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Experimental and thermodynamic evaluation of the Co–Cr–C system

Authors
  • Markström, Andreas1
  • Norgren, Susanne2
  • Frisk, Karin1
  • Jansson, Bo3
  • Sterneland, Thérèse4
  • 1 Swedish Corrosion and Metals Research Institute (KIMAB), Sweden , (Sweden)
  • 2 Sandvik Tooling, Sweden , (Sweden)
  • 3 Seco Tools, Sweden , (Sweden)
  • 4 Royal Institute of Technology (KTH), Sweden , (Sweden)
Type
Published Article
Journal
International Journal of Materials Research
Publisher
De Gruyter
Publication Date
Jan 21, 2022
Volume
97
Issue
9
Pages
1243–1250
Identifiers
DOI: 10.1515/ijmr-2006-0197
Source
De Gruyter
Keywords
Disciplines
  • Basic
License
Yellow

Abstract

New experimental results on the liquid + graphite + M7C3 equilibrium are presented. The solubility of Co in the M7C3 carbide has been measured at 1523 and 1723 K. These measurements together with recently published measurements on the fcc + graphite + M7C3 equilibrium show that the solubility of Co in the M7C3 is much higher than predicted from thermodynamic calculations. A new thermodynamic description of the Co–Cr –C system is presented which accurately describes the solubility of Co in the M7C3 carbide in the temperature range 1373 – 1723 K.

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