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- Title
Effect of precipitated phase on dislocation activity under high-frequency impacting and rolling.
- Authors
Huijing Zhang; Xiaoming Qiu; Desheng Xu; Yu Liu; Xiaohui Zhao
- Abstract
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.
- Subjects
PRECIPITATION (Chemistry); ALUMINUM alloys; MICROSTRUCTURE; DISLOCATIONS in metals; TRANSMISSION electron microscopy
- Publication
Micro & Nano Letters (Wiley-Blackwell), 2018, Vol 13, Issue 11, p1542
- ISSN
1750-0443
- Publication type
Article
- DOI
10.1049/mnl.2018.5074