In situ observation of stress induced grain boundary migration in nanocrystalline gold

In this study, the plastic behaviors of nanocrystalline Au with an average grain size of 18nm were investigated in situ using a home-made tensile device in a transmission electron microscope. We provide the direct experimental results revealed the process of grain boundary migration. The results sho...

Full description

Saved in:
Bibliographic Details
Published in:Scripta materialia 2017-06, Vol.134, p.95-99
Main Authors: Wang, Lihua, Xin, Tianjiao, Kong, Deli, Shu, Xinyu, Chen, Yanhui, Zhou, Hao, Teng, Jiao, Zhang, Ze, Zou, Jin, Han, Xiaodong
Format: Article
Language:English
Subjects:
Grain boundary migration
In situ
Nanocrystalline metal
Plastic deformation
Transmission electron microscopy (TEM)
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this study, the plastic behaviors of nanocrystalline Au with an average grain size of 18nm were investigated in situ using a home-made tensile device in a transmission electron microscope. We provide the direct experimental results revealed the process of grain boundary migration. The results show that dislocation behaviors are prevalent for large grains. However, for grain sizes below ~15nm, grain boundary migration occurs frequently. The results of our statistical analyses show that grain boundary migration occurs more frequently than grain boundary sliding and rotation in nanocrystalline Au. [Display omitted]
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2017.03.003