Experimental investigations of fcc/bcc phase equilibria in the Cr–Mn–Ni ternary system

Haoge Li, Jingjing Ruan, Nobufumi Ueshima, Katsunari Oikawa

Research output: Contribution to journalArticlepeer-review

Abstract

Cr–Mn–Ni ternary alloys have been experimentally studied. Three different isothermal sections have been characterized at 1000 °C, 1100 °C and 1200 °C via Metallography, X-ray diffraction (XRD) and electron probe micro analyzer (EPMA). The results are summarized as follows: (1) the solubility of Ni in the bcc-(Cr) phase was small; (2) the solubility of Ni in bcc-(Cr) phase slightly increases as the temperature increases from 1000 to 1200 °C; (3) the σ-CrMn4 phase with 12 at. % solubility of Ni is observed at 1000 °C; (4) the fcc-(Ni) phase with a large solubility of Cr is observed at 1000, 1100, and 1200 °C, respectively. The experimental information obtained from this study is useful for the thermodynamic assessment of the Cr–Mn–Ni ternary system, and the development of databases in high entropy alloys of the Co–Cr–Fe–Mn–Ni system.

Original languageEnglish
Article number106994
JournalIntermetallics
Volume127
DOIs
Publication statusPublished - 2020 Dec

Keywords

  • Cr–Mn–Ni ternary System
  • High entropy alloys
  • Isothermal sections
  • Microstructure
  • Phase diagrams
  • X-ray diffraction

ASJC Scopus subject areas

  • Chemistry(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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