Deformation Induced Ferrite Transformation in Microalloyed Steels: Theory and Application

Abstract:

Article Preview

Deformation Induced Ferrite Transformation (DIFT), i.e. transformation occurs during deformation applied in the temperatures above Ar3, has received wider attention since it has been proved to be a very effective way to produce ultrafine grained ferrite in low carbon steels. Although numerous works have been done on this topic in the past decade, the systematic works on DIFT in microalloyed steel, especially on the role of microalloying elements are still lacking compared with those in plain carbon steel. In this paper, the common features of DIFT will reviewed firstly, then an attempt will be made to elucidate the role of microalloying elements (niobium and vanadium) in DIFT, and the application of DIFT technology in microalloyed steels will be presented finally.

Info:

Periodical:

Materials Science Forum (Volumes 561-565)

Main Theme:

Edited by:

Young Won Chang, Nack J. Kim and Chong Soo Lee

Pages:

2491-2508

Citation:

Y. Q. Weng et al., "Deformation Induced Ferrite Transformation in Microalloyed Steels: Theory and Application", Materials Science Forum, Vols. 561-565, pp. 2491-2508, 2007

Online since:

October 2007

Export:

Price:

$38.00

[1] Tamura I, Ouchi C, Tanaka T and Sekine H, Thermomechanical processing of high strength low carbon steels, Butterworth & Co. Ltd, (1988).

DOI: https://doi.org/10.1016/b978-0-408-11034-1.50016-7

[2] Niikura M, Fujioka M, Adachi Y, et. al, New concepts for ultra refinement of grain size in Super Metal Project, J. Mater. Proc. Tech., 2001, 117: 341-346.

[3] Iwahashi Y, Horita Z, Nemoto M, et. al, The process of grain refinement in equal-channel angular pressing, Acta Mater., 1997, 45(11): 4733-4741.

DOI: https://doi.org/10.1016/s1359-6454(97)00100-6

[4] Priestner R, Strain induced γ→αtransformation in the roll gap in carbon and microalloyed steel, Proceedings of an International Conference on the Thermomechanical Processing of Microalloyed Austenite, Metallurgical Society of AIME, Edited by A.J. DeArdo, G.A. Ratz, P.J. Wray, 1981, p.455.

[5] Matsumura Y and Yada H, Evolution of ultra-fine grained ferrite in hot successive deformation, Trans. ISIJ, 1987, 27: 492-498.

DOI: https://doi.org/10.2355/isijinternational1966.27.492

[6] Beynon JH, Gloss R and Hodgson PD, The production of ultra-fine equiaxed ferrite in a low carbon microalloyed steel by thermomechanical treatment, Mater. Forum, 1992, 16: 37-42.

[7] Choo WY, Lee JS, Lee C S et al, Strain induced dynamic transformation of austenite to fine ferrite and it's characteristics, CAMP-ISIJ, 2000, 13: 1144.

[8] Lee S, Kwon D, Lee YK and Kwon O, Transformation strengthening by thermomechanical treatments in C-Mn-Ni-Nb steels, Metall. Mater. Trans. A., 1995, 26A: 1093-1100.

DOI: https://doi.org/10.1007/bf02670605

[9] Dong H, Deformation induced ferrite transformation in microalloyed steels, Workshop on New Generation Steel, The Chinese Society for Metals, Beijing, 2001, p.41.

[10] Sun XJ, On deformation induced ferrite transformation in microalloyed steels, Postdoctoral Research Report, Central Iron & Steel Research Institute, Beijing, (2003).

[11] Yang ZM, Wang RZ, Che YM, et al., The formation of ultra-fine grains structure in plain carbon steel, Proceedings of First International Conference on Advanced Structural Steels (ICASS 2002), Japan, 2002, p.39.

[12] Yada H, Li CM and Yamagata H. Dynamic γ→α transformation during hot deformation in Iron-Nickel-Carbon alloys. ISIJ International 2000; 40(2): 200-206. (13)Li CM, Yada H and Yamagata H. An In-situ X-ray diffraction study of γ→α transformation during hot deformation in Fe-6mass%Ni-0. 0008~0. 29mass%C alloys. ISIJ International 1999; 39(2): 209-211.

DOI: https://doi.org/10.2355/isijinternational.40.200

[14] Li CM, Yada H and Yamagata H. In situ observation of γ→αtransformation during hot deformation in an Fe-Ni alloy by an X-ray diffraction method. Scr Mater 1998; 39(7): 963-967.

