Screw-rotation twinning through helical movement of triple-partials

Pan Liu; Kui Du; Jianxin Zhang; Lihua Wang; Yonghai Yue; Evan Ma; Yuefei Zhang; Ze Zhang; Mingwei Chen; Xiaodong Han

doi:10.1063/1.4752747

Screw-rotation twinning through helical movement of triple-partials

Pan Liu
, Kui Du
, Jianxin Zhang
, Lihua Wang
, Yonghai Yue
, Evan Ma
, Yuefei Zhang
, Ze Zhang
, Mingwei Chen
, Xiaodong Han

Beijing University of Technology
CAS - Institute of Metal Research
Shandong University
Johns Hopkins University
Zhejiang University
Tohoku University

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

18 Scopus citations

Abstract

By in situ uniaxial-tensile tests with dynamic and atomic scale observation, we report the quantitative investigation of strain-induced deformation-twinning process through incoherent twin boundary propagation in nanocrystalline Au. The consecutive and quantitative strain maps revealed that a strong compressive strain, up to 5.8%, was formed. A screw-rotation twinning mechanism by consecutive and collective screw-rotations of triple-partials along a [111] screw-axis is proposed. This twin generates a macro-strain of 0.707, same as the conventional shear twins, but in a helical manner.

Original language	English
Article number	121901
Journal	Applied Physics Letters
Volume	101
Issue number	12
DOIs	https://doi.org/10.1063/1.4752747
State	Published - 17 Sep 2012
Externally published	Yes

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10.1063/1.4752747

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title = "Screw-rotation twinning through helical movement of triple-partials",

abstract = "By in situ uniaxial-tensile tests with dynamic and atomic scale observation, we report the quantitative investigation of strain-induced deformation-twinning process through incoherent twin boundary propagation in nanocrystalline Au. The consecutive and quantitative strain maps revealed that a strong compressive strain, up to 5.8\%, was formed. A screw-rotation twinning mechanism by consecutive and collective screw-rotations of triple-partials along a [111] screw-axis is proposed. This twin generates a macro-strain of 0.707, same as the conventional shear twins, but in a helical manner.",

author = "Pan Liu and Kui Du and Jianxin Zhang and Lihua Wang and Yonghai Yue and Evan Ma and Yuefei Zhang and Ze Zhang and Mingwei Chen and Xiaodong Han",

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T1 - Screw-rotation twinning through helical movement of triple-partials

AU - Liu, Pan

AU - Du, Kui

AU - Zhang, Jianxin

AU - Wang, Lihua

AU - Yue, Yonghai

AU - Ma, Evan

AU - Zhang, Yuefei

AU - Zhang, Ze

AU - Chen, Mingwei

AU - Han, Xiaodong

PY - 2012/9/17

Y1 - 2012/9/17

N2 - By in situ uniaxial-tensile tests with dynamic and atomic scale observation, we report the quantitative investigation of strain-induced deformation-twinning process through incoherent twin boundary propagation in nanocrystalline Au. The consecutive and quantitative strain maps revealed that a strong compressive strain, up to 5.8%, was formed. A screw-rotation twinning mechanism by consecutive and collective screw-rotations of triple-partials along a [111] screw-axis is proposed. This twin generates a macro-strain of 0.707, same as the conventional shear twins, but in a helical manner.

AB - By in situ uniaxial-tensile tests with dynamic and atomic scale observation, we report the quantitative investigation of strain-induced deformation-twinning process through incoherent twin boundary propagation in nanocrystalline Au. The consecutive and quantitative strain maps revealed that a strong compressive strain, up to 5.8%, was formed. A screw-rotation twinning mechanism by consecutive and collective screw-rotations of triple-partials along a [111] screw-axis is proposed. This twin generates a macro-strain of 0.707, same as the conventional shear twins, but in a helical manner.

UR - https://www.scopus.com/pages/publications/84866841503

U2 - 10.1063/1.4752747

DO - 10.1063/1.4752747

M3 - 文章

AN - SCOPUS:84866841503

SN - 0003-6951

VL - 101

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 12

M1 - 121901

ER -

Screw-rotation twinning through helical movement of triple-partials

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