高熵合金的设计理念开启了合金设计的新纪元，但当前的研究主要集中探讨新型高熵合金设计和制备工艺、显微组织、力学性能及其微观机制，忽视了特定工业环境中的使役性能研究。本项目针对石油石化工业中管道和装备在含硫环境中的合金需求，选用Ti0.3(CoCrFeNi)0.7高熵合金为研究对象。利用真空电弧熔炼法制备高熵合金铸材，表征其显微结构及力学性能。在此基础上，系统研究高熵合金在石油石化工业中典型的含硫介质中的环境损伤行为，主要围绕点蚀和应力腐蚀开裂两大失效形式开展深入研究，探讨高熵合金的显微结构与其耐蚀性能的本构关系，以及高熵合金在石油石化工业中的应用前景。这对于应对石油石化工业中的材料需求和推动高熵合金的工业应用有着非常重要的意义。

The design concept of high-entropy alloys has opened a new era of alloy design, but the current research mainly focuses on the design and fabrication process, microstructure, mechanical properties and micro-mechanism of new high-entropy alloys, ignoring the service performance in specific industrial environments. In this project, Ti0.3(CoCrFeNi)0.7 high-entropy alloy was selected as the research object, and the sulfur-containing environment in petroleum and petrochemical industry was selected as the studied environment. High-entropy alloy castings will be prepared by vacuum arc melting, and their microstructures and mechanical properties will be characterized. On this basis, the environmental damage behavior of high-entropy alloys in typical sulfur-containing media in petroleum and petrochemical industry will be systematically studied. Especially, two failure modes (pitting corrosion and stress corrosion cracking) will be mainly studied. The constitutive relationship between the microstructure and corrosion resistance of high-entropy alloys will be discussed, and the application prospect of high-entropy alloys in petroleum and petrochemical industry will be also discussed. It is very important for the present project to meet the material demand in petroleum and petrochemical industry and promote the industrial application of high-entropy alloys.