A Modification of Nb-Rich Portion for Refractory Nb–Ni Alloy Phase Diagram with New Peritectoid Transition

J. F. Zhao, H. P. Wang, B. Wei

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

The Nb-rich region of refractory Nb–Ni alloy phase diagram was refined by thermal analysis, long-time annealing experiments, and electron probe microanalysis (EPMA). Both metallography and EPMA results indicate that the Nb2Ni phase is a new stable intermetallic phase with a stoichiometric composition. Thermal analyses show that the peritectoid transition of (Nb) + Nb7Ni6 → Nb2Ni occurs at the temperature of 1569.7 K. In addition, the powder XRD results suggest that the equilibrium lattice constants of Nb7Ni6, Nb2Ni, and (Nb) phases are a = 4.957 Å/c = 27.000 Å, a = 11.594 Å ,and a = 3.299 Å, respectively.

Original languageEnglish
Pages (from-to)615-623
Number of pages9
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume54
Issue number2
DOIs
StatePublished - Feb 2023

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