摘要
高熵合金是近年来发展起来的新型合金材料,突破了传统金属材料仅有1~2种主要组元的限制,通过组元数目的显著增加,合金产生强烈的化学无序效应、显著的迟滞扩散效应及晶格畸变效应,使高熵合金容易获得理想的力学性能,该材料属性特别适用于提高焊接接头的服役性能,应用于焊接领域具有广阔的发展前景。目前,国内外有不少学者尝试把多主元高熵合金应用于焊接领域,文章从焊接材料、焊接方法、焊缝微观组织、焊缝硬度、接头力学性能等方面综述高熵合金在焊接领域的研究现状,揭示高熵合金应用于焊接领域尚需解决的关键科学问题,对该领域未来的研究方向提出了展望。
High-entropy alloy is a new type of alloy developed in recent years, solving the problem of only one or two main components in traditional metal materials. Through significant increase in the number of components,sluggish diffusion effect and severe-lattice-distortion effect are achieved in high-entropy alloys. It is easy for high-entropy alloys to obtain ideal tensile strength and fracture toughness, which are particularly suitable for welding to improve the service performance of welded joints. The application of high-entropy alloys in welding field has broad prospects. At present, many scholars at home and abroad have tried to apply high-entropy alloys with multi-principal elements to the welding field. Therefore, this paper summarizes the development and research status of high entropy alloys in welding field, from the aspects of welding materials, welding methods, microstructure, hardness and mechanical properties. And the key scientific problems to be solved in the application of high-entropy alloys in welding field are provided. Finally, the prospects for future research direction in this field are proposed.
作者
刘德佳
扎学安
李斌
唐延川
胡勇
赵龙志
Liu Dejia;Zha Xuean;Bin Li;Tang Yanchuan;Hu Yong;Zhao Longzhi(School of Materials Science and Engineering,East China Jiaotong University,Nanchang 330013,China;Nanchang Key Laboratory of Advanced Materials&Laser Additive Manufacturing for Vehicles,East China Jiaotong University,Nanchang 330013,China;State Key Laboratory of Performance Monitoring and Protecting of Rail Transit Infrastructure,East China Jiaotong University,Nanchang 330013,China)
出处
《华东交通大学学报》
2022年第3期1-16,共16页
Journal of East China Jiaotong University
基金
国家自然科学基金项目(51805171,51965022)
江西省自然科学基金项目(20192BAB206028)。
关键词
高熵合金
焊接
微观组织
焊缝硬度
力学性能
high-entropy alloy
welding
microstructure
hardness
mechanical properties
