热处理对挤压变形Mg-7%Zn-0.6%Zr-0.5%Y合金低周疲劳行为的影响*

张思倩, 吴伟, 陈丽丽, 车欣, 陈立佳

INFLUENCE OF HEAT TREATMENT ON LOW-CYCLE FATIGUE BEHAVIOR OF EXTRUDED Mg-7%Zn-0.6%Zr-0.5%Y ALLOY

ZHANG Siqian, WU Wei, CHEN Lili, CHE Xin, CHEN Lijia

表1 不同状态Mg-7%Zn-0.6%Zr-0.5%Y合金的应变疲劳参数

Table 1 Strain fatigue parameters of Mg-7%Zn-0.6%Zr-0.5%Y alloys with different states

Alloy state σ'f/ MPa b ε'f/ % c K'/ MPa n' As-extruded 779.30 -0.17453 29.66 -0.72918 714.96 0.21144 T5 1452.35 -0.24987 43.58 -0.88045 853.00 0.20561 T6 1028.05 -0.22335 67.95 -0.83630 508.31 0.19241