程东旭, 彭迟, 程东海, 陈益平, 赵超. 镁钢异种材料TIG熔钎焊接接头力学性能分析[J]. 南昌航空大学学报(自然科学版), 2014, 28(4): 50-54. DOI: 10.3969/j.issn.1001-4926.2014.04.010
引用本文: 程东旭, 彭迟, 程东海, 陈益平, 赵超. 镁钢异种材料TIG熔钎焊接接头力学性能分析[J]. 南昌航空大学学报(自然科学版), 2014, 28(4): 50-54. DOI: 10.3969/j.issn.1001-4926.2014.04.010
CHENG Dong-xu, PENG Chi, CHENG Dong-hai, CHEN Yi-ping, ZHAO Chao. The Mechanical Properties of Magnesium to Steel Joints by TIG Brazing[J]. Journal of nanchang hangkong university(Natural science edition), 2014, 28(4): 50-54. DOI: 10.3969/j.issn.1001-4926.2014.04.010
Citation: CHENG Dong-xu, PENG Chi, CHENG Dong-hai, CHEN Yi-ping, ZHAO Chao. The Mechanical Properties of Magnesium to Steel Joints by TIG Brazing[J]. Journal of nanchang hangkong university(Natural science edition), 2014, 28(4): 50-54. DOI: 10.3969/j.issn.1001-4926.2014.04.010

镁钢异种材料TIG熔钎焊接接头力学性能分析

The Mechanical Properties of Magnesium to Steel Joints by TIG Brazing

  • 摘要: 采用交流TIG焊对AZ31B镁合金和镀锌钢异种材料进行了搭接熔钎焊的研究,通过调整焊接参数获得最佳焊接成形,并采用拉剪试验机测试了不同工艺参数下接头的力学性能。结果表明:TIG焊是一种适用于镁合金和镀锌钢异种材料连接的有效方法,镀锌钢表面的Zn能使熔化的镁合金很好的润湿并与镀锌钢作用,使得镁-钢能形成较为理想的搭接接头。焊接速度65mm/min,焊接电流50A,保护气体流量为15L/min时接头拉剪强度可达154.73MPa;最佳参数范围为:焊接电流40~60A,焊接速度60~70mm/min。

     

    Abstract: This paper take TIG(Tungsten Inert Gas)welding under AC mode to weld AZ31B magnesium alloy to galvanized steel with lap joint, through adjusted welding parameters to acquire optimum welding forming, and tested the mechanical properties of the joints with tensile shear testing machine. The results shown that TIG welding is an effective method of connected dissimilar materials of magnesium and steel, Zn element in the surface of galvanized steel can make molten magnesium alloy wetting with steel effectively, and form an ideal lap joints. When the welding speed is 65 mm/min, welding current is 50 A and shielding gas flow rate is 15L/min, the joint tensile shear strength can up to 154.73 MPa. The optimum welding parameters of welding current and welding speed are ranged from 40~60 A and 60~70 mm/min, respectively.

     

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