The influence of the heating temperature on the kinetics of the austenite dissolution of high-carbon steel C2Dv

Authors

DOI:

https://doi.org/10.30838/J.PMHTM.2413.240418.34.103

Keywords:

kinetics of austenite transformation, structure, wire rod, high-carbon steel, cooling rate

Abstract

Formulation of the problem. Modern trends in the construction industry make this industry one of the main consumers of high-strength cold-deformed steel products. The high requirements imposed on the strength classes of such reinforcement (1 670, 1 770, 1 860 and 2 000 MPa) necessitate the use of rutile rolled products with a carbon content of 0,8...0,9 % in diameter 8,0...14,0 mm with the value of the temporary rupture resistance is not less than 1 150 MPa and a high level of plastic indicators (δ10 ≥ 10 %, y ≥ 30 %). In practice, when cooling is rolled with an increase in its diameter, the effect of the scale factor is manifested – the actual cooling rate is reduced, and in order to achieve the required structural state of steel, it is necessary to search for reserve possibilities for increasing the stability of the supercooled austenite and adapting the cooling rates to the operating conditions of the operating Purpose. Investigation of the influence of the heating temperature on the stability of austenite and the change the kinetics of decomposition of high-carbon vanadium-containing steel under continuous cooling with different rates. Results. The features of the kinetics of the decomposition of austenite and the regularities in the formation of the structure of vanadium-containing steel С82DV heated to a temperature of 1 040 °C and subjected to continuous cooling at various rates have been studied. Heating of С82DV steel to a temperature of 1 040 °C allows us to somewhat lower the temperature of the onset of the diffusion decomposition of austenite (Аr1), as a result of which the degree of dispersion of perlite increases, and the actual cooling rate increases with all other conditions being equal. The most rational intervals of air cooling rates for С82DV steel are established, which allow to ensure formation of at least 90 % of sorbitol-like perlite in the structure of steel, exclude the appearance of secondary cementite, and also structures formed by intermediate and shear mechanisms.

Author Biographies

E. V. Parusov, Iron and Steel Institute named after Z.I. Nekrasov of the National Academy of Sciences of Ukraine

Ph. D., Sen. Res.

A. P. Klimenko, Ukrainian State University of Chemical Technology

Ph. D., Sen. Res.

V. A. Lutsenko, Iron and Steel Institute named after Z. I. Nekrasov of the National Academy of Sciences of Ukraine

Dr. Sc.(Tech.), Sen. Res.

I. N. Chuiko, Iron and Steel Institute named after Z. I. Nekrasov of the National Academy of Sciences of Ukraine

Ph. D.

L. V. Sahura, Iron and Steel Institute named after Z. I. Nekrasov of the National Academy of Sciences of Ukraine

Ph. D.

References

Гуляев А. П. Металловедение / А. П. Гуляев – Москва : Металлургия, 1986. – 542 с.

Новиков И. И. Теория термической обработки / И. И. Новиков. – Москва : Металлургия, 1978. – 392 с.

Парусов Э. В. Влияние вида обработки на величину аустенитного зерна высокоуглеродистой стали / Э. В. Парусов, В. В. Парусов, Л. В. Сагура, А. И. Сивак // Фундаментальные и прикладные проблемы черной металлургии. – 2014. – Вып. 28. – С. 296−299.

Термическая обработка строительной стали повышенной прочности / [В. И. Большаков, К. Ф. Стародубов, М. А. Тылкин]. – Москва : Металлургия, 1977. – 200 с.

Штремель М. А. Металловедческое обоснование совершенствования металлургической технологии. Перспективы качества стали / М. А. Штремель // Черная металлургия России и стран СНГ в ХХI веке. – Москва : Металлургия, 1994. – Т. 4. – С. 159−162.

Термомеханическая обработка проката из непрерывнолитой заготовки малого сечения : монография / [В. В. Парусов, А. К. Белитченко, Н. А. Богданов и др.]. – Запорожье : ЗГУ, 2000. – 142 с.

Богданов Н. А. Совершенствование оборудования и технологии при производстве проката на мелкосортно-проволочном стане 320/150 Молдавского металлургического завода / Н. А. Богданов, А. Б. Сычков, А. Н. Савьюк // Металлург. – 1995. – № 1. – С. 27−28.

Теоретические и технологические основы производства высокоэффективных видов катанки / [В. В. Парусов, А. Б. Сычков, Э. В. Парусов]. – Днепропетровск : Арт-пресс, 2012. – 376 c.

Э. В. Парусов. Разработка режима двустадийного охлаждения катанки из стали С80D2, микролегированной бором и ванадием / Э. В. Парусов, В. В. Парусов, Л. В. Сагура, А. И. Сивак, А. И. Клименко, А. Б. Сычков // Металлургическая и горнорудная промышленность. – 2011. – № 3 – С. 53−56.

Дифференциально-термический анализ и технологии термической обработки / [А. П. Клименко, А. И. Карнаух, А. И. Буря и др.] – Днепропетровск : Пороги, 2008. – 323 с.

Парусов Э. В. Особенности кинетики распада аустенита и закономерности формирования структуры стали С82DCr при непрерывном охлаждении / Э. В. Парусов, С. И. Губенко, А. П. Клименко, И. Н. Чуйко, Л. В. Сагура // Вестник ПГАСА. – 2017. – № 6. – С. 27–36.

Парусов Э. В. Особенности кинетики распада аустенита и закономерности формирования структуры стали C82DCrV при непрерывном охлаждении / Э. В. Парусов, С. И. Губенко, А. П. Клименко, И. Н. Чуйко, Л. В. Сагура // Вестник ПГАСА. – 2018. – № 1. – С. 34–44.

