焊管2025，Vol.48Issue(6)：1-10,10.DOI:10.19291/j.cnki.1001-3938.2025.06.001
镁合金/钢异种金属焊接研究进展
Research Progress on Welding of Magnesium Alloy and Steel Dissimilar Metals
赵启宏 1张贵锋 1畅海丞 1江馨 1王书杰1
作者信息
- 1. 西安交通大学 金属材料强度国家重点实验室焊接与涂层研究所,西安 710049
- 折叠
摘要
Abstract
The magnesium/steel combination is one of the important ways to achieve automotive light weighting now.Due to poor metallurgical compatibility and large melting point difference between magnesium and steel,as well as low boiling point of Mg(1 091℃),the interface gap defects caused by Mg vapor pores and poor wetting will appear when traditional fusion welding technology is used to directly connect magnesium and steel.The realization of high-performance connection between magnesium alloys and steel is a hot topic and a significant challenge in welding research.The magnesium/steel dissimilar metal welding methods reported so far include melt-brazing,friction stir welding,TLP diffusion welding,resistance spot welding,etc.Their common feature lies in the use of the brazing idea and the introduction of an intermediate layer to improve wettability.There are many reports on welding-brazing using laser and arc as heat sources,and the interlayers used include Al,Cu,Ni,Zn,Sn,etc.Friction stir brazing(FSB)has the advantages of no need for pre-coating,single pass width(≤30 mm),no interface hook defects and keyhole.When FSB is used to join magnesium/steel combination,it can increase the joint's shear strength to 58 MPa.关键词
异种金属焊接/镁合金/中间层/焊接接头/冶金结合Key words
dissimilar metal welding/magnesium alloys/interlayer/welding joint/metallurgical bonding分类
金属材料引用本文复制引用
赵启宏,张贵锋,畅海丞,江馨,王书杰..镁合金/钢异种金属焊接研究进展[J].焊管,2025,48(6):1-10,10.
