Guo Jinquan, Tang Chaozhongzheng, Lai Huan Sheng
School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350108, China.
Fujian Key Laboratory of Force Measurement, Fujian Metrology Institute, Fuzhou 350108, China.
Materials (Basel). 2022 Feb 15;15(4):1444. doi: 10.3390/ma15041444.
High-entropy alloys have good application prospects in nuclear power plants due to their excellent mechanical properties and radiation resistance. In this paper, the microstructure of the CoCrNi.Al.Ti high-entropy alloy was researched using metallurgical microscopy, X-ray diffraction, and scanning electron microscopy. The mechanical properties were tested using a Vickers microhardness tester and a tensile testing machine, respectively. The results showed that CoCrNi.Al.Ti had a single-phase, disordered, face-centered, cubic solid-solution structure and was strengthened by solid solution. The alloy lattice parameter and density were estimated as 0.304 nm and 7.89 g/cm, respectively. The test results indicated that the alloy had satisfactory mechanical properties with yield stress and tensile strength of about 530 MPa and 985 MPa, respectively.
高熵合金因其优异的力学性能和抗辐射性能在核电站中具有良好的应用前景。本文采用金相显微镜、X射线衍射和扫描电子显微镜对CoCrNi.Al.Ti高熵合金的微观结构进行了研究。分别使用维氏显微硬度计和拉伸试验机对力学性能进行了测试。结果表明，CoCrNi.Al.Ti具有单相、无序、面心立方固溶体结构，并通过固溶强化。合金的晶格参数和密度分别估计为0.304 nm和7.89 g/cm。测试结果表明，该合金具有令人满意的力学性能，屈服应力和抗拉强度分别约为530 MPa和985 MPa。
