Cr2O3活性剂对双丝焊接头组织和熔深的影响

›› 2012, Vol. ›› Issue (03): 651-655.

Cr₂O₃活性剂对双丝焊接头组织和熔深的影响

阮野^1,2, 邱小明¹, 宫文彪³, 王毅¹, 孙大千¹

1. 吉林大学材料科学与工程学院, 长春 130022;
2. 长春轨道客车股份有限公司工业化部, 长春 130062;
3. 长春工业大学材料科学与工程学院, 长春 130041

收稿日期:2011-07-16 出版日期:2012-05-01
通讯作者: 邱小明(1964-),男,教授,博士生导师.研究方向:焊接与新材料连接.E-mail:qiuxm@jlu.edu.cn E-mail:qiuxm@jlu.edu.cn
基金资助:
吉林省科技发展基金项目(20070309).

Effect of Cr₂O₃ fluxes on the microstructures and penetration of twin wire MIG welded joint

RUAN Ye^1,2, QIU Xiao-ming¹, GONG Wen-biao³, WANG Yi¹, SUN Da-qian¹

1. School of Materials Science and Engineering, Jilin University, Changchun 130022, China;
2. Industrial Department, Changchun Railway Vehicles CO., Ltd., Changchun 130062, China;
3. School of Materials Science and Engineering, Changchun University of Technology, Changchun 130041, China

Received:2011-07-16 Online:2012-05-01

摘要/Abstract

摘要： 应用扫描电镜、X射线衍射和光学显微镜等测试方法对双丝熔化极惰性气体保护焊(MIG)焊活性焊接接头组织、熔深与活化机理进行了分析与研究。结果表明:添加Cr₂O₃活性剂试件的焊缝和热影响区与未添加的相比晶粒明显粗化,并且随着活性剂涂敷量的增加,晶粒尺寸增大,但增大趋势逐渐变小;焊接热输入量的增加与Mg₂Si相数量的减少是活性焊接接头焊缝和热影响区晶粒粗化的主要原因;添加Cr₂O₃活性剂试件的焊缝与未添加试件的焊缝相比相组成未发生改变,仍为α-Al和Mg₂Si;焊缝熔深随着活性剂涂敷量的增加而增大,活性剂涂敷量达到一定值时活化效果趋于饱和;电弧收缩与弧柱温度升高是导致活性双丝MIG焊熔深增大的重要因素。

关键词: 金属材料, 铝合金, 双丝熔化极惰性气体保护焊(MIG), 接头组织, 熔深, 活性剂

Abstract: The microstructures, penetration and mechanism of the welding joint by twin wire Metal Inert Gas (MIG) welding with Cr₂O₃ activating flux were studied by using SEM, XRD and optical microscopy. Results show that, in Hot Affect Zone (HAZ), the grain size with the flux is bigger than that without the flux. The grain size increases with the flux but the growth rate gradually slows down. The penetration depth into the welding joint increases sharply with the flux first then slows down to a stable state. More welding heat input and less Mg₂Si content are the main reasons leading to the growth of grain size. The phase compositions of the joint with flux do not change compared to the joint without flux, which are still α-Al and Mg₂Si. The arc constriction and higher arc temperature are the main factors for the deeper penetration into the welding joint.

Key words: metallic material, 6082-T6 Al-alloy, twin wire metal inert gas welding(MIG), microstructure of joint, penetration, activating flux

中图分类号:

TG406

阮野, 邱小明, 宫文彪, 王毅, 孙大千. Cr₂O₃活性剂对双丝焊接头组织和熔深的影响 [J]. , 2012, (03): 651-655.

RUAN Ye, QIU Xiao-ming, GONG Wen-biao, WANG Yi, SUN Da-qian. Effect of Cr₂O₃ fluxes on the microstructures and penetration of twin wire MIG welded joint[J]. , 2012, (03): 651-655.

参考文献

[1] Xu Wen-li, Li Qing-fen, Meng Qing-guo, et al. Microstructures of 2219 twin wire welded joints［J］. China Welding, 2005, 14(2): 101-104.
[2] Huang Ji-wu, Yin Zhi-min, Lei Xue-feng. Microstructure and properties of 7A52 Al alloy welded joint［J］. Transactions of Nonferrous Metals Society of China, 2008, 18:804-808.
[3] Zhang Z D, Liu L M, Shen Y, et al. Mechanical properties and microstructures of a magnesium alloy gas tungsten arc welded with a cadmium chloride flux［J］. Materials Characterizations, 2008, 59(1): 40-46.
[4] Huang H Y. Effects of shielding gas composition and activating flux on GTAW weldments［J］. Material and Design, 2009, 30(7):2404-2409.
[5] 黄勇,樊丁. SiO₂ 增加铝合金交流A-TIG焊熔深的机理［J］.焊接学报,2008, 29(1):45-49. Huang Yong, Fan Ding. Mechanism of weld penetration increased by SiO₂ in AC A-TIG welding for aluminum alloy［J］. Transactions of the China Welding Institution, 2008, 29(1):45-49.
[6] Liu L M, Cai D H, Zhang Z D. Gas tungsten arc welding of magnesium alloy using activated flux-coated wire［J］. Scripta Materialia, 2007, 57(8):695-698.
[7] Modenesi P J, Apolinario E R, Pereira L M. TIG welding with single-component fluxes［J］. Journal of Materials Processing Technology, 2000, 99: 260-265.
[8] Xu Y L, Dong Z B, Wei Y H, et al. Marangoni convection and weld shape variation in A-TIG welding process［J］. Theoretical and Applied Fracture Mechanics, 2007, 48(2): 178-186.
[9] 徐杰,刘子利,沈以赴,等. AZ31镁合金活性TIG焊接头分析［J］.焊接学报,2005, 26(10):54-57. Xu Jie,Liu Zi-li,Shen Yi-fu,et al.A-TIG weld analysis of AZ31 magnesium alloy［J］.Transactions of the China Welding Institution,2005,26(10):54-57.
[10] 朱士尧.等离子体物理基础［M］.北京:科学出版社,1983:19-37.

