Yang Zhengjiang, Liu Chuming, Gao Yonghao, Guo Xueyi, Wan Yingchun
School of Materials Science and Engineering, Central South University, Changsha 410083, China.
School of Metallurgy and Environment, Central South University, Changsha 410083, China.
Materials (Basel). 2020 Jul 16;13(14):3181. doi: 10.3390/ma13143181.
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.
对挤压后的Mg-Gd-Y-Zr合金进行室温锻造，以研究冷锻对该合金微观结构、力学性能和耐腐蚀性的影响。在锻造后的合金中产生了大量取向差为2-15°的微剪切带。锻造后拉伸屈服强度有显著提高。通过定量研究，微带边界被认为对强化有很大贡献。微剪切带形成产生的超细结构导致合金耐腐蚀性增强。
