High Strength Impact Welding of HSLA 340 to Al 5754 and Application Prototype
Loading...
Date
2021-10-13
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Vaporizing Foil Actuator Welding (VFAW) technique was applied to join 4 mm thick aluminium alloy 5754 to 2.5 mm thick High Strength Low Alloy (HSLA) steel 340 with a 1 mm thick aluminium alloy 3003-H14 interlayer. Welds with consistent peak loads of 17.6 kN were achieved with input energy less than 5 kJ. Tension-tension fatigue testing yielded high cycle around 1000k cycles under the peak load of 40% tensile strength from static testing. Microscopic characterization revealed no continuous melting zones in the welding interfaces. Coupled with lightweight designs, the approach was utilized on prototype production of an aluminium-steel vehicle subframe. Issues related to arcing arose and were tackled during the development of prototype production.
Description
Table of contents
Keywords
vaporizing foil actuator welding, prototype demonstration, high cycle fatigue, lightweighting, high strength low alloy steel, impact welding