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搅拌摩擦焊接头疲劳行为研究现状
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TG405

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Research Progress on the Fatigue Behavior of Friction Stir Welded Joints
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    摘要:

    搅拌摩擦焊(FSW)接头的抗疲劳断裂特性是评定其构件使用性能的重要指标之一.本文对搅拌摩擦焊的接头疲劳行为研究现状做了比较详尽的总结,涉及S-N曲线、裂纹扩展速度da/dN和门槛值△Kth,腐蚀环境下的裂纹扩展速度和门槛值、显微组织及影响因素,并提出了今后需要解决的问题.

    Abstract:

    The fatigue fracture resistance of FSW joints is one of the very important properties to assess the capability of FSW structure in practical application. The recent advances on the fatigue properties of FSW joints were summarized in details, which mainly included the test results of S-N curves, the relationship between fatigue crack growth rate da/dN and AK, the threshold value of stress intensity factor AKth and the fatigue crack growth behavior in corrosion environment. The influences of various factors on the fatigue behavior of FSW joints were analyzed and the existed problems for the fatigue assessment of FSW were proposed and discussed.

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周才智 杨新岐 栾国红.搅拌摩擦焊接头疲劳行为研究现状[J].稀有金属材料与工程,2006,35(7):1172~1176.[Zhou Caizhi, Yang Xinqi, Luan Guohong. Research Progress on the Fatigue Behavior of Friction Stir Welded Joints[J]. Rare Metal Materials and Engineering,2006,35(7):1172~1176.]
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  • 收稿日期:2005-04-24
  • 最后修改日期:2005-04-24
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