Multiaxial cyclic behaviour and fatigue modelling of AM30 Mg alloy extrusion

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• 作者：Ali A. Roostaei ^{aaroostaei@uwaterloo.ca} ; Hamid Jahed ; ^{hjahed@uwaterloo.ca}
• 关键词：Magnesium alloys ; Multiaxial fatigue ; Cyclic properties ; Fatigue modelling ; Strain energy density
• 刊名：International Journal of Fatigue
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：97
• 期：Complete
• 页码：150-161
• 全文大小：3517 K
• 卷排序：97

文摘

AM30 extrusion shows better low-cycle shear fatigue properties than AZ31B, AZ61A. Non-proportionality of biaxial loading does not affect axial hysteresis loops. Phase angle shift effects on shear hysteresis loops depend on axial strain level. Additional non-proportional hardening is seen for both axial and torsional modes. Critical plane and energy models give reliable multiaxial fatigue life estimations.