高熵合金因其多主元特性突破了传统合金的设计局限，展现出优异的力学性能。 近年来研究发现，高熵合 金中普遍存在化学有序现象。 本文综述了化学短程有序的形成机制、调控手段、表征技术及其对力学性能的影响。 发现 合金中化学有序的形成受混合焓和原子尺寸等多种因素影响；热处理工艺、掺杂间隙原子以及辐照处理等都能调控合 金中的化学有序度；X射线衍射、透射电子显微镜技术以及计算机模拟是表征化学有序的常用方法；合金中的化学有序 主要通过影响位错行为和层错能从而影响其力学性能。 深入理解化学有序，可为通过成分设计与加工工艺提高高熵合 金性能提供重要基础。

High-entropy alloys overcome the design limitations of traditional alloys because of their multiple principal element characteristics and excellent mechanical properties. Recent studies have shown that chemical ordering is common in high-entropy alloys. In this paper, the formation mechanism, regulation methods, characterization techniques and their effects on the mechanical properties of chemical short-range order materials are reviewed. The formation of chemical order in the alloy is affected by many factors, such as the mixing enthalpy and atomic size. The degree of chemical order in an alloy can be controlled by heat treatment, interstitial atom doping and irradiation treatment. X-ray diffraction, transmission electron microscopy and computer simulation are common methods used to characterize chemical order. The chemical order of an alloy affects its mechanical properties by affecting its dislocation behavior and stacking fault energy. An in-depth understanding of chemical order provides an important basis for improving the performance of high-entropy alloys through composition design and processing technology.