Deviation from high-entropy configurations in the atomic distributions of a multi-principal-element alloy

The alloy-design strategy of combining multiple elements in near-equimolar ratios has shown great potential for producing exceptional engineering materials, often known as ‘high-entropy alloys’. Understanding the elemental distribution, and, thus, the evolution of the configurational entropy during solidification, is undertaken in the present study using the Al1.3CoCrCuFeNi model alloy. Here we show that, even when the material undergoes elemental segregation, precipitation, chemical ordering and spinodal decomposition, a significant amount of disorder remains, due to the distributions of multiple elements in the major phases. The results suggest that the high-entropy alloy-design strategy may be applied to a…

• NS
  National Science Foundation

  Awards: 0900291, W911NF-13-1-0438, 0909037, CMMI-0900291, 00119262, DE-AC05-00OR22725, DE-AC02-06CH11357, DMR-0909037, CMMI-1100080, W911NF-13, 1100080
• UD
  U.S. Department of Energy

  Awards: AC05-00OR22725, 00119262, DE-FE-0011194, AC02-06CH11357, 0004000, DE-AC05-00OR22725 with UT-Battelle, DE-FE-0004000, DE-AC02, 06CH11357, DE-AC02-06CH11357, DE-AC05, CMMI-1100080, 00OR22725, DE-AC02-
• B
  Battelle

  Awards: DE-AC02-06CH11357, DE-AC05, DE-AC05-00OR22725
• CM
  Carnegie Mellon University

  Award: DE-AC02-06CH11357
• U
  UT-Battelle

  Awards: DE-AC05-, AC05-00OR22725
• OO
  Office of Fossil Energy

  Awards: DE-FE-0011194, CMMI-1100080, DE-AC02-06CH11357, DE-FE0008855, DE-AC05-00OR22725, 00119262, DE-FE-0004000
• OO
  Office of Science

  Awards: DE-AC05-00OR22725, DE-AC02-06CH11357, DE-AC02, 06CH11357, AC02-06CH11357, AC05-00OR22725
• OO
  Office of Nuclear Energy

  Awards: 00119262, DE-FE-0004000, DE-FE-0011194, DE-AC05-00OR22725, CMMI-1100080, DE-AC02-06CH11357
• UA
  U.S. Air Force
• NE
  National Energy Technology Laboratory

  Awards: DE-FE-0004000, DE-FE0008855, CMMI-1100080, DE-FE-0011194, DE-AC02-06CH11357, AC02-06CH11357, 00119262, 0004000
• DO
  Division of Materials Research

  Award: DE-AC02-06CH11357
• DO
  Division of Civil, Mechanical and Manufacturing Innovation

  Awards: CMMI-1100080, 1100080
• BE
  Basic Energy Sciences

  Awards: DE-AC02, DE-AC05-00OR22725, AC05-00OR22725, DE-FE-0011194, AC02-06CH11357, 06CH11357
• NE
  Nuclear Energy University Program

  Awards: 00119262, DE-FE-0011194, DE-AC05-00OR22725, DE-FE-0004000, CMMI-1100080, DE-AC02-06CH11357
• AN
  Argonne National Laboratory

  Awards: DE-AC02, 06CH11357, AC02-06CH11357
• OR
  Oak Ridge National Laboratory

  Awards: DE-AC05-00OR22725 with UT-Battelle, AC05-00OR22725, DE-FE-0011194, DE-AC02-06CH11357
• AF
  Air Force Research Laboratory

  Award: DE-AC05-00OR22725