DOI: https://doi.org/10.1016/s1359-6462(98)00239-5

[15] Weng YQ, Sun XJ, Dong H. Overview on deformation induced ferrite transformation. In: Proceedings of the International Symposium on Ultrafine Grained Structure 2005, China, 2005: 9.

[16] Dong H, Sun XJ, Liu QY et. al. Deformation induced ferrite transformation: phenomena and theory. Iron and Steel (in Chinese) 2003; 38(10): 56-67.

[17] Weng YQ. Microstructure refinement of structural steel in China. ISIJ International 2003; 43(11): 1675-1682.

DOI: https://doi.org/10.2355/isijinternational.43.1675

[18] Yang P, Cui FE, Fu YY, et al. Dynamic aspects of strain enhanced transformation in Q235 plain carbon steel. Acta Metallurgica Sinica 2001; 37(6): 617-624.

[19] Yang WY, Qi JJ, Sun ZQ, et al. Characteristics of deformation enhanced transformation in low carbon steel. Acta Metallurgica Sinica 2004; 40(2): 135-140.

[20] Sun ZQ, Yang WY, Hu AM and Yang P. Deformation enhanced ferrite transformation in plain low carbon steel, Acta Metallurgica Sinica 2001; 14(2): 115-121.

[21] Sun ZQ, Yang WY, Ji QQ, et al. Deformation enhanced transformation and dynamic recrystallization of ferrite in a low carbon steel during multipass deformation, Mater. Sci. Eng. 2002; A334: 201-206.

DOI: https://doi.org/10.1016/s0921-5093(01)01806-8

[22] Sun ZQ, Yang WY, Yang P, et al. Microstructure evolution during deformation of undercooled austenite in low carbon steel. In: Workshop on New Generation Steel, The Chinese Society for Metals, Beijing, 2001: 35.

[23] Qi JJ, Yang WY, Sun ZQ. Ultrafine ferrite formation during deformation of undercooled austenite in a low carbon steel. Acta Mater. Sinica, 2002; 38(9): 897-902.

[24] Zhou RF, Yang WY, Sun ZQ. Transformation kinetics of undercooled austenite during deformation of low carbon steel with different manganese and carbon contents, Acta Mater. Sinica 2004; 40(10): 1055-1063.

[25] Qi JJ, Yang WY, Sun ZQ et al. Kinetics of structure evolution during deformation enhanced transformation of a low carbon steel SS400. Acta Mater. Sinica 2005; 41(6): 605-610.

[26] Yang P, Fu YY, Cui FE. Characteristics of strain enhanced transformation and its influencing factors in Q235 plain carbon steel. Acta Metall. Sinica 2001; 37: 592-600.

[27] Hurley PJ and Hodgson PD. Formation of ultra-fine ferrite in hot rolled strip: potential mechanisms for grain refinement. Mater. Sci. Eng. 2001; A302: 206-214.

DOI: https://doi.org/10.1016/s0921-5093(00)01823-2

[28] Hurley PJ and Hodgson PD, Effect of process variables on formation of dynamic strain induced ultrafine ferrite during hot torsion testing. Mater. Sci. Tech. 2001; 17: 1360-67. (29)Hong SC, Lim SH, Lee KJ, et al. Effect of undercooling of austenite on strain induced ferrite transformation behavior. ISIJ International 2003; 43(3): 394-399.

DOI: https://doi.org/10.2355/isijinternational.43.394

[30] Choi JK, Seo DH, Lee JS, et al. Effect of processing parameters of strain induced dynamic transformation on the microstructures and mechanical properties of ultrafine grained low carbon steels. In: Proceedings of First International Conference on Advanced Structural Steels (ICASS 2002), Japan, 2002: 11.

[31] Enomoto M, Nojirl N and Sato Y, Effects of Vanadium and Niobium on the nucleation kinetics of proeutectoid ferrite at austenite grain boundaries in Fe-C and Fe-C-Mn alloys, Mater. Trans., 1994; 35(12): 859-867.

DOI: https://doi.org/10.2320/matertrans1989.35.859

[32] Lee KJ and Lee KJ, Modelling of γ/α transformation in niobium-containing microalloyed steels. Scripta Mater. 1999; 40(7): 831-836.

DOI: https://doi.org/10.1016/s1359-6462(99)00025-1

Fetching data from Crossref.
This may take some time to load.