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Effect of friction stir processing on microstructure of laser clad cobalt-based alloy |
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| Authors: | Yusuke Kitamura Yoshiaki Morisada Hidetoshi Fujii Tadashi Mizuno Genryuu Abe |
| Affiliation: | 1. AMC Corporation, Osaka, Japan;2. Osaka University Joining and Welding Research Institute, Ibaraki, Japan;3. Osaka University Joining and Welding Research Institute, Ibaraki, Japan |
| Abstract: | (The microstructural refinement of cobalt-based alloy (Stellite No. 6) by laser cladding and friction stir processing (FSP) was studied. A nanometer-sized microstructure consisting of fine carbide (particle size: 100–200 nm) and a grain (grain size: 150–250 nm) was successfully fabricated by the FSP on the laser clad cobalt-based alloy. The nanostructured cobalt-based alloy (Stellite No. 6) had an extremely high hardness of about 750 HV. |
| Keywords: | Friction stir processing laser cladding cobalt-based alloy microstructure refinement mechanical properties |