高熵非晶合金设计、制备及性能的研究进展  

Research Progress on the Design,Preparation and Properties of High-entropy Metallic Glasses

作　　者：种凯 张志彬 邹勇[1] 梁秀兵 CHONG Kai;ZHANG Zhibin;ZOU Yong;LIANG Xiubing(Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials of Ministry of Education,School of Materials and Engineering,Shandong University,Jinan 250061,China;National Innovation Institute of Defense Technology,Academy of Military Sciences,Beijing 100071,China)

机构地区：[1]山东大学材料与工程学院教育部材料固液结构演化与加工教育部重点实验室,济南250061 [2]军事科学院国防科技创新研究院,北京100071

出　　处：《材料导报》2021年第17期17019-17025,共7页Materials Reports

基　　金：国家重点研发计划项目(2018YFC1902400);国家自然科学基金项目(51975582)。

摘　　要：高熵非晶合金是一种新兴的合金材料,兼具高熵合金成分特征与非晶合金结构特征,因具有优异的机械物理性能与巨大的应用潜力而受到了广泛的关注。目前高熵非晶合金的研究处于起步阶段,本文介绍了高熵非晶合金成分设计的基本依据,着重分析了高熵非晶合金的关键物理参量(混合熵ΔS_(mix)、混合焓ΔH_(mix)、原子错配度δ)等对高熵非晶材料组织结构的影响。当前已开发的高熵非晶合金材料体系有限,制备方法继承了非晶合金与高熵合金的制备特征,其制备手段大致可以分为:液相法、气相法以及固相法。由于其优异的热力学性能,高熵非晶合金有望通过热喷涂手段突破尺寸限制,实现大规模应用。高熵非晶合金性能的研究主要集中在力学性能、耐腐蚀性能、磁性能、非晶形成能力与热稳定性等方面。其中高熵效应对非晶形成能力的影响、高熵非晶合金的结构与热力学特性及高熵非晶合金的异常热稳定性等科学问题亟待解决。本文还展望了基于材料基因工程理念的高熵非晶合金材料体系研究及该类材料的应用前景。High-entropy metallic glasses High-entropy metallic glasses are an emerging class of materials that show promising potential forvarious engineering applications because of their advantageous characteristics of high-entropy alloy composition and amorphous alloy structure.Owing to their excellent mechanical and physical properties,these metallic glasses have recently attracted increased attention.Research on related high-entropy metallic glasses is still in its infancy.In this study,the bases for designing the composition of high-entropy metallic glasses are introduced,and the effects of key physical parameters,such as mixing entropy(ΔS_(mix)),mixing enthalpy(ΔH_(mix)),and atomic mismatch(δ),on the microstructures of high-entropy metallic glasses are comprehensively analyzed.Moreover,the current status of the study of alloys systems,preparation methods,and mechanical and physical properties is discussed and summarized.Material systems of high-entropy metallic glasses that have been developed remain limited.Current methods for preparing high-entropy metallic glasses have inherited the characteristics of those for preparing amorphous alloys and high-entropy alloys.These methods can be roughly divided into liquid-phase preparation,gas-phase preparation,and solid-phase preparation.Owing to their excellent thermodynamic properties,high-entropy amorphous materials are expected to break through the size limit through thermal spraying and achieve large-scale applications.Research on the properties of high-entropy metallic glasses mainly focuses on mechanical properties,corrosion resistance,magnetic properties,amorphous-forming ability,and thermal stability.Among these topics of interest,the influence of high-entropy on the amorphous formation,structure,thermodynamic properties,and abnormal thermal stability of high-entropy metallic glasses must be urgently resolved.Potential topics on studies of material systems of high-entropy metallic glasses on the basis of the concept of material genetic engineering are explored.The

关 键 词：高熵非晶 物理参数 材料体系 性能 

分 类 号：TG139.8[一般工业技术—材料科学与工程]