332}<113> twinning system is studied in a metastable beta Ti-12Mo-10Zr (wt%) alloy, which shows strong twinning-induced plasticity (TWIP) effect due to a three-level twinning mechanism. In-situ digital image correlation (DIC) indicates a good tolerance to strain localization until ε_max=0.4 thanks to TWIP hardening effect. The local shear misfit due to the intersection between the matrix slip bands and the primary twin boundaries is accommodated by the formation of secondary and tertiary sub-twinning structures. The strain accommodation postpones crack nucleation at the slip-twin intersections, contributing to the high tolerance of the strain localization.

Original language	English (US)
Pages (from-to)	247-253
Number of pages	7
Journal	Materials Research Letters
Volume	8
Issue number	7
DOIs	https://doi.org/10.1080/21663831.2020.1745920
State	Published - Jul 2 2020

All Science Journal Classification (ASJC) codes

General Materials Science

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10.1080/21663831.2020.1745920

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title = "Hierarchical {332}<113> twinning in a metastable β Ti-alloy showing tolerance to strain localization",

abstract = "A hierarchical {332}<113> twinning system is studied in a metastable beta Ti-12Mo-10Zr (wt%) alloy, which shows strong twinning-induced plasticity (TWIP) effect due to a three-level twinning mechanism. In-situ digital image correlation (DIC) indicates a good tolerance to strain localization until εmax=0.4 thanks to TWIP hardening effect. The local shear misfit due to the intersection between the matrix slip bands and the primary twin boundaries is accommodated by the formation of secondary and tertiary sub-twinning structures. The strain accommodation postpones crack nucleation at the slip-twin intersections, contributing to the high tolerance of the strain localization.",

author = "Jinyong Zhang and Yangyang Fu and Yijin Wu and Bingnan Qian and Zheng Chen and Akihisa Inoue and Yuan Wu and Yang Yang and Fan Sun and Ju Li and Fr{\'e}d{\'e}ric Prima",

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doi = "10.1080/21663831.2020.1745920",

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T1 - Hierarchical {332}<113> twinning in a metastable β Ti-alloy showing tolerance to strain localization

AU - Zhang, Jinyong

AU - Fu, Yangyang

AU - Wu, Yijin

AU - Qian, Bingnan

AU - Chen, Zheng

AU - Inoue, Akihisa

AU - Wu, Yuan

AU - Yang, Yang

AU - Sun, Fan

AU - Li, Ju

AU - Prima, Frédéric

PY - 2020/7/2

Y1 - 2020/7/2

N2 - A hierarchical {332}<113> twinning system is studied in a metastable beta Ti-12Mo-10Zr (wt%) alloy, which shows strong twinning-induced plasticity (TWIP) effect due to a three-level twinning mechanism. In-situ digital image correlation (DIC) indicates a good tolerance to strain localization until εmax=0.4 thanks to TWIP hardening effect. The local shear misfit due to the intersection between the matrix slip bands and the primary twin boundaries is accommodated by the formation of secondary and tertiary sub-twinning structures. The strain accommodation postpones crack nucleation at the slip-twin intersections, contributing to the high tolerance of the strain localization.

AB - A hierarchical {332}<113> twinning system is studied in a metastable beta Ti-12Mo-10Zr (wt%) alloy, which shows strong twinning-induced plasticity (TWIP) effect due to a three-level twinning mechanism. In-situ digital image correlation (DIC) indicates a good tolerance to strain localization until εmax=0.4 thanks to TWIP hardening effect. The local shear misfit due to the intersection between the matrix slip bands and the primary twin boundaries is accommodated by the formation of secondary and tertiary sub-twinning structures. The strain accommodation postpones crack nucleation at the slip-twin intersections, contributing to the high tolerance of the strain localization.

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JO - Materials Research Letters

JF - Materials Research Letters

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ER -

Hierarchical {332}<113> twinning in a metastable β Ti-alloy showing tolerance to strain localization

Abstract

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