Effect of heat treatment on high-cycle fatigue behavior of Mg-Zn-Y-Zr alloy
(1.National Laboratory of Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China2.Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China3.中国科学院金属研究所 材料环境腐蚀试验研究中心, 沈阳 1100164.中国科学院金属研究所，辽宁省材料与氢重点试验室，沈阳110015)
Abstract: High-cycle fatigue (HCF) behavior of as-forged-T5 Mg-Zn-Y-Zr wrought alloy with stress-ratio R=-1 at ambient environment was presented. The relationship between the maximum stress and the number of cycles to failure was constructed. The results show that the fatigue strength at 107 cycles of the as-forged alloy in T5 state is higher than that of the alloy in T4 state. However, in T6 state, the fatigue strength at 107 cycles is higher than those of the alloys in both T5 and T4 states.
Key words: magnesium alloy； Mg-Zn-Y-Zr alloy； high-cycle fatigue (HCF)； heat treatment