Parusov E. V. Development of thermomechanical treatment of coil rolled products made of steel С86D micro-alloyed with boron / E. V. Parusov, V. V. Parusov, A. B. Sychkov, A. P. Klimenko, L. V. Sagura, A. I. Sivak // Metallurgical and Mining Industry. − № 6. – 2016. – Pp. 70–74.

Parusov E. Influence of boron on forming efficient structure of rolled steel and increase its technological plasticity at drawing / Е. Parusov, A. Sychkov, S. Gubenko, M. Ambrazhey // Scientific Journal of the Ternopil National University. – 2016. – № 2. – Pp. 99–108.

REFERENCES

Gulyayev A.P. Metallovedeniye [Metallography]. Moscow : Metallurgy, 1986, 542 p. (in Russian).

Novikov I. I. Teoriya termicheskoy obrabotki [Theory of heat treatment]. Moscow : Metallurgy, 1978, 392 p. (in Russian).

Parusov E.V., Parusov V.V., Sagura L.V. and Sivak A.I. Vliyaniye vida obrabotki na velichinu austenitnogo zerna vysokouglerodistoy stali [Influence of the type of treatment on the value of austenite grain of high-carbon steel]. Fundamentalnyye i prikladnyye problemy chernoy metallurgii [Fundamental and applied problems of ferrous metallurgy]. 2014, no. 28, pp. 296–299. (in Russian).

Bolshakov V.I., Starodubov K.F. and Tylkin M.A. Termicheskaya obrabotka stroitelnoy stali povyshennoy prochnosti [Heat treatment of high-strength structural steel]. Moscow : Metallurgy Publ., 1977, 200 p. (in Russian).

Shtremel M.A. Metallovedcheskoye obosnovaniye sovershenstvovaniya metallurgicheskoy tekhnologii. Perspektivy kachestva stali [Metallurgical substantiation of perfection of metallurgical technology. Prospects for the quality of steel]. Chernaya metallurgiya Rossii i stran SNG v ХХI veke [Ferrous Metallurgy in Russia and the CIS in the 21st Century]. Moscow : Metallurgy Publ., 1994, vol. 2, pp. 159−162. (in Russian).

Parusov V.V., Belitchenko A.K. and Bogdanov N.A. Termomekhanicheskaya obrabotka prokata iz nepreryvnolitoy zagotovki malogo secheniya [Thermomechanical treatment of rolled products from a continuous cast piece of a small cross-section]. Zaporozhye : ZGU Publ., 2000, 142 p. (in Russian).

Bogdanov N.A., Sychkov A.B. and Savyuk A.N. Sovershenstvovaniye oborudovaniya i tekhnologii pri proizvodstve prokata na melkosortno-provolochnom stane 320/150 Moldavskogo metallurgicheskogo zavoda [Perfection of equipment and technology in the production of rolled products on a small-grade wire mill 320/150 of the Moldavian Metallurgical Plant]. Metallurg [Metallurgist]. 1995, no 1, pp. 27−28. (in Russian).

Parusov V.V., Sychkov A.B. and Parusov E.V. Teoreticheskiye i tekhnologicheskiye osnovy proizvodstva vysokoeffektivnykh vidov katanki [Theoretical and technological foundations for the production of high-efficiency wire rod]. Dnepropetrovsk : Art-press Publ., 2012, 376 p. (in Russian).

Parusov E.V., Parusov V.V., Sagura L.V., Sivak A.I., Klimenko A.I. and Sychkov A.B. Razrabotka rezhima dvustadiynogo okhlazhdeniya katanki iz stali C80D2, mikrolegirovannoy borom i vanadiyem [Development of a two-stage cooling mode for wire rod made of C80D2 steel, microalloyed with boron and vanadium]. Metallurgicheskaya i gornorudnaya promyshlennost [Metallurgical and mining industry]. 2011, no 3, pp. 53−56. (in Russian).

Klimenko A.P., Karnaukh A.I. and Burya A.I. Differentsialno-termicheskiy analiz i tekhnologii termicheskoy obrabotki [Differential Thermal Analysis and Heat Treatment Technologies]. Dnepropetrovsk : Porogi Publ., 2008, 323 p. (in Russian).

Parusov E.V., Gubenko S.I., Klimenko A.P., Chuyko I.N. and Sagura L.V. Osobennosti kinetiki raspada austenita i zakonomernosti formirovaniya struktury stali С82DCr pri nepreryvnom okhlazhdenii [Features of the kinetics of the decay of austenite and the regularities in the formation of the structure of С82DCr steel under continuous cooling]. Vestnik PGASA [Herald of the PSACA]. 2017, no 6, pp. 27–36. (in Russian).

Parusov E.V., Gubenko S.I., Klimenko A.P., Chuyko I.N. and Sagura L.V. Osobennosti kinetiki raspada austenita i zakonomernosti formirovaniya struktury stali C82DCrV pri nepreryvnom okhlazhdenii [Features of kinetics of austenite decomposition and regularities in the formation of the structure of C82DCrV steel under continuous cooling]. Vestnik PGASA [Herald of the PSACA]. 2018, no 1, pp. 34–44. (in Russian).

Parusov E.V., Parusov V.V., Sychkov A.B., Klimenko A.P., Sagura L.V. and Sivak A.I. Development of thermomechanical treatment of coil rolled products made of steel С86D micro-alloyed with boron. Metallurgical and Mining Industry, no. 6, 2016, pp. 70-74. (in English).

Parusov Е., Sychkov A., Gubenko S. and Ambrazhey M. Influence of boron on forming efficient structure of rolled steel and increase its technological plasticity at drawing. Scientific Journal of the Ternopil National University, 2016, no. 2, pp. 99–108. (in English).

Published

2018-04-10