Physical and Numerical Modeling of Hot Deformation Behaviour of 20Kh13 Steel
Keywords:
hot deformation, dynamic recrystallization, Zener – Hollomon parameterAbstract
The hot deformation behaviour of 20Kh13 (0.2 C – 13 Cr) steel is investigated through compression test within the temperature range of 900–1150 °C and the strain rate range of 0.01–10 s−1. Physically based mathematical model of hot deformation of the steel involving dynamic recovery and dynamic recrystallization processes is proposed. It may be used to predict the deformation behaviour of the investigated steel at given strain rate and deformation temperature.References
Ахмедьянов, А.М. Исследование деформационного поведения стали 20Х13 в условиях горячей садки / А.М. Ахмедьянов, С.М. Антонов, С.В. Рущиц // Вест. Юж.-Урал. гос. ун-та. Сер. «Металлургия». – 2012. – Вып. 19, № 39 (298). – С. 89–93.
Зюзин, В.И. Сопротивление деформации сталей при горячей прокатке / В.И. Зюзин, М.Я. Бровман, А.Ф. Мельников. – М.: Металлургия, 1964. – 270 с.
Sellars, C.M. La relation entre la résistance et la structure dans la deformation à chaud / C.M. Sellars, W.J. McG. Tegart // Memories Scientifiques Rev. Métallurg. – 1966. – Vol. 63. – P. 731–746.
Estrin, Y. A unified phenomenological description of work hardening and creep based on oneparameter models / Y. Estrin, H. Mecking // Acta Metallurgica. – 1984. – Vol. 32A. – P. 57–70.
Bergström, Y. The application of a dislocation model to the strain and temperature dependence of the strain hardening exponent n in the Ludwik-Hollomon relation between stress and strain in mild steels / Y. Bergström, B. Aronsson // Metallurgical Transactions A. – 1972. – Vol. 3. – P. 1951–1957.
Laasraoui, A. Prediction of steel flow stresses at high temperature and strain rates / A. Laasraoui, J.J. Jonas // Metall. Trans. A. – 1991. – Vol. 22. – P. 1545–1558.
Study on hot deformation behavior of 12%Cr ultra-super-critical rotor steel / B. Wang, W. Fua, Z. Lva, P. Jiang // Materials Science and Engineering A. – 2008. – No. 487. – P. 108–113.
Moreira, A. Prediction of Steel Flow Stresses under Hot Working Conditions / A. Moreira, J. Junior, O. Balancin // Materials Research. – 2005. – Vol. 8, no. 3. – P. 309–315.
Momeni, A. Modeling the initiation of dynamic recrystallization using a dynamic recovery model / A. Momeni, K. Dehghani, G.R. Ebrahimi // Journal of Alloys and Compounds. – 2011. – Vol. 509. – P. 9387– 9393.
McQueen, H.J. Constitutive analysis in hot working / H.J. McQueen, N.D. Ryan // Materials Science and Engineering A. – 2002. – No. 322. – P. 43–63.
