多主元高熵合金的凝固组织及晶粒细化进展

应泽辰; 高妞; 谢伦杰; 程奎; 马县能; 杨力; 樊自田; 刘鑫旺

doi:10.15980/j.tzzz.2021.08.004

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多主元高熵合金的凝固组织及晶粒细化进展
Progress in Solidification Microstructures and Grain Refinement of Multi-principal-element High-entropy Alloys
2021年41卷第8期页码：944-951
纸质出版日期： 2021 ，
DOI： 10.15980/j.tzzz.2021.08.004

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应泽辰, 高妞, 谢伦杰, 等. 多主元高熵合金的凝固组织及晶粒细化进展[J]. 特种铸造及有色合金杂志, 2021,41(8):944-951.

Ying Zechen, Gao Niu, Xie Lunjie, et al. Progress in Solidification Microstructures and Grain Refinement of Multi-principal-element High-entropy Alloys[J]. Special Casting & Nonferrous Alloys, 2021,41(8):944-951.
应泽辰, 高妞, 谢伦杰, 等. 多主元高熵合金的凝固组织及晶粒细化进展[J]. 特种铸造及有色合金杂志, 2021,41(8):944-951. DOI： 10.15980/j.tzzz.2021.08.004.

Ying Zechen, Gao Niu, Xie Lunjie, et al. Progress in Solidification Microstructures and Grain Refinement of Multi-principal-element High-entropy Alloys[J]. Special Casting & Nonferrous Alloys, 2021,41(8):944-951. DOI： 10.15980/j.tzzz.2021.08.004.

摘要

多主元高熵合金将成分设计范围延伸到多元相图纵深区域

其没有明确的溶剂和溶质区别

因此此类合金具有更加复杂的成分、独特的原子结构和高混合熵

表现出很多不同于传统固溶体的独特性能。这些独特特征也决定了多主元高熵合金的凝固行为区别于传统合金

尤其是溶质再分配、凝固组织形成和晶粒细化方法等方面。从多主元高熵合金的成分角度出发

主要综述了典型多主元高熵合金体系的凝固组织特征、成分偏析和晶粒细化方法

并对多主元高熵合金凝固行为和组织调控的研究进行了展望。

Abstract

Multi-principal-element high-entropy alloy extends the composition design to the deep regions of the multicomponent phase diagram

which has no clear difference between solvent and solute. Therefore

these alloys have a more complex composition

unique atom structure and high mixing entropy and manifest lots of distinctive properties

determining that the solidification behavior of the multi-principal element high entropy alloy is different from that of the traditional alloy

especially in aspects of solute redistribution

solidification microstructure formation and grain refinement methods. Based on the complex compositions of multi-principal-element high entropy alloys

the solidification structure

composition segregation and methods of grain refinement of some typical systems were mainly reviewed

and the future research on solidification behaviors and microstructure control was prospected.