A study of joining with metal powder medium by electromagnetic energy
- Univ. of the Ryukyus, Okinawa (Japan). Dept. of Mechanical Systems Engineering
- Osaka Univ. (Japan). Welding Research Inst.
An experimental study on solid-state welding was performed in which copper powder medium sandwiched between two solid bars of the same material (i.e., solid base metal) was compressed longitudinally and a current passed simultaneously to generate Joule thermal heat. The objective of the experimental study was to obtain fundamental data on the mechanical and metallurgical properties of the resulting joint using a resistance spot welding machine. The data is discussed with a view to optimizing the method, and the data is compared with that of the base metal bars, in terms of tensile, impact strength and Vickers hardiness tests, the macro and micro structural observation was also made by microscopes and SEM. The material used in this study was pure copper cylindrical bars for solid base metals and the powder medium was electrodendritic type copper powder. Some of the mechanical and metallurgical properties were studied by examining the macro structures of the joint section and the fractograph of the tensile fracture. In particular, the experimental data obtained were compared with those of the solid base metal bars, and it was found that the strength of the joint reached approximately that of the solid base metal.
- OSTI ID:
- 86260
- Report Number(s):
- CONF-950116--; ISBN 0-7918-1295-2
- Country of Publication:
- United States
- Language:
- English
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Joining relatively different melting point materials with metal powder and electromagnetic energy
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