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论文类型：会议论文

发表时间：2013-06-16

收录刊物：EI、Scopus

卷号：3

页面范围：2088-2093

摘要：It is a new and valuable research that studying the influence of heat treatments on fatigue performance of materials by the infrared thermographgic method. Based on three theoretical models of fatigue indicators, this paper studied mechanical properties of the virgin and heat-treated FV520B steels. With the three indicators and the energy theory, comparison analysis of macro-phenomenon and microstructure evolution during fatigue of the two type specimens was performed. Using the intrinsic dissipation, fatigue limits were fast determined. Influence of heat treatments on mechanical properties and fatigue life was discussed. The research shows that the accuracy of the lock-in thermography could satisfy the needs of engineering design.