Evolution of phase constitution with mechanical alloying and spark plasma sintering of nanocrystalline AlxCoCrFeNi (x = 0, 0.3, 0.6, 1 mol) high-entropy alloys

Nanocrystalline Al x CoCrFeNi ( x  = 0, 0.3, 0.6, 1 mol) high-entropy alloys were synthesized by mechanical alloying (MA) and consolidated by spark plasma sintering (SPS). Single-phase face-centered cubic (FCC) structure was achieved with x  = 0 and 0.3. Dual-phase body-centered cubic (BCC)/B2 + FCC...

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Bibliographic Details
Published in:Journal of materials research 2022-02, Vol.37 (4), p.959-975
Main Authors: Bhattacharya, Rahul, Annasamy, Murugesan, Cizek, Pavel, Kamaraj, M., Muralikrishna, G. Mohan, Hodgson, Peter, Fabijanic, Daniel, Murty, B. S.
Format: Article
Language:English
Subjects:
Alloy powders
Aluminum oxide
Applied and Technical Physics
Biomaterials
Body centered cubic lattice
Chemistry and Materials Science
Crystallites
Face centered cubic lattice
High entropy alloys
Inorganic Chemistry
Intermetallic phases
Materials Engineering
Materials research
Materials Science
Mechanical alloying
Nanocrystals
Nanotechnology
Phase composition
Sintering (powder metallurgy)
Solid solutions
Spark plasma sintering
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Summary:Nanocrystalline Al x CoCrFeNi ( x  = 0, 0.3, 0.6, 1 mol) high-entropy alloys were synthesized by mechanical alloying (MA) and consolidated by spark plasma sintering (SPS). Single-phase face-centered cubic (FCC) structure was achieved with x  = 0 and 0.3. Dual-phase body-centered cubic (BCC)/B2 + FCC structure was obtained in x  = 0.6 and 1. Complete solid solution was achieved with a significantly reduced duration of MA (10 h) followed by a brief SPS leading to crystallite size of 
ISSN:0884-2914
2044-5326
DOI:10.1557/s43578-021-00483-0