The results reveal that the solid solution and aging treatments will lead to a change in both cyclic stress response and cyclic stress-stain behavior of the extruded AM50 alloy.

• 在高的外加总应变幅下,固溶和时效处理可以提高挤压变形AM50镁合金的疲劳寿命,但当外加总应变幅较低时,固溶和时效处理则降低挤压变形AM50镁合金的疲劳寿命;