B-13 レーザー積層造形法により作製したコバルトクロム合金の組織と機械的特性におよぼす造形雰囲気の影響(歯科用合金・チタン,一般講演(口頭発表),第60回日本歯科理工学会学術講演会(創立30周年記念大会))

概要

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Ni-free Co-Cr-Mo alloy was fabricated by selective laser melting process in Ar or N_2 atmosphere, and their microstructure and mechanical properties were investigated. Columnar grain and fine cellular dendrites were observed along the building direction for both atmospheres. The accumulation of [100] of the γ phase was confirmed at the laser power of 200W and the scan pitches of 0.2 and 0.3 mm. The deformation behavior of the alloy SLMed in N_2 atmosphere was similar to that in Ar. Mechanical properties of the SLMed alloy in N_2 and Ar satisfied the requirements of dental Co-Cr-Mo alloys (JIST6115 and ISO 22674).
2012-09-25