High-entropy alloys fabricated via powder metallurgy. A critical review. (15th March 2019)

• Record Type: Journal Article
• Authors: Torralba, J. M.; Alvaredo, P.; García-Junceda, Andrea
• Is Part Of: Powder metallurgy. Volume 62:Number 2(2019)
• Page Start: 84
• Page End: 114
• Publication Date: 2019-03-15
• Subjects: High-entropy alloys -- powder metallurgy -- mechanical alloying -- spark plasma sintering -- high-performance materials; Powder metallurgy -- Periodicals; 671.3705
• DOI: 10.1080/00325899.2019.1584454
• Languages: English
• ISSNs: 0032-5899

Abstract

ABSTRACT: High-entropy alloys (HEAs) have attracted a great deal of interest over the last 14 years. One reason for this level of interest is related to these alloys breaking the alloying principles that have been applied for many centuries. Thus, HEAs usually possess a single phase (contrary to expectations according to the composition of the alloy) and exhibit a high level of performance in different properties related to many developing areas in industry. Despite this significant interest, most HEAs have been developed via ingot metallurgy. More recently, powder metallurgy (PM) has appeared as an interesting alternative for further developing this family of alloys to possibly widen the field of nanostructures in HEAs and improve some capabilities of these alloys. In this paper, PM methods applied to HEAs are reviewed, and some possible ways to develop the use of powders as raw materials are introduced.