Joining of P/M Components

Paper #:
  • 1999-01-0889

Published:
  • 1999-03-01
Citation:
Parmigiani, J. and Kosco, J., "Joining of P/M Components," SAE Technical Paper 1999-01-0889, 1999, https://doi.org/10.4271/1999-01-0889.
Pages:
9
Abstract:
The successful integration of P/M into a large number of subassemblies can depend on the ability to join P/M components to each other and to wrought materials. Common methods of joining metal components, such as brazing and welding, can give unexpected results when applied to P/M. The purpose of this paper is to investigate the joining of P/M components of varying hardenability, density, and composition using friction welding, high speed pulse welding, gas tungsten arc welding, and brazing. The joints are evaluated using ultimate strength, microhardness, and microstructure. The results show that solid state process, such as high speed pulse welding and friction welding are applicable to all but the highest hardenability materials. Gas tungsten arc welding has less applicability due to crack formation upon cooling. Brazing is generally applicable with most P/M materials assuming a suitable filler metal is selected.
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