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Isothermal fatigue tests were carred out on Mg-12Gd-3Y-0.5Zr magnesium alloy and its heat-treated counterpart at different temperatures. The exprimental results shows that isothermal fatigue strength of two alloys decrease very slowly with increasing temperature up to 200°C. The ultimate tensile strength of heattreated Mg-12Gd-3Y-0.5Zr is slight lower than that of as-rolled counterpart, however, the fatigue strength of heat-treated alloy is higher.

In this paper, tensile and thermo-mechanical fatigue tests were carried out on Mg-12Gd-3Y-0.5Zr magnesium alloy at elevated temperatures. It shows that Mg-12Gd-3Y-0.5Zr magnesium alloy has good mehanical properties at high temperatures and thermo-mechanical fatigue mechanism is disscussed in this paper.

In this paper, tensile and thermo-mechanical fatigue tests were carried out on Mg-12Gd-3Y-0.5Zr magnesium alloy at elevated temperatures. It shows that Mg-12Gd-3Y-0.5Zr magnesium alloy has good mehanical properties at high temperatures and thermo-mechanical fatigue mechanism is disscussed in this paper.