低温挤压Mg-4Zn-2Al-2Sn合金的组织与力学性能研究*

赵东清, 周吉学, 刘运腾, 董旭光, 王晶, 杨院生

MICROSTRUCTURE AND MECHANICAL PROPERTIES OF Mg-4Zn-2Al-2Sn ALLOYS EXTRUDED AT LOW TEMPERATURES

ZHAO Dongqing, ZHOU Jixue, LIU Yunteng, DONG Xuguang, WANG Jing, YANG Yuansheng

表2 挤压Mg-4Zn-2Al-2Sn合金拉伸与压缩性能

Extrusion temperature ℃ Tensile property Compressive property R Yield strength MPa Ultimate strength MPa Elongation % Yield strength MPa Ultimate strength MPa Elongation % 225 211.7 317.5 27.6 186.3 451.0 -17.6 0.88 250 176.7 296.3 24.0 158.6 442.0 -18.0 0.89 275 173.8 293.8 23.6 165.8 458.7 -16.5 0.95