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International Journal of New Developments in Engineering and Society, 2017, 1(3); doi: 10.25236/IJNDES.17334.

Phase structure of multiprincipal component AlCoCuFeMnNi alloy prepared by melting casting


MA Mingxing1, WANG Zhixin1, ZHOU Jiachen1, LIANG Cun1 and ZHAO Cong2

Corresponding Author:
MA Mingxing

1. School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, China

2. School of Chemistry and Environmental Technology, Chongqing University of Arts and Sciences, Chongqing 402160, China


AlCoCuFeMnNi high-entropy alloy was fabricated by noon-consumable arc remelter. The phase structure was investigated by x-ray diffraction, and thermodynamic parameters were discussed through caculation in detail. The results show that AlCoCuFeMnNi alloy has two BCC phase structure. The mixing entropy is 13.38J·mol-1·K-1, the mixing enthalpy is -2.56kJ·mol-1, the atomic radius difference is 0.15, and the Gibbs free energy is -35.73kJ·mol-1. The diffraction broad peaks were mainly due to the lattice distortion owing to the atomic radius of each element difference and inhomogeneous diffusion, the increment of residual stress because of cooling rapidly, the small grain size and wide distribution.


High entropy; phase structure; microstructure; mechanical alloying

Cite This Paper

MA Mingxing, WANG Zhixin, ZHOU Jiachen, LIANG Cun and ZHAO Cong. Phase structure of multiprincipal component AlCoCuFeMnNi alloy prepared by melting casting.  International Journal of New Developments in Engineering and Society (2017) Vol.1, Num.3: 111-114.


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