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Effect of Post-Sintering Conditions on the Mechanical Properties of a New Co-Cr Alloy Produced by New Subtractive Manufacturing.
Lee, Dae-Ho; Hanawa, Takao; Jang, Seong-Ho; Lee, Hyo-Jin; Hong, Min-Ho; Min, Bong Ki; Kwon, Tae-Yub.
Afiliación
  • Lee DH; Department of Dental Science, Graduate School, Kyungpook National University, Daegu 700-412, Republic of Korea.
  • Hanawa T; Department of Metallic Materials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo 101-0062, Japan.
  • Jang SH; Department of Medical and Biological Engineering, Graduate School, Kyungpook National University, Daegu 700-412, Republic of Korea.
  • Lee HJ; Institute for Biomaterials Research and Development, Kyungpook National University, Daegu 700-412, Republic of Korea.
  • Hong MH; Institute for Biomaterials Research and Development, Kyungpook National University, Daegu 700-412, Republic of Korea.
  • Min BK; Center for Research Facilities, Yeungnam University, Gyeongsan 712-749, Republic of Korea.
  • Kwon TY; Institute for Biomaterials Research and Development, Kyungpook National University, Daegu 700-412, Republic of Korea.
J Nanosci Nanotechnol ; 19(4): 2395-2398, 2019 04 01.
Article en En | MEDLINE | ID: mdl-30487007
In this study, we investigated the effect of sintering temperature (1300, 1350, or 1400 °C) and holding time (1 or 2 h) on the mechanical properties of a cobalt-chromium (Co-Cr) alloy (Soft Metal) produced by milling/post-sintering, using a tensile test (n = 6). Prior to the test, the different nanostructures arising from the sintering conditions were also analyzed. The phase ratio of γ (face-centered cubic) phase to ɛ (hexagonal close-packed) phase increased mainly with increasing temperature. The formation of Cr23C6 carbide was greatest in the 1350 °C groups when compared to the other temperature groups. The 1400 °C groups had a substantially greater grain size than the 1300 °C and 1350 °C groups, together with a significant number of annealing twins inside the matrix phases. Overall, the 1350 °C groups showed the most superior properties. The 1400 °C groups showed a mean 0.2% yield strength under 500 MPa. The holding times did not significantly affect the mechanical properties (p > 0.05).
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Nanosci Nanotechnol Año: 2019 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Nanosci Nanotechnol Año: 2019 Tipo del documento: Article Pais de publicación: Estados Unidos