[G] Biomaterials Development and Clinics(2)

[277] Precipitation behavior during reverse transformation treatment in biomedical Co-Cr-Mo alloys fabricated by electron beam melting

*Ueki Kosuke¹, Kasamatsu Motoka², Ueda Kyosuke³, Koizumi Yuichiro⁴, Wei DaiXiu⁵, Chiba Akihiko⁵, Narushima Takayuki^3,6 (1. Faculty of Science and Engineering, Kindai University, 2. Graduate school of Engineering, Tohoku University (graduate student), 3. Graduate school of Engineering, Tohoku University, 4. Graduate School of Engineering, Osaka University, 5. Institute for Materials Research, Tohoku University, 6. Institute for Materials Science (NIMS))

Keywords:Co-Cr-Mo合金、電子ビーム積層造形、逆変態処理、晶析出物、熱処理

電子ビーム積層造形法によって作製した炭素量の異なる二種類のCo-Cr-Mo(CCM)合金に対して、熱処理による相変態と晶析出物相の関係を調査した。π相およびCo₃Mo₂Si型析出物が相変態の起点となることが示唆された。