Microstructure and Mechanical Properties of AlNiFeCuCoCrV<i><sub>x</sub></i> High-Entropy Alloy

LI Anmin; XU Fei; GUO Baohang; KONG Deming; WANG Fuwei

doi:10.11973/jxgccl201904011

Materials and Mechanical Engineering > 2019 > 43(4): 48-52. > DOI: 10.11973/jxgccl201904011

LI Anmin, XU Fei, GUO Baohang, KONG Deming, WANG Fuwei. Microstructure and Mechanical Properties of AlNiFeCuCoCrV_x High-Entropy Alloy[J]. Materials and Mechanical Engineering, 2019, 43(4): 48-52. DOI: 10.11973/jxgccl201904011

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Microstructure and Mechanical Properties of AlNiFeCuCoCrV_x High-Entropy Alloy

Guangxi Key Laboratory of Processing for Non-ferrous Metal and Featured Materials, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China

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Received Date: August 09, 2018
Revised Date: March 17, 2019

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Abstract

AlNiFeCuCoCrV_x (x=0, 0.1, 0.2, 0.3, 0.4, 0.5, atomic ratio) high-entropy alloys were prepared by smelting in a WK-Ⅱtype non-consumable vacuum arc furnace.The microstructures and mechanical properties of the alloys were studied. The results show that the microstructures of all the tested alloys had a typical dendritic structure, consisting of face-centered cubic (FCC) solid solution, body-centered cubic (BCC) solid solution and intermetallic compound phases. With the addition of vanadium, Fe₂AlV phase precipitated and mainly distributed in the dendrites. With increasing vanadium content, the hardness of the alloy increased first, then decreased and then increased. The addition of vanadium was not good for the compressive property of the alloy. Moreover, with increasing vanadium content, the compressive strength decreased first, then increased, and then decreased.
- high-entropy alloy,
- microstructure,
- vanadium content,
- mechanical property

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