| 焊接方法对2219铝合金性能及组织的影响 |
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| 引用本文： | 彭杏娜,曲文卿,张国华.焊接方法对2219铝合金性能及组织的影响[J].航空材料学报,2009,29(2):57-60. |
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| 作者姓名： | 彭杏娜 曲文卿 张国华 |
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| 作者单位： | 北京航空航天大学机械工程与自动化学院,北京,100191 |
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| 摘 要： | 通过拉伸试验,利用扫描电镜与光学显微镜等手段,比较了搅拌摩擦焊(FSW)和变极性钨极氩弧焊(VPTIG)两种焊接方法对2219铝合金板材力学性能的影响.结果表明,无论何种焊接方法均使2219铝合金板材的强度和塑性下降,但是FSW焊接接头强度以及塑性等力学性能明显优于VPTIG焊熔焊接头.拉伸试样断口形貌以及显微组织分析显示,FSW焊核区组织均匀细密,断裂位置位于后退侧热影响区与焊核区的交界处.VPTIG焊接接头易出现气孔缺陷,熔合区是最薄弱环节.
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| 关 键 词： | 2219铝合金 搅拌摩擦焊(FSW) 变极性钨极氩弧焊(VPTIG) 微观组织 |
Influence of Welding Processes on Mechanical Properties of Aluminum Alloy 2219 |
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| PENG Xing-na,QU Wen-qing,ZHANG Guo-hua.Influence of Welding Processes on Mechanical Properties of Aluminum Alloy 2219[J].Journal of Aeronautical Materials,2009,29(2):57-60. |
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| Authors: | PENG Xing-na QU Wen-qing ZHANG Guo-hua |
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| Institution: | School of Mechanical Engineering & Automation;Beijing University of Aeronautics and Astronautics;Beijing 100191;China |
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| Abstract: | Both types of welds,friction stir welds of aluminum alloy 2219 and variable polarity gas tungsten arc welds of the same alloy were made and mechanical properties were evaluated by tensile testing.It is shown that the FSW welds had better performances than VPTIG welds,although both welding processes decreased the mechanical properties of aluminum alloy 2219 base metal plates.The weld metals and base metals were characterized by scanning electron microscopy and optical microscopy.According to fractography and... |
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