Статья

An integration study of corrosion and mechanical behaviors of Ti-/Zr-/Hf-doped cobalt-based high-entropy alloys

Wei WangDepartment of Chemical Engineering, Northeast Electric Power University, Jilin 132012, ChinaWangzhong MuDepartment of Materials Science and Engineering, KTH Royal Institute of Technology, SE-100 44 Stockholm, SwedenMing HanDepartment of Chemical Engineering, Northeast Electric Power University, Jilin 132012, ChinaYi ZhangDepartment of Chemical Engineering, Northeast Electric Power University, Jilin 132012, ChinaNan WangDepartment of Chemical Engineering, Northeast Electric Power University, Jilin 132012, ChinaWenda ZhangSchool of Materials Science and Engineering, North University of China, 030051 Taiyuan, ChinaZhou LiCollege of Medical Information and Artificial Intelligence, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250117, ChinaZhankun WengGuangdong Provincial Key Laboratory of Industrial Intelligent Inspection Technology, Foshan University, Foshan 528000, ChinaPeter K. LiawDepartment of Materials Science and Engineering, The University of Tennessee, Knoxville, TN 37996-2200, United States

2025en

ABI

Аннотация

• A novel high entropy alloy system has been designed with superb mechanical property and corrosion resistance. • Effect of Ti/Zr/Hf on microstructure and corrosion resistance of novel dual phase high entropy alloys have been investigated. • A synergic study of calculation of phase diagram (CALPHAD), microstructure characterization, mechanical properties and corrosion resistance tests have been performed in a novel alloy recipe. Dual-phase cobalt-based entropic alloys doped with Ti-/Zr-/Hf have been investigated in the present work. Thermodynamic calculations have been conducted to predict the phase evolution. The effect of two types of processes (homogenization and cryogenic treatment) on microstructures and properties have been comprehensively analyzed. The compositions and microstructures of the designed alloys in different states have been investigated using multiple techniques. Electrochemical corrosion behaviors at room temperature, high-temperature oxidation behaviors at 600 °C, 800 °C, and 1000 °C, as well as the hardness and compression tests, have been systematically performed. The Ti-doped cobalt-based entropic alloy demonstrated excellent overall properties, including strong electrochemical corrosion resistance, high-temperature oxidation resistance, and a combination of high strength and ductility. The phase map from electron backscatter diffraction (EBSD) indicated that Ti has weaker stability for the formation of the C14-Laves phase compared to the alloying effects of Zr and Hf. The characterization results align with the thermodynamic calculations. This work paves a way for establishing material design strategies to develop advanced alloys with superior performance

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Идентификаторы

DOI: 10.1016/j.matdes.2025.114230

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar