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Production of high-entropy nitrogen-doped CoCrFeNiMn alloy by selective laser melting
https://doi.org/10.22349/1994-6716-2025-121-1-47-58
Abstract
The paper presents the research results on high-entropy CoCrFeNiMnNx alloy obtained by selective laser melting. Powders of high-entropy alloy CoCrFeNiMnNx (with calculated nitrogen content x = 0.1 wt.%, 0.2 wt.%, 0.5 wt.%) are manufactured by mechanical alloying followed by plasma spheroidization. Alloys mechanical properties and its compaction by selective laser melting were investigated at room and cryogenic temperatures. Alloys with nitrogen content of 0.1 and 0.2 wt.% show an increase in mechanical properties at decreasing temperature. The conditional yield strength increased by 27.2 and 63.3%, the ultimate strength by 30.8 and 52.7%, respectively. The study was carried out with the financial support of the Ministry of Science and Higher Education of the Russian Federation (Grant Agreement No 075-03-2024-004).
Keywords
high-entropy alloy,
selective laser melting,
powder metallurgy,
mechanical alloying,
additive technologies
Supporting agencies: he study was carried out with the financial support of the Ministry of Science and Higher Education of the Russian Federation (Grant Agreement No 075-03-2024-004).
About the Authors
E. V. Volokitina
ФГАОУ ВО «Санкт-Петербургский политехнический университет Петра Великого»
Russian Federation
Russian Federation
29 Polytekhnicheskaya St, 195251 St Petersburg
L. V. Razumova
ФГАОУ ВО «Санкт-Петербургский политехнический университет Петра Великого»
Russian Federation
Russian Federation
Cand. Sc. (Eng),
29 Polytekhnicheskaya St, 195251 St Petersburg
N. E. Ozerskoy
ФГАОУ ВО «Санкт-Петербургский политехнический университет Петра Великого»
Russian Federation
Russian Federation
29 Polytekhnicheskaya St, 195251 St Petersburg
E. V. Borisov
ФГАОУ ВО «Санкт-Петербургский политехнический университет Петра Великого»
Russian Federation
Russian Federation
Cand. Sc. (Eng),
29 Polytekhnicheskaya St, 195251 St Petersburg
N. G. Razumov
ФГАОУ ВО «Санкт-Петербургский политехнический университет Петра Великого»
Russian Federation
Russian Federation
Dr. Sc. (Eng),
29 Polytekhnicheskaya St, 195251 St Petersburg
A. A. Popovich
Peter the Great St Petersburg Polytechnic University
Russian Federation
Russian Federation
Dr. Sc. (Eng),
29 Polytekhnicheskaya St, 195251 St Petersburg
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Review
For citations:
Volokitina E.V., Razumova L.V., Ozerskoy N.E., Borisov E.V., Razumov N.G., Popovich A.A. Production of high-entropy nitrogen-doped CoCrFeNiMn alloy by selective laser melting. Voprosy Materialovedeniya. 2025;(1(121)):47-58. (In Russ.) https://doi.org/10.22349/1994-6716-2025-121-1-47-58
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