Affiliation:
1. School of Mechanical Engineering , Xiangtan University, Hunan , PR China
2. Key Laboratory of Materials Design and Preparation Technology of Hunan Province , Xiangtan University, Hunan , PR China
Abstract
Abstract
The 800°C isothermal section of the Co–Cr–Mo–Si quaternary system with the Co content fixed at 70 at.% and different contents of Cr, Mo and Si was determined by means of X-ray diffraction and scanning electron microscopy coupled with energy dispersive X-ray spectroscopy. Twelve different phase regions could be identified; one of them being a wide (Co) + Co3Mo2Si phase field, but only one four-phase region consisting of (Co) + Co3Mo +Co7Mo6 + Co3Mo2Si was experimentally confirmed. The measured solubility of Si in the Co3Mo phase is rather limited but could reach up to 15.1 at.% in Co7Mo6. The solubility of Cr in Co3Mo and Co7Mo6 was measured to be as high as 13.4 and 23.3 at.%, respectively, and the maximum solubility of Cr in (Co), αCo2Si and Co3Mo2Si could reach 26.9, 5.6 and 12.5 at.%, respectively.
Subject
Materials Chemistry,Metals and Alloys,Physical and Theoretical Chemistry,Condensed Matter Physics
Cited by
5 articles.
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