New role of screw dislocation in twin lamella during deformation: An in situ TEM study at the atomic scale

Zongde Kou; Yanqing Yang; Lixia Yang; Bin Huang; Yanxia Chen; Xian Luo

doi:10.1016/j.msea.2018.05.053

New role of screw dislocation in twin lamella during deformation: An in situ TEM study at the atomic scale

Zongde Kou, Yanqing Yang, Lixia Yang, Bin Huang, Yanxia Chen, Xian Luo

School of Materials Sience and Engineering

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

8 Scopus citations

Abstract

Two dynamic processes were revealed in Cu by in situ tensile tests at the atomic scale: a lattice screw dislocation forming by the combination of two twinning dislocations; and two 60° full dislocations evolving from an extended screw dislocation. The results indicate that screw dislocation can trigger the transition of dislocation slip mode by its formation and dissociation, and also nucleate non-screw dislocations.

Original language	English
Pages (from-to)	125-129
Number of pages	5
Journal	Materials Science and Engineering: A
Volume	729
DOIs	https://doi.org/10.1016/j.msea.2018.05.053
State	Published - 27 Jun 2018

Keywords

Deformation
In situ HRTEM
Screw dislocation
Slip mode
Twin

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10.1016/j.msea.2018.05.053

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title = "New role of screw dislocation in twin lamella during deformation: An in situ TEM study at the atomic scale",

abstract = "Two dynamic processes were revealed in Cu by in situ tensile tests at the atomic scale: a lattice screw dislocation forming by the combination of two twinning dislocations; and two 60° full dislocations evolving from an extended screw dislocation. The results indicate that screw dislocation can trigger the transition of dislocation slip mode by its formation and dissociation, and also nucleate non-screw dislocations.",

keywords = "Deformation, In situ HRTEM, Screw dislocation, Slip mode, Twin",

author = "Zongde Kou and Yanqing Yang and Lixia Yang and Bin Huang and Yanxia Chen and Xian Luo",

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T1 - New role of screw dislocation in twin lamella during deformation

T2 - An in situ TEM study at the atomic scale

AU - Kou, Zongde

AU - Yang, Yanqing

AU - Yang, Lixia

AU - Huang, Bin

AU - Chen, Yanxia

AU - Luo, Xian

PY - 2018/6/27

Y1 - 2018/6/27

N2 - Two dynamic processes were revealed in Cu by in situ tensile tests at the atomic scale: a lattice screw dislocation forming by the combination of two twinning dislocations; and two 60° full dislocations evolving from an extended screw dislocation. The results indicate that screw dislocation can trigger the transition of dislocation slip mode by its formation and dissociation, and also nucleate non-screw dislocations.

AB - Two dynamic processes were revealed in Cu by in situ tensile tests at the atomic scale: a lattice screw dislocation forming by the combination of two twinning dislocations; and two 60° full dislocations evolving from an extended screw dislocation. The results indicate that screw dislocation can trigger the transition of dislocation slip mode by its formation and dissociation, and also nucleate non-screw dislocations.

KW - Deformation

KW - In situ HRTEM

KW - Screw dislocation

KW - Slip mode

KW - Twin

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U2 - 10.1016/j.msea.2018.05.053

DO - 10.1016/j.msea.2018.05.053

M3 - 文章

AN - SCOPUS:85047378399

SN - 0921-5093

VL - 729

SP - 125

EP - 129

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

ER -

New role of screw dislocation in twin lamella during deformation: An in situ TEM study at the atomic scale

Abstract

Keywords

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