Effects of process parameters on the mechanical properties and microstructure of Al-steel joint by magnetic pulse welding

Abstract

Abstract. In this paper, the effects of process parameters of Magnetic pulse welding (MPW) on the mechanical properties and microstructure of dissimilar metal joints of 6063-O and 20 steel tubes were investigated according to experiments. The experimental results show that the tensile strength of MPW joint is higher than that of the aluminium tube when the discharging energy of MPW attaches a certain value as well as the process parameters are reasonable, in which the mechanical joining was happened. Through the FEM analysis and experiments verification, the metallurgical joints were obtained with the moderate discharging energy, reasonable impact angle and radial gap. The results of micro hardness test show that the transition zone has a big change because the grain structure of joints in the interface was refined.

Mechanical Properties And Joining Mechanism of Magnetic Pulse Welded Aluminum To Titanium

“…It is noteworthy that both the deformation and impact angle are large for the outer tube of zone III adjacent to the non-deformed zone, leading to the highest joining strength. It is seen that shear strength gradually increased with increasing discharge voltage from the distribution trend of overall shear strength, which shows agreement with a study of MPW of Al-steel by Meng et al [19]. They also observed that input energy and impact speed increased with increasing discharge voltage, resulting in more plastic deformation and improved shear strength.…”

Study on the joint mechanical properties of steel structure buildings

“…There are some studies about the reinforcement of steel joints by welding. Meng et al (2015) studied the influence of magnetic pulse welding on the mechanical property and microstructure of the metal joint and found through the experiment that the joints with magnetic pulse welding had higher tensile strength than aluminum tube joints under reasonable technological parameters. Jia et al (2016) used optical fiber laser welding technology to weld the joints of DP980 steel.…”