Accelerated exploration of multi-principal element alloys with solid solution phases
By Oleg N. Senkov, Jonathan D. Miller, Daniel B. Miracle, Christopher Woodward. Nature Communications, 2015
765 citations recorded by the source corpus.
Recent multi-principal element, high entropy alloy (HEA) development strategies vastly expand the number of candidate alloy systems, but also pose a new challenge—how to rapidly screen thousands of candidate alloy systems for targeted properties. Here we develop a new approach to rapidly assess structural metals by combining calculated phase diagrams with simple rules based on the phases present, their transformation temperatures and useful microstructures. We evaluate over 130,000 alloy systems, identifying promising compositions for more time-intensive experimental studies. We find the surprising result that solid solution alloys become less likely as the number of alloy elements increases. This contradicts the major premise of HEAs—that increased configurational entropy increases the stability of disordered solid solution phases. As the number of elements increases, the configurational entropy rises slowly while the probability of at least one pair of elements favouring formation of intermetallic compounds increases more rapidly, explaining this apparent contradiction. In high entropy alloys a mix of a large number of five or more principal atomic elements is used to tune the properties. Here, the authors present a solution to the problem of predicting the properties of the huge number of potential alloys by developing an efficient screening approach based on automated calculations.
Subfields: Aerospace Engineering, Electrical and Electronic Engineering, Mechanical Engineering
View Paper: https://www.semanticscholar.org/paper/3c5ed8af7414f25c1c03e193389d609adc20d05a
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Aerospace Engineering
In Electrical and Electronic Engineering
- Daniel B. Miracle
- M. Calvo-Dahlborg
- Stephen G. R. Brown
- Oleg N. Senkov
- K. Chaput
- H. Springer
- E. Pickering
- Dierk Raabe
In Mechanical Engineering
Citations in the corpus
- Microstructures and properties of high-entropy alloy films and coatings: a review (2018, neutral): “(MPEAs) [18], multicomponent alloys [2], compositionally complex alloys (CCAs) [19], baseless alloys [17], or metal buffets (MBs) [20], have inspired the explo-”
- The search for high entropy alloys: A high-throughput ab-initio approach (2017, methodology): “The term HEAs, and related terms such as Multiple Principle Element Alloys [3] and Complex Concentrated Alloys [4] often refer to similar alloying concepts.”
- A critical review of high entropy alloys and related concepts (2016, methodology): “6, especially near the solidus temperature [56,125].”