Ultrafine-Grained AlCoCrFeNi2.1 Eutectic High-Entropy Alloy
Journal article, 2016
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%.
microstructure
High-Entropy Alloys
texture evolution
deformation
Cold-Rolling
phase-stability
Annealing
Ordered Phases
ductility
Materials Science
behavior
recrystallization
Properties
Author
I. S. Wani
IIT Hyderabad
T. Bhattacharjee
Kyoto University
Saad Ahmed Sheikh
Chalmers, Materials and Manufacturing Technology, Surface and Microstructure Engineering
Y. P. Lu
Dalian University of Technology
S. Chatterjee
IIT Hyderabad
P. P. Bhattacharjee
IIT Hyderabad
Sheng Guo
Chalmers, Materials and Manufacturing Technology, Surface and Microstructure Engineering
N. Tsuji
Kyoto University
Materials Research Letters
2166-3831 (eISSN)
Vol. 4 3 174-179Subject Categories (SSIF 2011)
Behavioral Sciences Biology
Materials Chemistry
DOI
10.1080/21663831.2016.1160451