TY - GEN
T1 - Heat treatment of ASTM F75 Co-Cr-Mo-C-Si-Mn alloys
AU - Alfirano,
AU - Mineta, Shingo
AU - Namba, Shigenobu
AU - Yoneda, Takashi
AU - Ueda, Kyosuke
AU - Narushima, Takayuki
N1 - Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2010
Y1 - 2010
N2 - In this study, the carbide dissolution and formation of biomedical Co-28Cr-6Mo-0.25C-1Si (1Si) and Co-28Cr-6Mo-0.25C-1Mn (1Mn) alloys occurring during solution treatment and aging were investigated. The addition of Si or Mn markedly affected the behavior of precipitates during heat treatment. The alloy with added Si required a longer solution treatment time for complete precipitate dissolution as compared to the alloy with added Mn. Blocky M23C 6-type carbide was observed during solution treatment at 1448-1523 K. Starlike precipitates were observed in the 1Si and 1Mn alloys at 1523-1548 K and 1523 K, respectively. The starlike precipitates exhibited two types of morphologies: dense and stripe patterned. The starlike precipitates with dense and stripe-patterned appearances were a π-phase and M23C 6-type carbide + metallic γ-phase, respectively. An M 23C6-type carbide and an η-phase were formed during the aging of both the 1Si and the 1Mn alloys. In addition, an intermetallic σ-phase was detected during the aging of the 1Si alloy at 1373 K.
AB - In this study, the carbide dissolution and formation of biomedical Co-28Cr-6Mo-0.25C-1Si (1Si) and Co-28Cr-6Mo-0.25C-1Mn (1Mn) alloys occurring during solution treatment and aging were investigated. The addition of Si or Mn markedly affected the behavior of precipitates during heat treatment. The alloy with added Si required a longer solution treatment time for complete precipitate dissolution as compared to the alloy with added Mn. Blocky M23C 6-type carbide was observed during solution treatment at 1448-1523 K. Starlike precipitates were observed in the 1Si and 1Mn alloys at 1523-1548 K and 1523 K, respectively. The starlike precipitates exhibited two types of morphologies: dense and stripe patterned. The starlike precipitates with dense and stripe-patterned appearances were a π-phase and M23C 6-type carbide + metallic γ-phase, respectively. An M 23C6-type carbide and an η-phase were formed during the aging of both the 1Si and the 1Mn alloys. In addition, an intermetallic σ-phase was detected during the aging of the 1Si alloy at 1373 K.
KW - Aging
KW - Carbide
KW - Co-Cr-Mo alloy
KW - Precipitation
KW - Solution treatment
UR - http://www.scopus.com/inward/record.url?scp=77955489694&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77955489694&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/MSF.654-656.2180
DO - 10.4028/www.scientific.net/MSF.654-656.2180
M3 - Conference contribution
AN - SCOPUS:77955489694
SN - 0878492550
SN - 9780878492558
T3 - Materials Science Forum
SP - 2180
EP - 2183
BT - PRICM7
PB - Trans Tech Publications Ltd
T2 - 7th Pacific Rim International Conference on Advanced Materials and Processing, PRICM-7
Y2 - 2 August 2010 through 6 August 2010
ER -