| 超声冲击处理对2A12铝合金焊接接头表层组织性能的影响 |
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| 引用本文： | 朱有利,李占明,韩志鑫,黄元林.超声冲击处理对2A12铝合金焊接接头表层组织性能的影响[J].稀有金属材料与工程,2010,39(Z1). |
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| 作者姓名： | 朱有利 李占明 韩志鑫 黄元林 |
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| 作者单位： | 装甲兵工程学院,北京,100072 |
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| 摘 要： | 用手工氩弧焊(TIG)、ER5356焊丝对2A12铝合金板进行了焊接,用超声冲击处理技术对焊接接头进行了全覆盖强化处理;借助金相显微镜、X射线衍射仪、透射电镜和显微硬度计对超声冲击强化处理前后接头表层的组织和性能进行了分析。结果表明,超声冲击处理可在接头表层形成尺寸均匀、取向随机分布的细晶组织,大幅消除了气孔、缩松等焊接缺陷,接头显微硬度显著提高。讨论了超声冲击导致的晶粒细化和位错增殖对接头强度的影响。
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| 关 键 词： | 超声冲击 铝合金 焊接接头 微观组织 硬度 |
Effect of Ultrasonic Impact Treatment on Microstructure and Properties of Surface Layer of 2A12 Aluminum Alloy Weld Joint |
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| Zhu Youli,Li Zhanming,Han Zhixin,Huang Yuanlin.Effect of Ultrasonic Impact Treatment on Microstructure and Properties of Surface Layer of 2A12 Aluminum Alloy Weld Joint[J].Rare Metal Materials and Engineering,2010,39(Z1). |
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| Authors: | Zhu Youli Li Zhanming Han Zhixin Huang Yuanlin |
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| Affiliation: | Zhu Youli,Li Zhanming,Han Zhixin,Huang Yuanlin (Academy of Armored Force Engineering,Beijing 100072,China) |
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| Abstract: | Aluminum alloy 2A12 was welded using ER5356 welding wire of TIG.Then the welded joint was strengthened by ultrasonic impact treatment (UIT).The weld toe,weld zone,heat affect zone (HAZ) and parent zone were treated by ultrasonic impact treatment (UIT).The microstructure and properties of the plastic deformation layer were characterized by optical microscopy,X-ray diffraction (XRD),transmission electron microscopy (TEM) and micro-hardness test.Results indicate that the dentric coarse grains near the surface ... |
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| Keywords: | ultrasonic impact treatment 2A12 aluminum alloy welded joint microstructure structure hardness |
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