中国有色金属学报(英文版), 2017, 27(1): 17-24.
10.1016/S1003-6326(17)60003-7
钨极惰性气体保护焊和金属惰性气体保护焊AA6082-T6管状接头显微组织与力学特性的对比研究
采用钨极惰性气体保护焊和金属惰性气体保护焊两种工艺对T6态AA6082合金管进行焊接，比较所得焊接接头的显微组织特性和力学性能。利用光学显微镜，拉伸测试和显微硬度测试研究焊接工艺的影响。结果表明，由于形成了细小的等轴晶且枝晶间距较小，TIG焊接接头的拉伸强度比MIG焊接接头的拉伸强度高，强度可提高25%。在焊接效率方面，TIG焊接可得到更可靠的强度，与MIG焊接相比，其强度可提高25%。两种焊接工艺焊缝区的硬度都大幅度降低，这是由于高温时材料发生了相变。MIG焊接样品的硬度较低，为1.08GPa。MIG焊接接头的热影响区比TIG焊接接头的稍大，这是由于单位长度的热输出更大。
参考文献：
[1] Federico M. Mazzolani.3D aluminium structures[J].Thin-Walled structures,2012:258-266.
[2] M. Ericsson;R. Sandstrom.Influence of welding speed on the fatigue of friction stir welds, and comparison with MIG and TIG[J].International Journal of Fatigue,200312(12):1379-1387.
[3] A. Cabello Munoz;G. Ruckert;B. Huneau;X. Sauvage;S. Marya.Comparison of TIG welded and friction stir welded Al-4.5Mg-0.26Sc alloy[J].Journal of Materials Processing Technology,20081-3(1-3):337-343.
[4] A. Squillace;A. De Fenzo;G. Giorleo.A comparison between FSW and TIG welding techniques: modifications of microstructure and pitting corrosion resistance in AA 2024-T3 butt joints[J].Journal of Materials Processing Technology,20041(1):97-105.
[5] Juan Zhao.Comparative investigation of tungsten inert gas and friction stir welding characteristics of Al-Mg-Sc alloy plates[J].Materials & design,20101(1):306-311.
[6] Norman AF;Prangnell PB;Drazhner V.Effect of welding parameters on the solidification microstructure of autogenous TIG welds in an Al-Cu-Mg-Mn alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,19991(1):53-64.
[7] A. K. Lakshminarayanan;V. Balasubramanian;K. Elangovan.Effect of welding processes on tensile properties of AA6061 aluminium alloy joints[J].The International Journal of Advanced Manufacturing Technology,20093/4(3/4):286-296.
材料期刊网