多主元高熵合金材料的研究进展

Research Progress of High-entropy Alloys Materials with Multi-principal Element

多主元高熵合金作为近期新研发的新结构多主元合金材料,与以往合金设计理念不同的是,它打破了旧的合金设计思路,具有多主元(超过5种)并且各个主元原子分数低于35%。高熵合金的结构和特性与旧理念下设计的合金相比有较大的差别。在对高熵合金的结构、工艺性能、含义和现阶段的研究水平进行了重点阐述的基础上,针对多主元高熵合金的定义、制备方法、结构特点、性能特点进行分析和研究总结,重点分析了多主元高熵合金在结构上的微观简单化、纳米和非晶态以及热力学角度相对稳定性,探讨了多主元高熵合金的耐磨耐蚀、耐高温、高强度等性能特点,结合目前国内外多主元高熵合金的研究进展,对高熵合金的发展做了进一步的展望。

The high-entropy alloys with multi-principal element was the latest developed new type of alloy materials,which was different with the original alloys design concept and broke the concept of traditional alloys design,it had more than five principal components and each element had an atom fraction which was less than 35%.The structure and properties of high-entropy alloys had a great difference compared with the traditional designed alloys.It was mainly presented that structure,process performance,meaning,present researching level,and it was analyzed and summarized that the definition,preparation methods,structural characteristics and performance characteristics of high-entropy alloys with multi-principal element.We focused on the micro simplification,nano and amorphous state,and thermodynamic relative stability of high-entropy alloys with multi-principal element,and discussed the performance characteristics of high-entropy alloys with multi-principal element,such as wear resistance,corrosion resistance,high temperature resistance,high strength and so on.Combined with the research progress of high-entropy alloys with multi principal element at home and abroad,the development of high-entropy alloys was further prospected.