1. Dissimilar Materials Welding with a Standoff-Free Vaporizing Foil Actuator between TRIP 1180 Steel Sheets and AA5052 Alloy
- Author
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Yuhyeong Jeong, Jonghun Yoon, Choo Woong, Giseung Shin, and Jeoung Han Kim
- Subjects
Technology ,Materials science ,vaporizing foil actuator welding ,Alloy ,chemistry.chemical_element ,impact welding ,Welding ,engineering.material ,Article ,law.invention ,Aluminium ,law ,Indentation ,dissimilar materials welding ,standoff-free ,General Materials Science ,Diffusion (business) ,Composite material ,metallic bonding ,FOIL method ,Microscopy ,QC120-168.85 ,QH201-278.5 ,lap shear test ,Engineering (General). Civil engineering (General) ,TK1-9971 ,chemistry ,Descriptive and experimental mechanics ,engineering ,Electrical engineering. Electronics. Nuclear engineering ,TA1-2040 ,Actuator ,Metallic bonding - Abstract
This paper mainly demonstrates an advanced type of the vaporizing foil actuator welding (VFAW) process between GPa-grade steel (TRIP1180) and aluminum alloy (AA5052-H32) without applying standoff. To secure a flying distance during the VFAW process, the preformed target sheet shaped like a circular indentation has been utilized. It is necessary to optimize process parameters integrated with geometrical design of the preform since the welding strength can be decreased beyond the optimum input energy in the standoff-free VFAW process. The welded surface was evaluated by SEM-EDS, XRD, EBDS, and TEM to analyze the welding mechanism and composition at the welding interface. The diffusion zone including the AlFe3 phase was observed at the welded interface which has high grain density due to the high-speed impact by increasing the welding strength, which leads to the perfect welding between the dissimilar materials.
- Published
- 2021