Co基合金肉盛層の微細組織に及ぼす摩擦攪拌プロセスの影響

北村 優介; 森貞 好昭; 藤井 英俊; 水野 雅; 阿部 源隆

doi:10.2207/qjjws.33.29

Effect of friction stir processing on microstructure of laser clad cobalt based alloy

Yusuke KITAMURA, Yoshiaki MORISADA, Hidetoshi FUJII, Tadashi MIZUNO, Genryuu ABE

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Keywords: Friction stir processing, Laser cladding, Cobalt based alloy, Microstructure refinement, Mechanical properties

JOURNAL FREE ACCESS

2015 Volume 33 Issue 1 Pages 29-33

DOI https://doi.org/10.2207/qjjws.33.29

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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.

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