Three-point-bending fatigue behavior of AZ31B magnesium alloy based on infrared thermography technology

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• 作者：Zeqing Xu^a ; ^b ; Hongxia Zhang^a ; ^b ; ^{zhanghongxia@tyut.edu.cn} ; Zhifeng Yan^a ; ^b ; Fei Liu^a ; Peter. K. Liaw^c ; Wenxian Wang^a ; ^b
• 关键词：AZ31B magnesium alloy ; Fatigue behavior ; Three-point-bending fatigue test ; Infrared thermography technology ; Tensile twins
• 刊名：International Journal of Fatigue
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：95
• 期：Complete
• 页码：156-167
• 全文大小：3797 K
• 卷排序：95

文摘

The characteristic of heat production and transfer were discussed, and the connection between temperature distribution and stress distribution was analyzed. An energy model based on the energy theoretical model in the fatigue process was established to predict the fatigue life of the AZ31B magnesium specimens loaded the three-point-bending. The development of the microstructure of tensile region was analyzed. The prediction model was justified by the qualitative analysis of microstructure evolution. The temperature-evolution mechanism in the tensile region and the relation between the temperature rise and the twinning were discussed.