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In this research, a new medium-entropy alloy with an equiatomic composition of FeCuNi was designed using a phase diagram (CALPHAD) technique. The FeCuNi MEA was produced from pure iron, copper, and nickel powders through mechanical alloying. The alloy powders were consolidated via a high-pressure torsion process to obtain a rigid bulk specimen. Subsequently, annealing treatment at different conditions was conducted on the four turn HPT-processed specimen. The microstructural analysis indicates that an ultrafine-grained microstructure is achieved after post-HPT annealing, and microstructural evolutions at various stages of processing were consistent with the thermodynamic calculations. The results indicate that the post-HPT-annealed microstructure consists of a dual-phase structure with two FCC phases: one rich in Cu and the other rich in Fe and Ni. The kernel average misorientation value decreases with the increase in the annealing time and temperature, indicating the recovery of HPT-induced dislocations.
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참고문헌 (24)
참고문헌 신청
Ahad Shafiee / 2020 / Development and Microstructural Characterization of a New Wrought High Entropy Superalloy / Metals and Materials International 26(5):591~602
Anthoula Poulia / 2019 / Evaluation of the Microstructural Aspects, Mechanical Properties and Dry Sliding Wear Response of MoTaNbVTi Refractory High Entropy Alloy / Metals and Materials International 25(6):1529~1540
Xu Chen / 2019 / Evolution of Microstructures and Properties in AlxCrFeMn0.8Ni2.1 HEAs / Metals and Materials International 25(5):1135~1144
P. Asghari-Rad / 2018 / Mater. Sci. Eng. A 744:610
N. T. C. Nguyen / 2019 / Mater. Sci. Eng. A 764:138198
Anthoula Poulia / 2019 / Evaluation of the Microstructural Aspects, Mechanical Properties and Dry Sliding Wear Response of MoTaNbVTi Refractory High Entropy Alloy / Metals and Materials International 25(6):1529~1540
Xu Chen / 2019 / Evolution of Microstructures and Properties in AlxCrFeMn0.8Ni2.1 HEAs / Metals and Materials International 25(5):1135~1144
P. Asghari-Rad / 2018 / Mater. Sci. Eng. A 744:610
N. T. C. Nguyen / 2019 / Mater. Sci. Eng. A 764:138198
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