Transition Materials for Automotive Applications

Paper #:
  • 930707

Published:
  • 1993-03-01
Citation:
Baboian, R. and Haynes, G., "Transition Materials for Automotive Applications," SAE Technical Paper 930707, 1993, https://doi.org/10.4271/930707.
Pages:
7
Abstract:
Transition materials which are used to join dissimilar metals such as steel and aluminum on automobiles are described in this paper. The problems associated with conventional methods of joining these two metals include galvanic corrosion, brittle welds, reduced mechanical properties and reduced design flexibility. These problems are solved through the use of clad transition materials at the joints. Transition materials are fabricated by roll bonding dissimilar metals to form the clad materials and subsequently forming the materials to the desired configurations. The clad material allows the actual transition from one metal to the other to occur at the clad bond interface and thus only similar metal joints exist in the assembly. Welding studies describe the high strength and ductility of steel to aluminum joints through the use of steel clad aluminum transition materials. Corrosion data shows a marked reduction in the amount of corrosion at steel to aluminum joints with the use of a steel clad aluminum transition material. A wide range of transition metal configurations can be used to join dissimilar metals such as steel and aluminum as described in this paper.
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