Abstract
High and low cycle fatigue tests were conducted for extruded magnesium alloys, AZ31 and AZ61. In the high cycle fatigue properties, the rotating bending tests revealed higher fatigue strength than uniaxial loading tests. In this case, AZ61 showed higher fatigue strength than AZ31, while both alloys did not show fatigue limits. In the low cycle fatigue properties, AZ31 and AZ61 revealed almost equal fatigue strength under constant strain amplitude tests. However, the hysteresis loops were very unique, showing anisotropy between tension and compression sides.
