Novel deformation twinning system in a cold rolled high-strength metastable-β Ti-5Al-5V-5Mo-3Cr-0.5Fe alloy

Stoichko Antonov; Zachary Kloenne; Yipeng Gao; Dong Wang; Qiang Feng; Yunzhi Wang; Hamish L. Fraser; Yufeng Zheng

doi:10.1016/j.mtla.2020.100614

Novel deformation twinning system in a cold rolled high-strength metastable-β Ti-5Al-5V-5Mo-3Cr-0.5Fe alloy

Stoichko Antonov
, Zachary Kloenne
, Yipeng Gao
, Dong Wang
, Qiang Feng
, Yunzhi Wang
, Hamish L. Fraser
, Yufeng Zheng

Frontier Institute of Science and Technology

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

28 Scopus citations

Abstract

A high-strength metastable β-titanium alloy, Ti-5Al-5Mo-5V-3Cr-0.5Fe (wt.%) was cold rolled at room temperature and characterized using scanning and transmission electron microscopy. A novel {10 9 3}<331>_β type deformation twining mode (Σ19a) is reported for the first time, and crystallographic analysis was carried-out to elucidate the origin of such high-index deformation twins. The initially β-solutionized alloy contains nano-scale ω phase, which is also subsequently distributed within the twins. Additionally, a thin nano-scale ω layer forms along the twin boundaries, and two variants of α″ martensite phase form inside the deformation twins. The current work opens up new prospects for improving the ductility of high-strength Ti alloys by inducing the twinning and transformation induced plasticity effects.

Original language	English
Article number	100614
Journal	Materialia
Volume	9
DOIs	https://doi.org/10.1016/j.mtla.2020.100614
State	Published - Mar 2020

Keywords

Deformation twinning
Stress-induced α″ martensite
Titanium alloys
{10 9 3}<331>
ω phase

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10.1016/j.mtla.2020.100614

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@article{dfd207bcc26145d69a5a6f087382d65d,

title = "Novel deformation twinning system in a cold rolled high-strength metastable-β Ti-5Al-5V-5Mo-3Cr-0.5Fe alloy",

abstract = "A high-strength metastable β-titanium alloy, Ti-5Al-5Mo-5V-3Cr-0.5Fe (wt.\%) was cold rolled at room temperature and characterized using scanning and transmission electron microscopy. A novel \{10 9 3\}<331>β type deformation twining mode (Σ19a) is reported for the first time, and crystallographic analysis was carried-out to elucidate the origin of such high-index deformation twins. The initially β-solutionized alloy contains nano-scale ω phase, which is also subsequently distributed within the twins. Additionally, a thin nano-scale ω layer forms along the twin boundaries, and two variants of α″ martensite phase form inside the deformation twins. The current work opens up new prospects for improving the ductility of high-strength Ti alloys by inducing the twinning and transformation induced plasticity effects.",

keywords = "Deformation twinning, Stress-induced α″ martensite, Titanium alloys, \{10 9 3\}<331>, ω phase",

author = "Stoichko Antonov and Zachary Kloenne and Yipeng Gao and Dong Wang and Qiang Feng and Yunzhi Wang and Fraser, \{Hamish L.\} and Yufeng Zheng",

note = "Publisher Copyright: {\textcopyright} 2020",

year = "2020",

month = mar,

doi = "10.1016/j.mtla.2020.100614",

language = "英语",

volume = "9",

journal = "Materialia",

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TY - JOUR

T1 - Novel deformation twinning system in a cold rolled high-strength metastable-β Ti-5Al-5V-5Mo-3Cr-0.5Fe alloy

AU - Antonov, Stoichko

AU - Kloenne, Zachary

AU - Gao, Yipeng

AU - Wang, Dong

AU - Feng, Qiang

AU - Wang, Yunzhi

AU - Fraser, Hamish L.

AU - Zheng, Yufeng

PY - 2020/3

Y1 - 2020/3

N2 - A high-strength metastable β-titanium alloy, Ti-5Al-5Mo-5V-3Cr-0.5Fe (wt.%) was cold rolled at room temperature and characterized using scanning and transmission electron microscopy. A novel {10 9 3}<331>β type deformation twining mode (Σ19a) is reported for the first time, and crystallographic analysis was carried-out to elucidate the origin of such high-index deformation twins. The initially β-solutionized alloy contains nano-scale ω phase, which is also subsequently distributed within the twins. Additionally, a thin nano-scale ω layer forms along the twin boundaries, and two variants of α″ martensite phase form inside the deformation twins. The current work opens up new prospects for improving the ductility of high-strength Ti alloys by inducing the twinning and transformation induced plasticity effects.

AB - A high-strength metastable β-titanium alloy, Ti-5Al-5Mo-5V-3Cr-0.5Fe (wt.%) was cold rolled at room temperature and characterized using scanning and transmission electron microscopy. A novel {10 9 3}<331>β type deformation twining mode (Σ19a) is reported for the first time, and crystallographic analysis was carried-out to elucidate the origin of such high-index deformation twins. The initially β-solutionized alloy contains nano-scale ω phase, which is also subsequently distributed within the twins. Additionally, a thin nano-scale ω layer forms along the twin boundaries, and two variants of α″ martensite phase form inside the deformation twins. The current work opens up new prospects for improving the ductility of high-strength Ti alloys by inducing the twinning and transformation induced plasticity effects.

KW - Deformation twinning

KW - Stress-induced α″ martensite

KW - Titanium alloys

KW - {10 9 3}<331>

KW - ω phase

UR - https://www.scopus.com/pages/publications/85079369477

U2 - 10.1016/j.mtla.2020.100614

DO - 10.1016/j.mtla.2020.100614

M3 - 文章

AN - SCOPUS:85079369477

SN - 2589-1529

VL - 9

JO - Materialia

JF - Materialia

M1 - 100614

ER -

Novel deformation twinning system in a cold rolled high-strength metastable-β Ti-5Al-5V-5Mo-3Cr-0.5Fe alloy

Abstract

Keywords

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