Effect of triple junctions on deformation twinning in a nanostructured Cu–Zn alloy: A statistical study using transmission Kikuchi diffraction

Silu Liu; Xiaolong Ma; Lingzhen Li; Liwen Zhang; Patrick W. Trimby; Xiaozhou Liao; Yusheng Li; Yonghao Zhao; Yuntian Zhu

doi:10.3762/bjnano.7.143

Beilstein Journal of Nanotechnology (Oct 2016)

Effect of triple junctions on deformation twinning in a nanostructured Cu–Zn alloy: A statistical study using transmission Kikuchi diffraction

Silu Liu,
Xiaolong Ma,
Lingzhen Li,
Liwen Zhang,
Patrick W. Trimby,
Xiaozhou Liao,
Yusheng Li,
Yonghao Zhao,
Yuntian Zhu

Affiliations

Silu Liu: Nano Structural Materials Center, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China
Xiaolong Ma: Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA
Lingzhen Li: Nano Structural Materials Center, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China
Liwen Zhang: Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA
Patrick W. Trimby: Australian Centre for Microscopy and Microanalysis, The University of Sydney, Sydney, NSW 2006, Australia
Xiaozhou Liao: School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, NSW 2006, Australia
Yusheng Li: Nano Structural Materials Center, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China
Yonghao Zhao: Nano Structural Materials Center, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China
Yuntian Zhu: Nano Structural Materials Center, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China

DOI: https://doi.org/10.3762/bjnano.7.143
Journal volume & issue: Vol. 7, no. 1
pp. 1501 – 1506

Abstract

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Scanning electron microscopy transmission Kikuchi diffraction is able to identify twins in nanocrystalline material, regardless of their crystallographic orientation. In this study, it was employed to characterize deformation twins in Cu/10 wt % Zn processed by high-pressure torsion. It was found that in 83% of grains containing twins, at least one twin intersects with a triple junction. This suggests that triple junctions could have promoted the nucleation of deformation twins. It should be cautioned that this technique might be unable to detect extremely small nanoscale twins thinner than its step size.

Published in Beilstein Journal of Nanotechnology

ISSN: 2190-4286 (Online)
Publisher: Beilstein-Institut
Country of publisher: Germany
LCC subjects: Technology: Chemical technology; Science: Physics
Website: http://www.beilstein-journals.org/bjnano/home/home.htm

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