skip to main content

Title: Investigations of quaternary interdiffusion in a constituent system of high entropy alloys

Interdiffusion was investigated at 1000°C in a quaternary Fe-Ni-Co-Cr system, which is an essential constituent of many high-entropy alloys. The relative values of main and cross interdiffusion coefficients determined from concentrations and interdiffusion fluxes developed in a single diffusion couple indicate that significant diffusional interactions exist in this system. Thermodynamic interactions between the binary constituents were analyzed based on the activity coefficient relations and it is shown that the observed diffusional interactions of a component with others are consistent with relative thermodynamic interactions between them.
Authors:
;  [1]
  1. Department of Materials Science and Engineering, Indian Institute of Technology Kanpur, U.P. 208016 (India)
Publication Date:
OSTI Identifier:
22492363
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Advances; Journal Volume: 5; Journal Issue: 9; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CHROMIUM ALLOYS; COBALT ALLOYS; CONCENTRATION RATIO; DIFFUSION; ENTROPY; IRON ALLOYS; NICKEL ALLOYS; QUATERNARY ALLOY SYSTEMS; REACTION KINETICS; TEMPERATURE DEPENDENCE; THERMODYNAMIC ACTIVITY