Accession Number:

ADA576083

Title:

Absence of Long-Range Chemical Ordering in Equimolar FeCoCrNi

Descriptive Note:

Journal article

Corporate Author:

AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH

Report Date:

2012-06-20

Pagination or Media Count:

5.0

Abstract:

Equimolar FeCoCrNi alloys have been the topic of recent research as high-entropy alloys, where the name is derived from the high configurational entropy of mixing for a random solid solution. Despite their name, no systematic study of ordering in this alloy system has been performed to date. Here, we present results from anomalous x-ray scattering and neutron scattering on quenched and annealed samples. An alloy of FeNi3 was prepared in the same manner to act as a control. Evidence of long-range chemical ordering is clearly observed in the annealed FeNi3 sample from both experimental techniques. The FeCoCrNi sample given the same heat treatment lacks long-range chemical order.

Subject Categories:

  • Metallurgy and Metallography
  • Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE