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Fatigue behavior of AZ31B magnesium alloy electron beam welded joint based on infrared thermography 被引量:5
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作者 杨宏伟 崔泽琴 +2 位作者 王文先 许并社 许海鹰 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2016年第10期2595-2602,共8页
Fatigue behavior of AZ31B magnesium alloy electron beam welded joint undergoing cyclic loading was investigated by infrared thermography. Temperature evolution throughout a fatigue process was presented and the mechan... Fatigue behavior of AZ31B magnesium alloy electron beam welded joint undergoing cyclic loading was investigated by infrared thermography. Temperature evolution throughout a fatigue process was presented and the mechanism of heat generationwas discussed. Fatigue limit of the welded joint was predicted and the fatigue damage was also assessed based ontheevolution of the temperatureand hotspot zone on the specimen surfaceduring fatigue tests. The presented results show that infrared thermography can not onlyquicklypredict the fatigue behavior of the welded joint, but also qualitatively identify the evolution of fatigue damage in real time. It is found that the predicted fatigue limit agrees well with the conventionalS-Nexperimental results. The evolution of the temperatureand hotspot zone on the specimen surface can be an effectivefatigue damage indicatorfor effectiveevaluationof magnesium alloy electron beam welded joint. 展开更多
关键词 magnesium alloy electron beam welded joint fatigue behavior infrared thermography
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