高熵合金（HEA）粉末的结合与分散行为对新型HEA/金刚石复合材料微观结构和力学性能的影响

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

作者信息

Zhang Mingyang, Zhang Wei, Liu Fangzhou, Peng Yingbo, Hu Songhao, Liu Yong

机构信息

Powder Metallurgy Research Institute, Central South University, Changsha 410083, China.

College of Engineering, Nanjing Agricultural University, Nanjing 210031, China.

出版信息

Entropy (Basel). 2018 Dec 4;20(12):924. doi: 10.3390/e20120924.

DOI:10.3390/e20120924

PMID:33266648

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7512511/

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.

摘要

本研究报告了在面心立方结构的CoCrFeNiMo高熵合金烧结过程中添加金刚石的结果。还研究了原始粉末状态（如元素混合（EM）粉末、气体雾化（GA）粉末和机械合金化（MA）粉末）对组成相均匀性的影响。根据混合工艺对复合材料的微观结构进行了检查，并对其力学性能进行了评估。结果表明，GA+MA粉末复合材料具有最高的力学性能。实验结果表明，粉末制造方法是决定高熵合金/金刚石复合材料质量（如相的均匀性和结合行为）的关键参数。