Investigation of Hot Deformation Behavior of 20Kh13 Steel Through Compression Tests
Keywords:
hot deformation, dynamic recrystallization, Zener – Hollomon parameterAbstract
The hot deformation behavior of a 20Kh13 (0.2 C–13 Cr) steel was investigated through compression test using Gleeble-3800 thermal-mechanical simulator within the temperature range of 900–1150 °C and the strain rate range of 0.01–10 s−1. The equation of flow stress as a function of Zener–Hollomon parameter Z was obtained. The critical Zvalue was determined below which dynamic recrystallization may occur during hot deformation.
References
Laasraoui, A. Prediction of steel flow stresses at high temperature and strain rates / A. Laasraoui, J.J. Jonas // Metall. Trans. A. – 1991. – No. 22. – P. 1545–1558.
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.
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.
Sellars, C.M. La relation entre la résistance et la structure dans la deformation à chaud / C.M. Sellars, W.J.McG. Tegart // Mémories Scientifiques Rev. Métallurg. – 1966. – No. 63. – P. 731–746.
