Joining with metal powder and electromagnetic energy
- Univ. of the Ryukyus, Okinawa (Japan). Faculty of Engineering
- Osaka Univ. (Japan). Welding Research Inst.
- Industrial Government Lab. of the Okinawa Prefecture, Okinawa (Japan)
On the joining of two solid metal bars with metal powder medium, the idea applied previously to realize a joint with an appropriate strength can possibly be extended to some other configurations of metal bars and powder media. For the purpose, data were obtained with the intent of optimizing the method using powder medium within a pair of solid sample and were compared with those of the base metal bars, in terms of tensile strength and Vickers hardness tests. Macro and micro structural observation was also made by microscopes and SEM. The solid-state welding method was employed under atmospheric conditions by using metal powder medium which was interposed in the space between the two solid copper bars of specimen (i.e., base metal), and was compressed longitudinally and current was conducted simultaneously to generate Joule thermal heat. Some fundamental data on the mechanical and metallurgical properties of the joint was obtained by using resistance welding. The material used in this study was pure aluminum and stainless steel cylindrical bars for solid specimen, and the powder medium was atomized aluminum, nickel and titanium powder medium. 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. Line analysis (EPMA) was also made to examine the micro-structures of alloy in the joint section. In particular, the experimental data obtained was compared with those of the base metal bars, and it was found that the strength of the joint reached approximately that of the annealed base metal.
- OSTI ID:
- 485095
- Report Number(s):
- CONF-970146--; ISBN 1-890277-03-7
- Country of Publication:
- United States
- Language:
- English
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Joining relatively different melting point materials with metal powder and electromagnetic energy
Joining relatively different melting point materials with metal powder and electromagnetic energy