Abstract
Sustainable lightweight vehicle design has becoming a key trend in the future. A new way to join aluminum alloys and steel sheet. Cold metal transfer (CMT) welding of thin sheet metal products. Determination of equilibrium wire-feed-speeds welding-speeds and arc length. Seam formation and microstructure of CMT were researched. Not only that, but optimum welding parameters were analyzed. Study of welding joint microstructure of compound layer on welding joint. Comparing the steel side of welding seam. The aluminum alloy siding grain size was larger. After tensile test, joint was fractured on the aluminum alloy side. Warp deformation occurred on aluminum side. Displacement of warp deformation became larger along with the increase of welding current. The results reviewed in this article indicate that the aluminum alloy fractured is more preferable to steel. CMT welding has found applications in automobile industries, defence sectors and power plants as a method of additive manufacturing.
Highlights
Sustainable lightweight vehicle design has becoming a key trend in the future
Aluminum alloys are widely used in automobile industry for the purpose of reduction in the vehicle weight [1]
Deng established a thermal elasto-plastic model based on ABAQUS finite element software[4]
Summary
Sustainable lightweight vehicle design has becoming a key trend in the future. It has the advantages of energy-saving, emission-reduction and increase of dynamic and safety performance. Uday took different methods to research plastic deformation of welding joint and analyzed its micro-structure [7]. It is difficult to obtain a sound joint to aluminum alloy and steel in different melting temperature and thermal expansion. The experiment process is referred to the theory put forward by Xinmin Lai that both product design and process planning control are indispensable [11] This theory consisted with the physical model building of aluminium-steel mixed joint sheet, the study on performance of digital metal joint with detailed design and simulation verification. Related to all aspects on the design of Al/Steel dissimilar metal welding process were researched to make sure that the design of welding parameter was under the same condition, to ensure the consistency and continuity of welding joint quality was ensured. The property of welding joint for Al/Steel dissimilar metal sheet by CMT welding technology is explored
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