气孔对不同MIG焊铝镁合金焊缝凝固裂纹敏感性的影响
Effect of Porosity on Solidification Crack Sensitivity of Different MIG Welding Al-Mg Alloy Weld Seam
摘 要
为研究铝镁合金焊缝内部气孔对不同MIG焊焊缝凝固裂纹敏感性的影响，使用鱼骨型试板测试了8种焊接工艺下的焊缝凝固裂纹长度，并分别对焊缝区的微观气孔进行观察。结果表明：双脉冲MIG焊焊缝凝固裂纹敏感性普遍大于单脉冲MIG焊的，但其焊缝气孔数量却比单脉冲MIG焊的少；双脉冲MIG焊焊缝凝固裂纹敏感性增大的原因是双脉冲电流的振荡作用使气孔聚集，导致气孔内部气压增大，阻碍了低熔点液相向微观热裂纹的填充。
MIG焊
焊接工艺
凝固裂纹
气孔
Al-Mg alloy
MIG welding
welding process
solidification crack
porosity
Abstract
In order to study the effects of porosity in different MIG welding Al-Mg alloy weld seam on the sensitivity of solidification crack, the lengths of weld seam solidification cracks in 8 welding processes were measured by using fishbone test plate, and the micro porosity in weld zone were observed. The results show that the weld seam solidification crack sensitivity of double pulse MIG welding is generally higher than that of single pulse MIG welding, but the number of weld porosities is less than that of single pulse MIG welding. The reason for the increase of weld seam solidification crack sensitivity in double pulse MIG welding is that the oscillation of double pulse current makes the porosities gather, which leads to the increase of gas pressure in the porosities and hinders the filling of low melting point liquid phase to micro hot cracks.
中图分类号 TG441.7 DOI 10.11973/lhjy-wl202105008
所属栏目 试验与研究
基金项目 国家自然科学基金项目（51804196）
收稿日期 2021/1/4
修改稿日期
网络出版日期
作者单位点击查看
备注陈毓(1994-),男,硕士研究生,主要从事铝合金焊接性及焊接工艺的研究工作,chenyu_weld@163.com
引用该论文: CHEN Yu,ZHANG Tianli,YU Hang,CHEN Haoxin,WU Wen,WANG Weiguang. Effect of Porosity on Solidification Crack Sensitivity of Different MIG Welding Al-Mg Alloy Weld Seam[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2021, 57(5): 31～34
陈毓,张天理,于航,陈浩欣,武雯,王伟光. 气孔对不同MIG焊铝镁合金焊缝凝固裂纹敏感性的影响[J]. 理化检验－物理分册, 2021, 57(5): 31～34
共有人对该论文发表了看法，其中：
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】季小辉, 董斌,袁静,等.6082 T6铝合金自动焊接工艺参数的选择[J].理化检验(物理分册),2011,47(1):15-17.
【2】夏晓健,张孔林,林德源.电流互感器铝合金法兰开裂失效分析[J].理化检验(物理分册),2017,53(10):754-756.
【3】古金茂,黄鹏飞,卢振洋,等.本周期交流短路过渡焊接方法及系统[J].焊接学报,2009,30(4):73-76.
【4】YANG T, XIONG J, CHEN H.Effect of process parameters on tensile strength in plasma-MIG hybrid welding for 2219 aluminum alloy[J].The International Journal of Advanced Manufacturing Technology,2016,84(9/10/11/12):2413-2421.
【5】魏波.铝合金等离子-MIG复合焊工艺研究[D].成都:西南交通大学,2014.
【6】张欣,冯曰海.双脉冲对7A52铝合金MIG焊接质量的影响[J].机械制造与自动化,2017,46(5):39-41.
【7】刘忠杰,高桥宪人,上山智之,等.直流-交流双脉冲焊接法的开发[J].金属加工(热加工),2010(8):22-24.
【8】王鹏雁.脉冲半自动MIG焊在5083铝镁合金管道焊接中的应用[J].金属加工(热加工),2011(12):32-34.
【9】邵盈恺,王玉玺,杨志斌,等.基于焊缝熔深优化的7075铝合金等离子-MIG复合焊接热裂纹敏感性[J].金属学报,2018,54(4):547-556.
【10】冯艺.热输入量对车用6063铝合金激光-MIG复合焊接热塑性的影响[J].应用激光,2018,38(5):773-776.
【11】何宽芳,张卓杰,杨庆.铝合金焊接热力耦合及凝固热裂纹敏感性分析[J].热加工工艺,2015,44(23):183-187.
【12】CONIGLIO N, CROSS C E.Initiation and growth mechanisms for weld solidification cracking[J].International Materials Reviews,2013,58(7):375-397.
【13】MIYAGI M, KAWAHITO Y, WANG H Z, et al.X-ray phase contrast observation of solidification and hot crack propagation in laser spot welding of aluminum alloy[J].Optics Express,2018,26(18):22626-22636.
【2】夏晓健,张孔林,林德源.电流互感器铝合金法兰开裂失效分析[J].理化检验(物理分册),2017,53(10):754-756.
【3】古金茂,黄鹏飞,卢振洋,等.本周期交流短路过渡焊接方法及系统[J].焊接学报,2009,30(4):73-76.
【4】YANG T, XIONG J, CHEN H.Effect of process parameters on tensile strength in plasma-MIG hybrid welding for 2219 aluminum alloy[J].The International Journal of Advanced Manufacturing Technology,2016,84(9/10/11/12):2413-2421.
【5】魏波.铝合金等离子-MIG复合焊工艺研究[D].成都:西南交通大学,2014.
【6】张欣,冯曰海.双脉冲对7A52铝合金MIG焊接质量的影响[J].机械制造与自动化,2017,46(5):39-41.
【7】刘忠杰,高桥宪人,上山智之,等.直流-交流双脉冲焊接法的开发[J].金属加工(热加工),2010(8):22-24.
【8】王鹏雁.脉冲半自动MIG焊在5083铝镁合金管道焊接中的应用[J].金属加工(热加工),2011(12):32-34.
【9】邵盈恺,王玉玺,杨志斌,等.基于焊缝熔深优化的7075铝合金等离子-MIG复合焊接热裂纹敏感性[J].金属学报,2018,54(4):547-556.
【10】冯艺.热输入量对车用6063铝合金激光-MIG复合焊接热塑性的影响[J].应用激光,2018,38(5):773-776.
【11】何宽芳,张卓杰,杨庆.铝合金焊接热力耦合及凝固热裂纹敏感性分析[J].热加工工艺,2015,44(23):183-187.
【12】CONIGLIO N, CROSS C E.Initiation and growth mechanisms for weld solidification cracking[J].International Materials Reviews,2013,58(7):375-397.
【13】MIYAGI M, KAWAHITO Y, WANG H Z, et al.X-ray phase contrast observation of solidification and hot crack propagation in laser spot welding of aluminum alloy[J].Optics Express,2018,26(18):22626-22636.
相关信息
