Criteria for predicting the formation of single-phase high-entropy alloys

M. Claudia Troparevsky, James R. Morris, Paul R.C. Kent, Andrew R. Lupini, G. Malcolm Stocks

Research output: Contribution to journalArticlepeer-review

401 Scopus citations

Abstract

High-entropy alloys constitute a new class of materials whose very existence poses fundamental questions regarding the physical principles underlying their unusual phase stability. Originally thought to be stabilized by the large entropy of mixing associated with their large number of components (five or more), these alloys have attracted attention for their potential applications. Yet, no model capable of robustly predicting which combinations of elements will form a single phase currently exists. Here, we propose a model that, through the use of high-throughput computation of the enthalpies of formation of binary compounds, predicts specific combinations of elements most likely to form single-phase, highentropy alloys. The model correctly identifies all known single-phase alloys while rejecting similar elemental combinations that are known to form an alloy comprising multiple phases. In addition, we predict numerous potential single-phase alloy compositions and provide three tables with the ten most likely five-, six-, and seven-component single-phase alloys to guide experimental searches.

Original languageEnglish
Article number011041
JournalPhysical Review X
Volume5
Issue number1
DOIs
StatePublished - 2015

Fingerprint

Dive into the research topics of 'Criteria for predicting the formation of single-phase high-entropy alloys'. Together they form a unique fingerprint.

Cite this