Experimental Investigation of Phase Equilibria in the Co-Re-Ta Ternary System

Xingjun Liu; Dan Wu; Jinbin Zhang; Mujin Yang; Jiahua Zhu; Lingling Li; Yuechao Chen; Shuiyuan Yang; Jiajia Han; Yong Lu; Cuiping Wang

doi:10.3390/met8110911

Metals (Nov 2018)

Experimental Investigation of Phase Equilibria in the Co-Re-Ta Ternary System

Xingjun Liu,
Dan Wu,
Jinbin Zhang,
Mujin Yang,
Jiahua Zhu,
Lingling Li,
Yuechao Chen,
Shuiyuan Yang,
Jiajia Han,
Yong Lu,
Cuiping Wang

Affiliations

Xingjun Liu: College of Materials and Fujian Provincial Key Laboratory of Materials Genome, Xiamen University, Xiamen 361005, China
Dan Wu: College of Materials and Fujian Provincial Key Laboratory of Materials Genome, Xiamen University, Xiamen 361005, China
Jinbin Zhang: College of Materials and Fujian Provincial Key Laboratory of Materials Genome, Xiamen University, Xiamen 361005, China
Mujin Yang: College of Materials and Fujian Provincial Key Laboratory of Materials Genome, Xiamen University, Xiamen 361005, China
Jiahua Zhu: College of Materials and Fujian Provincial Key Laboratory of Materials Genome, Xiamen University, Xiamen 361005, China
Lingling Li: College of Materials and Fujian Provincial Key Laboratory of Materials Genome, Xiamen University, Xiamen 361005, China
Yuechao Chen: College of Materials and Fujian Provincial Key Laboratory of Materials Genome, Xiamen University, Xiamen 361005, China
Shuiyuan Yang: College of Materials and Fujian Provincial Key Laboratory of Materials Genome, Xiamen University, Xiamen 361005, China
Jiajia Han: College of Materials and Fujian Provincial Key Laboratory of Materials Genome, Xiamen University, Xiamen 361005, China
Yong Lu: College of Materials and Fujian Provincial Key Laboratory of Materials Genome, Xiamen University, Xiamen 361005, China
Cuiping Wang: College of Materials and Fujian Provincial Key Laboratory of Materials Genome, Xiamen University, Xiamen 361005, China

DOI: https://doi.org/10.3390/met8110911
Journal volume & issue: Vol. 8, no. 11
p. 911

Abstract

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In this study, the isothermal sections of the Co-Re-Ta ternary system at 1100, 1200, and 1300 °C have been experimentally investigated by means of electron probe microanalysis and X-ray diffraction. The results indicated the following: (1) The solid solubilities of the λ3, (εCo, Re), χ-Re7Ta3, and bcc-(Ta) phases were large and changed very little from 1100 to 1300 °C; (2) more interestingly, the λ2 phase, with a very limited solubility of Re, was surrounded by the λ3 phase; (3) the solubility of Re for the μ-Co6Ta7 phase increased slowly from 1100 to 1300 °C. These experimental results will be useful for Co-based high-temperature alloys, especially as a supplement for thermodynamic databases.

Published in Metals

ISSN: 2075-4701 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Mining engineering. Metallurgy
Website: http://www.mdpi.com/journal/metals

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