In situ atomistic deformation mechanisms of twin-structured nanocrystal Pt - Details

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Abstract：

The　atomic-scale　in　situ　tensile　tests　of　twin-structured　Pt　(d　=　similar　to　25　nm)　nanocrystals　were　conducted　using　a　home-made　device　in　a　high-resolution　transmission　electron　microscope.　We　showed　that　the　twin-structured　Pt　nanocrystals　exhibit　as　large　as　21.9%　homogeneous　elongation　before　crack　emergence.　The　atomic-scale　and　time-resolved　in　situ　investigation　indicated　that,　full　and　partial　dislocations　that　intersect　with　coherent　twin　boundaries　(TBs),　as　well　as　TB　migration　resulting　from　partial　dislocations　glide　adjacent　to　the　TBs,　and　the　rapid　migration　of　incoherent　TBs　all　contribute　the　large　homogeneous　elongation　capability　of　the　twin-structured　nanocrystals.　(C)　2018　Acta　Materialia　Inc.　Published　by　Elsevier　Ltd.　All　rights　reserved.

Keyword：

Coherent twin boundary Plastic deformation Atomic-scale In situ Incoherent twin boundary

Author Community：

[ 1 ] [Wang, Lihua]Beijing Univ Technol, Inst Microstruct & Property Adv Mat, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
[ 2 ] [Kong, Deli]Beijing Univ Technol, Inst Microstruct & Property Adv Mat, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
[ 3 ] [Zhang, Ze]Beijing Univ Technol, Inst Microstruct & Property Adv Mat, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
[ 4 ] [Han, Xiaodong]Beijing Univ Technol, Inst Microstruct & Property Adv Mat, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
[ 5 ] [Teng, Jiao]Univ Sci & Technol Beijing, Dept Mat Phys & Chem, Beijing 100083, Peoples R China
[ 6 ] [Yu, Guanghua]Univ Sci & Technol Beijing, Dept Mat Phys & Chem, Beijing 100083, Peoples R China
[ 7 ] [Zou, Jin]Univ Queensland, Mat Engn & Ctr Microscopy & Microanal, Brisbane, Qld 4072, Australia
[ 8 ] [Zhang, Ze]Zhejiang Univ, Dept Mat Sci, Hangzhou 310008, Zhejiang, Peoples R China

Reprint Author's Address：

王立华韩晓东
[Wang, Lihua]Beijing Univ Technol, Inst Microstruct & Property Adv Mat, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China;;[Han, Xiaodong]Beijing Univ Technol, Inst Microstruct & Property Adv Mat, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China;;[Zou, Jin]Univ Queensland, Mat Engn & Ctr Microscopy & Microanal, Brisbane, Qld 4072, Australia

Email：

wlh@bjut.edu.cn |
j.zou@uq.edu.au |
xdhan@bjut.edu.cn

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Source ：

SCRIPTA MATERIALIA

ISSN： 1359-6462

Year： 2018

Volume： 147

Page： 103-107

6 . 0 0 0

JCR@2022

ESI Discipline： MATERIALS SCIENCE;

ESI HC Threshold：260

JCR Journal Grade：1

Cited Count：

WoS CC Cited Count： 26

SCOPUS Cited Count： 27

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 0

Affiliated Colleges：

材料与制造学部固体微结构与性能研究所

材料与制造学部本学院/部未明确归属的数据

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