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过程工程学报 ›› 2019, Vol. 19 ›› Issue (3): 447-455.DOI: 10.12034/j.issn.1009-606X.218259

• 综述 • 上一篇    下一篇

高熵合金粉体制备及应用研究进展

权 峰1, 项厚政1, 杨 磊1, 吴其辉1, 冒爱琴1,2*, 俞海云1,2   

  1. 1. 安徽工业大学材料科学与工程学院,安徽 马鞍山 243002 2. 安徽工业大学冶金减排与资源综合利用教育部重点实验室,安徽 马鞍山 243002
  • 收稿日期:2018-07-27 修回日期:2018-10-30 出版日期:2019-06-22 发布日期:2019-06-20
  • 通讯作者: 冒爱琴 maoaiqinmaq@163.com

Research progress in preparation and application of high-entropy-alloy powders

Feng QUAN1, Houzheng XIANG1, Lei YANG1, Qihui WU1, Aiqin MAO1,2*, Haiyun YU1,2   

  1. 1. School of Materials Science and Engineering, Anhui University of Technology, Ma'anshan, Anhui 243002, China 2. Key Laboratory of Metallurgical Emission Reduction & Resource Recycling, Ministry of Education, Anhui University of Technology, Ma'anshan, Anhui 243002, China
  • Received:2018-07-27 Revised:2018-10-30 Online:2019-06-22 Published:2019-06-20
  • Contact: MAO Ai-qin maoaiqinmaq@163.com

摘要: 高熵合金是近几年发展起来的新型合金,由于其优异的性能,如高延展性、高强度、优异的耐磨性、优异的耐蚀性和优异的高温稳定性,已成为热点材料之一。高熵合金粉体作为制备块体、涂层、薄膜材料及其它功能材料的原料,有着广阔的应用前景,但目前对高熵合金粉体尤其是高熵合金纳米粉体的研究较少。本工作根据当前高熵合金的研究进展,对高熵合金相形成的判据进行了划分,主要包括混合熵判据、混合焓判据、Ω判据和Hume?Rothery固溶理论判据。通过对各判据的总结,阐述了高熵合金固溶体相的形成规律,综述了高熵合金超细粉体和纳米粉体的制备方法,主要包括机械合金化法、气/水雾化法、化学还原法、碳热震荡法、等离子电弧放电法和扫描探针光刻技术,分析比较了不同方法的优缺点和应用前景,指出了高熵合金领域当前存在的问题和相应的解决方法,并对未来的发展作了展望。

关键词: 高熵合金, 固溶体判据, 高熵合金金粉体, 制备方法, 应用前景

Abstract: As a kind of new alloys, high entropy alloys have become one of the hotspot materials due to their outstanding remarkable physicochemical performances such as high ductility and strength, excellent wear resistance, outstanding corrosion resistance, and superior high temperature stability in recent years. Among these, high-entropy-alloy (HEA) powders have a much wider application, which not only can be used as raw material in the preparing of HEAs bulk, coatings and thin film materials, but also used as functional materials. However, there are few studies on HEA powders, especially on HEA nanoparticles. In this work, according to the current research progress of HEAs, the criterions for solid solution phase formation in HEAs were classified, which mainly include mixed entropy criterion, mixed enthalpy criterion, Ω criterion and Hume?Rothery solid solution theory criterion. Through the summary of each criterion, the solid-solution phase formation rules were also summarized. It provided a theoretical basis for more accurate prediction of the formation law of high entropy alloy solid solution phase and the design of new HEAs. Moreover, the preparation methods for HEA powders were reviewed. The HEA ultrafine powders were produced by mechanical alloying method and gas/water atomization method, and also the preparation methods of the HEA nanoparticles include chemical reduction method, carbothermal shock method, plasma arc discharge method and scanning probe lithography. In addition, the advantages and disadvantages of each method were also discussed, and these offered a wide range of flexible approaches for different type of applications of HEA powders. At the same time, current problems in the field of HEA powders research were pointed out, and the future developments were also prospected. This review had certain guiding significance for the expansion of the application of HEA powder subjects in the future direction.

Key words: high entropy alloys, solid solution criterion, high-entropy- alloy powders, preparation method, application prospects