| 气孔和显微组织对6063铝合金双脉冲耦合CMT焊接接头强度的协同影响 |
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| 引用本文： | 王清涛,王晓南,陈夏明,环鹏程,董其鹏,张庆宇,Hiromi NAGAUMI.气孔和显微组织对6063铝合金双脉冲耦合CMT焊接接头强度的协同影响[J].中国有色金属学会会刊,2022,32(3):801-811. |
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| 作者姓名： | 王清涛 王晓南 陈夏明 环鹏程 董其鹏 张庆宇 Hiromi NAGAUMI |
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| 摘 要： | 研究不同焊接速度下6063铝合金"CMT MIX+Synchropulse"焊接接头的焊缝气孔率、气孔尺寸以及焊缝和热影响区的软化.结果表明,随着焊接速度从55 cm/min提高到65 cm/min,焊缝气孔率从0.1％增加至3.9％,且出现大尺寸气孔(341.1μm).65 cm/min时焊缝气孔尺寸主要集中分布在8...
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| 关 键 词： | 冷金属过渡 铝合金 气孔 显微组织 力学性能 |
| 收稿时间： | 5 March 2021 |
Interactive effects of porosity and microstructure on strength of 6063 aluminum alloy CMT MIX + Synchropulse welded joint |
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| Affiliation: | 1. School of Iron and Steel, Soochow University, Suzhou 215002, China;2. School of Mechanical and Transportation, Southwest Forestry University, Kunming 650224, China;3. State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China |
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| Abstract: | The porosity, pore size and softening of 6063 aluminum alloy CMT MIX + Synchropulse welded joint with different welding speeds were studied. The results show that with the increase of welding speed (from 55 to 65 cm/min), the porosity increases dramatically (from 0.1% to 3.9%) and large pores (341.1 μm) appear. The pore size distributions are mainly concentrated at 87.8 and 20.6 μm in the joints produced from weld speeds of 65 and 55 cm/min, respectively. The dissolution and transformation of the β′′ phase in the base metal (BM) result in a significant softening of both the fusion zone and heat-affected zone, and the latter was more serious. The effects of welding speed on the average tensile strength of the full penetration welded joints are minor, which was about 155 MPa (67.4% that of the BM). |
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| Keywords: | cold metal transfer aluminum alloy pore microstructure mechanical properties |
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