Enhanced Mechanical and Corrosion Performance by Forming Micro Shear Bands in Cold Forged Mg-Gd-Y-Zr Alloy
- Resource Type
- article
- Authors
- Zhengjiang Yang; Chuming Liu; Yonghao Gao; Xueyi Guo; Yingchun Wan
- Source
- Materials, Vol 13, Iss 14, p 3181 (2020)
- Subject
- magnesium alloy
micro shear bands
microstructure
mechanical properties
corrosion resistance
Technology
Electrical engineering. Electronics. Nuclear engineering
TK1-9971
Engineering (General). Civil engineering (General)
TA1-2040
Microscopy
QH201-278.5
Descriptive and experimental mechanics
QC120-168.85
- Language
- English
- ISSN
- 1996-1944
Forging at room temperature was applied on the per-extruded Mg-Gd-Y-Zr alloy to investigate the effect of cold forging on the microstructure, mechanical properties and corrosion resistance of the alloy. Abundant micro shear bands with misorientations of 2–15° were generated in the as forged alloys. Tremendous enhancement in tensile yield strength was achieved after forging. With a quantitative investigation, micro band boundaries were considered to provide a great contribution to the reinforcement. The ultrafine structure resulting from the formation of micro shear bands led to increased corrosion resistance of the alloy.