Investigation of Fatigue Anisotropy in an Extruded Magnesium Alloy

Jordon, J. B., Brown, H., El Kadiri, H., Kistler, M., Lett, R., Baird, J., & Luo, A. A. (2013). Investigation of Fatigue Anisotropy in an Extruded Magnesium Alloy. Internationa Journal of Fatigue. 51, 8-14.

This work presents an investigation on the fatigue behavior of magnesium AM30 alloy in the extruded and transverse directions. Experimental results from strain-controlled fatigue tests showed that the extruded direction exhibited a lower low-cycle fatigue life but a better high-cycle fatigue life compared to the transverse direction. Differences in the cyclic stress-strain response between the two directions were also observed. Lastly, scanning electron microscopy revealed that fatigue cracks predominantly initiated at cracked intermetallic particles