Changes in Mechanical Properties, Structure and Phase Composition of 47CrNiMo Industrial Alloy after Aging

УДК 669.018.44

  • Dosym Erbolatuly Sarsen Amanzholov East Kazakhstan University, Ust-Kamenogorsk, Kazakhstan Email: e_dosym@mail.ru
  • Elena V. Korotkova Siberian Federal University, Krasnoyarsk, Russia Email: lena1992-11@mail.ru
  • Lyudmila I. Kveglis Siberian Federal University, Krasnoyarsk, Russia Email: kveglis@list.ru
  • Edgard I. Yakushevsky Siberian Federal University, Krasnoyarsk, Russia Email: yaguar@yandex.ru
  • Gulnara U. Erbolatova East Kazakhstan Technical University named after. D. Serikbaev, Ust-Kamenogorsk, Kazakhstan Email: e.gulnara_77@mail.ru
Keywords: special alloys, 47CrNiMо, aging, X-ray diffraction analysis, diffraction patterns, microhardness, plastic deformation, heat treatment, superplasticity

Abstract

The development of the modern nuclear industry urges for materials capable of operating at high temperatures, high mechanical loads, and in aggressive contact environments. The 47CrNiMo alloy is advisable for nuclear reactors, as it has high resistance to plastic deformation and relaxation resistance under conditions of static and cyclic loading, low elastic hysteresis, high fatigue strength, and high corrosion resistance.

The article presents the results of a study of changes in the mechanical properties, phase composition, and structures of the 47CrNiMo industrial alloy after aging. The methods of X-ray diffraction analysis, microhardness measurements, and diffraction electronic microscopy are used in the study.

The dependence of microhardness on the aging time interval has been established. The ultimate strength and relative elongation of the studied samples are found to be dependent on the time of aging.

The analysis of the 47CrNiMo X-ray diffraction patterns reveals the presence of Frank-Casper phase structures. A cluster model of grain boundaries is proposed on the basis of the conducted analysis.

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Author Biographies

Dosym Erbolatuly, Sarsen Amanzholov East Kazakhstan University, Ust-Kamenogorsk, Kazakhstan

Candidate of Sciences in Physics and Mathematics, Professor of the Department of Physics and Technology

Elena V. Korotkova, Siberian Federal University, Krasnoyarsk, Russia

Postgraduate Student of the Polytechnic Institute

Lyudmila I. Kveglis, Siberian Federal University, Krasnoyarsk, Russia

Doctor of Sciences in Physics and Mathematics, Professor of the Department of Materials Science and Materials Processing Technologies

Edgard I. Yakushevsky, Siberian Federal University, Krasnoyarsk, Russia

Postgraduate Student of the Polytechnic Institute of the Department of Materials Science and Materials Processing Technologies

Gulnara U. Erbolatova, East Kazakhstan Technical University named after. D. Serikbaev, Ust-Kamenogorsk, Kazakhstan

PhD, Associate Professor of the International School of Engineering

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Published
2024-10-07
How to Cite
Erbolatuly D., Korotkova E. V., Kveglis L. I., Yakushevsky E. I., Erbolatova G. U. Changes in Mechanical Properties, Structure and Phase Composition of 47CrNiMo Industrial Alloy after Aging // Izvestiya of Altai State University, 2024, № 4(138). P. 34-41 DOI: 10.14258/izvasu(2024)4-04. URL: http://izvestiya.asu.ru/article/view/%282024%294-04.