Open AccessEffect of precipitated phase on dislocation activity under high‐frequency impacting and rolling
Author(s) -
Zhang Huijing,
Qiu Xiaoming,
Xu Desheng,
Liu Yu,
Zhao Xiaohui
Publication year - 2018
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2018.5074
Subject(s) - dislocation , materials science , deformation (meteorology) , transmission electron microscopy , phase (matter) , alloy , crystallography , microstructure , dislocation creep , deformation mechanism , composite material , condensed matter physics , metallurgy , nanotechnology , chemistry , physics , organic chemistry
Al–Mg–Si alloy was treated through high‐frequency impacting and rolling. Microstructures of different deformation layers were observed by transmission electron microscopy. The interaction mechanism between precipitated phase and dislocations for different deformation layer was studied. A detailed schematic of coordinated deformation dislocation mechanism around precipitated phase was established. Results show that lots of coordinated deformation dislocations are formed around the precipitated phase which is far away from the treated surface. With the decrease of distance from the treated surface, dislocation motion is blocked and dislocation lines gradually intersect, which speed up the segmentation and refinement of grains.