Precipitation path of secondary phases during solidification of the Co–25.5%Cr–5.5%Mo–0.26%C alloy期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Precipitation path of secondary phases during solidification of the Co–25.5%Cr–5.5%Mo–0.26%C alloy

Authors:	L E Ramírez M Castro M Mndez J Lacaze M Herrera G Lesoult

Affiliation:	^a Centro de Investigación y de Estudios Avanzados del IPN, Cinvestav Saltillo, Carr. Saltillo-Monterrey km 13, A. Postal 663, 25000 Saltillo, Coahuila, Mexico ^b CIRIMAT, UMR CNRS/INPT/UPS 5085, ENSIACET, 31077, Toulouse Cedex 4, France ^c Laboratoire de Science et Génie des Matériaux Métalliques, UMR CNRS 7584, ENSMN, Parc de Saurupt, 54042, Nancy Cedex, France

Abstract:	The solidification of the alloy ASTM F-75 ends with sigma phase formation instead of M₇C₃ carbide as presumed from literature. The M₂₃C₆ carbide observed in cast specimens precipitates from the sigma phase (σ) according to the global reaction σ+C→M₂₃C₆ over the range 1403–1303 K. Additionally, lamellar carbides appear below 1262 K for cooling rates lower than 35 K/min.

Keywords:	Solidification Biomaterials Casting Carbides
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