相关文章 15

[1]	关庆丰,张福涛,彭韬,吕鹏,李姚君,许亮,丁佐军. 含硼、钴9%Cr耐热钢的热变形行为[J]. 吉林大学学报(工学版), 2018, 48(6): 1799-1805.
[2]	胡志清, 颜庭旭, 李洪杰, 吕振华, 廖伟, 刘庚. 深冷处理对铝合金薄板冲剪成形性能的影响[J]. 吉林大学学报(工学版), 2018, 48(5): 1524-1530.
[3]	关庆丰, 董书恒, 郑欢欢, 李晨, 张从林, 吕鹏. 强流脉冲电子束作用下45#钢表面Cr合金化[J]. 吉林大学学报(工学版), 2018, 48(4): 1161-1168.
[4]	赵宇光, 杨雪慧, 徐晓峰, 张阳阳, 宁玉恒. Al-10Sr变质剂状态、变质温度及变质时间对ZL114A合金组织的影响[J]. 吉林大学学报(工学版), 2018, 48(1): 212-220.
[5]	胡志清, 郑会会, 徐亚男, 张春玲, 党停停. 表面微沟槽对Al/CFRP胶结性能的影响[J]. 吉林大学学报(工学版), 2018, 48(1): 229-235.
[6]	付文智, 刘晓东, 王洪波, 闫德俊, 刘晓莉, 李明哲, 董玉其, 曾振华, 刘桂彬. 关于1561铝合金曲面件的多点成形工艺[J]. 吉林大学学报(工学版), 2017, 47(6): 1822-1828.
[7]	陈超, 赵升吨, 崔敏超, 韩晓兰, 范淑琴, 石田徹. AL5052铝合金板平压重塑形连接试验[J]. 吉林大学学报(工学版), 2017, 47(5): 1512-1518.
[8]	谷晓燕, 刘亚俊, 孙大千, 徐锋, 孟令山, 高帅. S355钢/6005A铝合金瞬间液相扩散连接接头组织与性能[J]. 吉林大学学报(工学版), 2017, 47(5): 1534-1541.
[9]	汤华国, 马贤锋, 赵伟, 刘建伟, 赵振业. 高性能金属铝的制备、微观结构及其热稳定性[J]. 吉林大学学报(工学版), 2017, 47(5): 1542-1547.
[10]	关庆丰, 张远望, 孙潇, 张超仁, 吕鹏, 张从林. 强流脉冲电子束作用下铝钨合金的表面合金化[J]. 吉林大学学报(工学版), 2017, 47(4): 1171-1178.
[11]	杨晓红, 杭文先, 秦绍刚, 刘勇兵, 刘利萍. H13钢激光熔覆钴基复合涂层的组织及耐磨性[J]. 吉林大学学报(工学版), 2017, 47(3): 891-899.
[12]	关庆丰, 黄尉, 李怀福, 龚晓花, 张从林, 吕鹏. 强流脉冲电子束诱发的Cu-C扩散合金化[J]. 吉林大学学报(工学版), 2016, 46(6): 1967-1973.
[13]	张学广, 刘纯国, 郑愿, 江仲海, 李湘吉. 基于延性损伤和剪切损伤的铝合金成形极限预测[J]. 吉林大学学报(工学版), 2016, 46(5): 1558-1566.
[14]	刘晓波, 周德坤, 赵宇光. 不同等温热处理条件下半固态挤压Mg₂Si/Al复合材料的组织和性能[J]. 吉林大学学报(工学版), 2016, 46(5): 1577-1582.
[15]	杨悦, 周磊磊. 微弧氧化对铝合金搅拌摩擦焊缝耐蚀性能的影响[J]. 吉林大学学报(工学版), 2016, 46(2): 511-515.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed

Cr₂O₃活性剂对双丝焊接头组织和熔深的影响

Effect of Cr₂O₃ fluxes on the microstructures and penetration of twin wire MIG welded joint

PDF (PC)

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

Metrics

本文评价

推荐阅读 0