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Ultrafine-Grained AlCoCrFeNi2.1 Eutectic High-Entropy Alloy

I. S. Wani ; T. Bhattacharjee ; Saad Sheikh (Institutionen för material- och tillverkningsteknik, Yt- och mikrostrukturteknik) ; Y. P. Lu ; S. Chatterjee ; P. P. Bhattacharjee ; Sheng Guo (Institutionen för material- och tillverkningsteknik, Yt- och mikrostrukturteknik) ; N. Tsuji
Materials Research Letters (2166-3831). Vol. 4 (2016), 3, p. 174-179.
[Artikel, refereegranskad vetenskaplig]

The development of microstructure and mechanical properties was investigated in a heavily cold-rolled and annealed AlCoCrFeNi2.1 high-entropy alloy. The as-cast alloy having a eutectic morphology consisting of alternate bands of ordered L1(2) and B2 phases was 90% cold-rolled. The deformed microstructure showed profuse shear banding and disordering of the L12, but no transformation of the B2 phase. A duplex microstructure consisting of ultrafine equiaxed grains (similar to 0.60 mu m) of disordered face centered cubic and B2 was observed after annealing at 800 degrees C. The annealed material showed remarkable strength-ductility combination having ultimate tensile strength similar to 1.2 GPa and elongation to failure similar to 12%.

Nyckelord: High-Entropy Alloys, Ordered Phases, Cold-Rolling, Annealing, Properties, texture evolution, phase-stability, recrystallization, microstructure, deformation, ductility, behavior, Materials Science



Denna post skapades 2016-11-11.
CPL Pubid: 245043

 

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Institutioner (Chalmers)

Institutionen för material- och tillverkningsteknik, Yt- och mikrostrukturteknik

Ämnesområden

Materialkemi
Etologi

Chalmers infrastruktur