A novel weld-bonding hybrid process for joining Mg alloy and Al alloy

作者：Liu, Liming^*; Ren, Daxin

来源：Materials and Design, 2011, 32(7): 3730-3735.

DOI：10.1016/j.matdes.2011.03.050

• Welding
• Microstructure
• Destructive testing

A novel weld-bonding hybrid process is carried out to join Mg alloy and Al alloy, and the technology combines a modified metal inert gas (MIG) spot welding process with adhesive bonding. The Mg base metal and the fusion zone are metallurgical connected by an Al-Mg transition layer with the thickness of 30-60 mu m. Single nugget of spot welded joint can offer high shear strength of 130 MPa, which reach 81% of that of Mg base metal. The increased strength is due to the intermetallic layer being formed at the region with low stress, so the joint fractures in an Al-rich dendritic region. Superior mechanical properties can be obtained by weld bonded joint, benefiting from the advantages of both welding and adhesive bonding.

• 出版日期2011-8
• 单位大连理工大学