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Entropy 2018, 20(12), 924; https://doi.org/10.3390/e20120924

Effect of Binding and Dispersion Behavior of High-Entropy Alloy (HEA) Powders on the Microstructure and Mechanical Properties in a Novel HEA/Diamond Composite

1
Powder Metallurgy Research Institute, Central South University, Changsha 410083, China
2
College of Engineering, Nanjing Agricultural University, Nanjing 210031, China
3
Henan Huanghe Whirlwind Co., Ltd., Xuchang 461500, China
*
Author to whom correspondence should be addressed.
Received: 29 October 2018 / Revised: 29 November 2018 / Accepted: 30 November 2018 / Published: 4 December 2018
(This article belongs to the Special Issue New Advances in High-Entropy Alloys)
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Abstract

This study reports the results of the addition of diamonds in the sintering process of a FCC-structured CoCrFeNiMo high-entropy alloy. The effect of raw powder states such as elemental mixed (EM) powder, gas atomization (GA) powder and mechanical alloying (MA) powder on the uniformity of constituent phase was also investigated. Examination of microstructure and evaluation of mechanical properties of the composites depending on the mixing processes were performed. As a result, GA+MA powder composite showed the highest mechanical properties. The experimental results indicated that the powder manufacturing method was an essential parameter to determine the quality of HEA/diamond composites such as the uniformity of phase and binding behavior. View Full-Text
Keywords: high-entropy alloy; diamond; composite; powder metallurgy; spark plasma sintering high-entropy alloy; diamond; composite; powder metallurgy; spark plasma sintering
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Zhang, M.; Zhang, W.; Liu, F.; Peng, Y.; Hu, S.; Liu, Y. Effect of Binding and Dispersion Behavior of High-Entropy Alloy (HEA) Powders on the Microstructure and Mechanical Properties in a Novel HEA/Diamond Composite. Entropy 2018, 20, 924.

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