Article ID Journal Published Year Pages File Type
1610824 Journal of Alloys and Compounds 2014 8 Pages PDF
Abstract

•Three isothermal sections at 800, 1000, and 1100 °C were established.•A large solubility of Cr is identified in the Co6Ta7 phase.•The high–temperature phase (Co,Cr)2Ta(HT) was found to be stabilized at low temperatures.

The phase equilibria in the Co–Cr–Ta ternary system were experimentally investigated by using backscattered electron (BSE), wavelength dispersive X-ray analyzer (WDX) and X-ray diffraction (XRD). Three isothermal sections of the Co–Cr–Ta ternary system at 800 °C, 900 °C and 1100 °C were experimentally determined. The experimental results show that: (1) No ternary compound is found in this system; (2) A large solubility of Cr is identified in the Co6Ta7 phase; (3) The (Co, Cr)2Ta(HT) phase is stabilized at temperatures below it stability limits in Co–Ta and Cr–Ta binary systems in the range of Cr concentrations from 4 to 61 at.% and from 24 to 41 at.% Ta.

Related Topics
Physical Sciences and Engineering Materials Science Metals and Alloys
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