Work

High-throughput synthesis of high-entropy alloys via parallelized electric field assisted sintering

Year: 2025

Type: article

Abstract: Materials discovery and design is an expensive and time-consuming process, though necessary to advance many engineering fields. In this work, a novel tooling design is utilized in conjunction with electric field assisted sintering (EFAS) to effectively create a new high-throughput synthesis technique: parallelized EFAS. Through this technique, a wide range of material compositions and geometries can be synthesized in parallel as isolated samples or as part of contiguous arrays. Multiple tooling designs are explored to examine both the flexibility and limitations of the technique. A series of increasing complex alloys is produced simultaneously using in situ alloying, beginning with pure Ni and adding equimolar constituents up to the septenary high-entropy alloy AlCoCrCuFeMnNi. Microstructural characterization reveals each sample is effectively fully dense and chemically homogenous while exhibiting phases in agreement with CALPHAD predictions. Scalability of parallelized EFAS is then experimentally demonstrated and the implications for materials discovery and automation are discussed.

Source: npj Advanced Manufacturing

DOI: 10.1038/s44334-024-00015-8

Authors: Michael Moorehead, Arin S. Preston, Jorgen Rufner, Alex Pomo, Robert Allen Roach

Institution: Idaho National Laboratory

Language: English

Topic: High Entropy Alloys Studies

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $2,490

Funder: U.S. Department of Energy