Evolution of structure and mechanical properties at high temperature tempering of medium carbon microalloyed steel

V. M. Farber; Фарбер В. М.; V. A. Khotinov; Хотинов В. А.; O. V. Selivanova; Селиванова О. В.; A. B. Ovsyannikov; Овсянников А. Б.; M. S. Karabanalov; Карабаналов М. С.

doi:10.31857/S0015323023600612

Evolution of structure and mechanical properties at high temperature tempering of medium carbon microalloyed steel

Authors: Farber V.M.¹, Khotinov V.A.¹, Selivanova O.V.¹, Ovsyannikov A.B.¹, Karabanalov M.S.¹
Affiliations:
1. Ural Federal University
Issue: Vol 124, No 8 (2023)
Pages: 756-762
Section: ПРОЧНОСТЬ И ПЛАСТИЧНОСТЬ
URL: https://journals.rcsi.science/0015-3230/article/view/139495
DOI: https://doi.org/10.31857/S0015323023600612
EDN: https://elibrary.ru/QFAESX
ID: 139495

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Abstract

The evolution of the structure and mechanical properties of medium-carbon microalloyed steel after quenching and tempering at 650оС of various durations has been studied. It is shown that the change in the microstructure and softening of steel with an increase in the duration from 2 to 3000 minutes falls on two stages of martensite tempering: medium (stage II) and high-temperature (stage III). Intensive drop of strength properties ~ 100 MPa/min at stage II is replaced by a very inert softening ~ 0.1 MPa/min at stage III. Using TEM, EBSD and X-ray diffraction analysis the evolution of the microstructure was observed and a quantitative estimation of the strengthening components and their relative contribution to the yield strength at different stages of tempering was performed.

Keywords

medium-carbon steels, martensite, softening during tempering, strength properties, hardening mechanisms, dislocation density, carbides, substructure

References

Курдюмов В.Г., Утевский Л.М., Энтин Р.И. Превращения в железе и стали. М.: Наука, 1977. 236 с.
Счастливцев В.М., Мирзаев Д.А., Яковлева И.Л. Структура термически обработанной стали. М.: Металлургия, 1994. 288 с.
Бернст Р. Технология термической обработки сталей. М.: Металлургия, 1981. 608 с.
Гольдштейн М.И., Фарбер В.М. Дисперсионное упрочнение стали. М.: Металлургия, 1979. 208 с.
Гольдштейн М.И., Грачев С.В., Векслер Ю.Г. Специальные стали. М.: МИСиС, 1999. 408 с.
Иванов Ю.Ф., Козлов Э.В. Изотермический отпуск закаленной среднеуглеродистой малолегированной стали. Преобразование дефектной подсистемы // Фунд. пробл. совр. материаловедения. 2004. Т. 1. № 2. С. 21–32.
Liu F., Chen K., Kang C., Jiang Z., Ding S. Effects of V-Nb microalloying on the microstructure and properties of spring steel under different quenching-tempering times // J. Mater. Res. Tech. 2022. V. 19. P. 779–793.
Sun C., Fu P.-X., Ma X.-P., Liu H.-H., Du N.-Y., Cao Y.-F., Liu H.-W., Li D.-Z. Effect of matrix carbon content and lath martensite microstructures on the tempered precipitates and impact toughness of a medium-carbon low-alloy steel // J. Mater. Res. Tech. 2020. V. 9. № 4. P. 7701–7710.
Селиванова О.В., Хотинов В.А., Овсянников А.Б., Хадыев М.С. Деформационное поведение при растяжении стали 20Х3 после закалки и отпуска // МиТОМ. 2022. № 8. С. 15–20.
Lee W.S., Su T.T. Mechanical properties and microstructural features of AISI 4340 high-strength alloy steel under quenched and tempered conditions // J. Mater. Proc. Tech. 1999. V. 87. № 1–3. P. 198–206.
Jiang B., Wu M., Zhang M., Zhao F., Zhao Z., Liu Y. Microstructural characterization, strengthening and toughening mechanisms of a quenched and tempered steel: Effect of heat treatment parameters // Mater. Sci. Eng. A. 2017. V. 707. P. 306–314.
Zhao N., Zhao Q., He Y., Liu R., Liu W., Zheng W., Li L. Strengthening-toughening mechanism of cost-saving marine steel plate with 1000 MPa yield strength // Mater. Sci. Eng. A. 2022. V. 831. P. 142280.
Tkachev E., Borisov S., Belyakov A., Kniaziuk T., Vagina O., Gaidar S., Kaibyshev R. Effect of quenching and tempering on structure and mechanical properties of a low-alloy 0.25C steel // Mater. Sci. Eng. A. 2023. V. 868. P. 144757.
Christien F., Telling M.T.F., Knight K.S. Neutron diffraction in situ monitoring of the dislocation density during martensitic transformation in a stainless steel // Scripta Mater. 2013. V. 68. P. 506–509.
Штремель М.А., Андреев Ю.Г., Козлов Д.А. Строение и прочность пакетного мартенсита. // МиТОМ. 1999. № 4. С. 10–15.
Фарбер В.М., Беленький Б.З., Гольдштейн М.И. Оценка прочности малоуглеродистых низколегированных сталей по структурным данным // ФММ. 1975. Т. 39. № 2. С. 403–409.