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2219铝合金搅拌摩擦焊接头裂纹尖端张开位移(CTOD)试验研究

Keywords: 2219铝合金,搅拌摩擦焊,裂纹尖端张开位移

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Abstract:

采用裂纹尖端张开位移(cracktipopeningdisplacement,CTOD)试验研究了2219铝合金搅拌摩擦焊(frictionstirwelding,FSW)接头各区域的断裂性能,分析了搅拌摩擦焊接头组织结构对接头断裂性能的影响.研究结果表明,2219铝合金搅拌摩擦焊接头的断裂呈韧性,但接头各区域韧性分布呈现明显的不均匀性,焊核区断裂韧性最好,热机影响区和热影响区次之,但均高于母材的断裂韧性.

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