Carbon partitioning and mechanis of bainite reaction in experimental FE-CR-MO-C steel

• Autorzy: Ławrynowicz, Z.
• Języki publikacji: EN

Abstrakty

EN

Carbon partitioning and mechanism of bainite transformation have been studied in Fe-Cr-Mo-C steel using high speed dilatometry backed by thermodynamic analysis. Obtained results confirm the incomplete reaction phenomenon with the cessation of the bainite transformation well before paraequilibrium is achieved. These experimental data indicate that bainitic ferrite forms by a displacive transformation mechanism, but soon afterwards, excess of carbon is partitioned into the residual austenite. The results are discussed in terms of the mechanism of bainite transformation.

Słowa kluczowe

EN

carbon partitioning; mechanism of bainite transformation

• Czasopismo: Journal of Polish CIMAC
• Rocznik: 2012
• Tom: Vol. 7, no 3
• Strony: 167-174
• Opis fizyczny: Bibliogr. 17 poz., rys., tab.

Twórcy

autor

Ławrynowicz, Z.

• University of Technology and Life Sciences, Mechanical Engineering Faculty Department of Materials Science and Engineering av. Kaliskiego 7, 85-789 Bydgoszcz, Poland,

Bibliografia

• [1] Aaronson, H.I., Reynolds, W.T., Shiflet, G.J.,Spanos, G., Bainite Viewed Three Different Ways, Metall. Trans. A, 21A, 1343-1380, 1990.
• [2] Aaronson, H.I., The proeutectoid ferrite and the proeutectoid cementite reactions, In: Aaronson HI, Zackay VF, editors. Decomposition of Austenite by Diffusional Processes. New York: Interscience Publishers, 387–546, 1962.
• [3] Aaronson, H.I., The Mechanism of Phase Transformations in Crystalline Solids, The Institute of Metals, London, 1969, p.270.
• [4] Bhadeshia, HKDH, Christian, JW., Bainite in steels, Metall Trans. A, 21A, 767–797, 1990.
• [5] Caballero, F.G., Miller, M.K., Babu, S.S., Garcia-Mateo, C., Atomic scale observations of bainite transformation in a high carbon high silicon steel, Acta Materialia, 55, 381-390, 2007.
• [6] Chen, J.K., Vandermeer, R.A., Reynolds, W.T., JR., Effect of Alloying Elements upon Austenite Decomposition in Low-C Steels, Metall. Mater. Trans.A, 25A, 1367-1379, 1994.
• [7] Christian J.W., Edmonds D.V., Int. Conf. on Phase Transformations in Ferrous Alloys, A.R. Marder, J.I. Goldstein, ASM, Metals Park, OH, 1984, p.293.
• [8] Dyson D.J., Holmes, B., Effect of alloying additions on the lattice parameter of austenite, J. Iron Steel Inst., 208, 469-474, 1970.
• [9] Hehemann, R.F., Kinsman, K.R., Aaronson, H.I., A debate on the bainite reaction, Metall. Trans., 3, 1077–94, 1972.
• [10] Hillert, M, Höglund, L, Ägren, J., Escape of carbon from ferrite plates in austenite, Acta Metall Mater., 41, 1951–7, 1993.
• [11] Ławrynowicz, Z., Barbacki, A., Carbides precipitation in bainite in an experimental Mo-Cr-VTi steel, Conference Proceedings of the 6-th International Conference "Carbides, Nitrides, Borides, " Pozna_-Ko_obrzeg, pp. 42-47, 1993.
• [12] Ławrynowicz, Z., Ausferritic or Bainitic Transformation in ADI, Proceedings of the 12th International Symposium on Advanced Materials, Paper No: 98, ISAM2011-98, Rawalpindi, Pakistan.
• [13] Ławrynowicz, Z., Decarburisation of bainitic ferrite laths and its influence on the microstructure in Fe-Cr-Si-C steel, Advances in Materials Science, 2011, Vol. 11, No. 2 (28), June pp. 56-64, 2011.
• [14] Ławrynowicz, Z., Affect of decarburisation times of bainitic ferrite laths on the microstructure in Fe-Cr-C steel, Journal of Polish CIMAC, Vol. 6, No. 3, pp. 127-136, 2011.
• [15] Ławrynowicz, Z., Affect of cementite precipitation on the extend of bainite transformation in Fe- Cr-C steel, Advances in Materials Science, Vol. 11, No. 3 (29), pp.13-19, September 2011.
• [16] McLellan, R.B., Dunn, W.W., J.Phys.Chem. Solids, 30, 2631-2637, 1969.
• [17] Reynolds, W.T. et al., An investigation of the Generality of Incomplete Transformation to Bainite in Fe-C-X Alloys, Metall. Trans.A, 21A, 1479-1491, 1990.