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OIM analysis of microstructure and texture of a TRIP assisted steel after static and dynamic deformation

(2010) MATERIALS SCIENCE FORUM. 638-642. p.3447-3452
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Abstract
TRIP-assisted steel with a composition of 0.2%C, 1.6%Mn, 1.5%Al was studied in the undeformed state, after the application of 10 and 30 % static tensile strain parallel to rolling the direction of the sheet and after dynamic (Hopkinson) fracture test. Detailed examination of the microstructure and microtexture by means of electron backscattered diffraction (EBSD) was carried out in order to quantify the microstructural constituents and to study the strain distribution. The microtexture evolution and the distribution of the specific texture components between the BCC and FCC phases were studied as a function of the external strain and the strain mode-static or dynamic. The strain localization and strain distribution between the structural constituents were quantified based on local misorientation maps. The full constraint Taylor model was used to predict the texture changes in the material and the results were compared to the experimental findings. Comparing the local misorientation data it was found that at low strains the ferrite accommodates approximately 10 times more deformation than the retained austenite. The strain localizes initially on the BCC-FCC phase boundaries and is then spread in the BCC constituents (ferrite and bainite) creating a deformation skeleton in the BCC phase. It was found that the observed texture changes in the measured retained austenite texture after deformation do not correspond exactly to the model prediction. The austenite texture components which were predicted by the Taylor model were not found in the measured austenite texture after deformation which means that they are first transformed to martensite, which is considered as an indication for the selective transformation of austenite under strain.
Keywords
texture, microstructure, TRIP steels, EBSD, fracture, strain

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Chicago
Petrov, Roumen, Jérémie Bouquerel, Leo Kestens, Patricia Verleysen, and Yvan Houbaert. 2010. “OIM Analysis of Microstructure and Texture of a TRIP Assisted Steel After Static and Dynamic Deformation.” In Materials Science Forum, ed. T Chandra, N Wanderka, W Reimers, and M Ionescu, 638-642:3447–3452. Stafa-Zürich, Switzerland: Trans Tech Publications ltd.
APA
Petrov, Roumen, Bouquerel, J., Kestens, L., Verleysen, P., & Houbaert, Y. (2010). OIM analysis of microstructure and texture of a TRIP assisted steel after static and dynamic deformation. In T. Chandra, N. Wanderka, W. Reimers, & M. Ionescu (Eds.), MATERIALS SCIENCE FORUM (Vol. 638–642, pp. 3447–3452). Presented at the 6th International conference on Processing and Manufacturing of Advanced Materials (THERMEC 2009), Stafa-Zürich, Switzerland: Trans Tech Publications ltd.
Vancouver
1.
Petrov R, Bouquerel J, Kestens L, Verleysen P, Houbaert Y. OIM analysis of microstructure and texture of a TRIP assisted steel after static and dynamic deformation. In: Chandra T, Wanderka N, Reimers W, Ionescu M, editors. MATERIALS SCIENCE FORUM. Stafa-Zürich, Switzerland: Trans Tech Publications ltd; 2010. p. 3447–52.
MLA
Petrov, Roumen, Jérémie Bouquerel, Leo Kestens, et al. “OIM Analysis of Microstructure and Texture of a TRIP Assisted Steel After Static and Dynamic Deformation.” Materials Science Forum. Ed. T Chandra et al. Vol. 638–642. Stafa-Zürich, Switzerland: Trans Tech Publications ltd, 2010. 3447–3452. Print.
@inproceedings{1029837,
  abstract     = {TRIP-assisted steel with a composition of 0.2\%C, 1.6\%Mn, 1.5\%Al was studied in the undeformed state, after the application of 10 and 30 \% static tensile strain parallel to rolling the direction of the sheet and after dynamic (Hopkinson) fracture test. Detailed examination of the microstructure and microtexture by means of electron backscattered diffraction (EBSD) was carried out in order to quantify the microstructural constituents and to study the strain distribution. The microtexture evolution and the distribution of the specific texture components between the BCC and FCC phases were studied as a function of the external strain and the strain mode-static or dynamic. The strain localization and strain distribution between the structural constituents were quantified based on local misorientation maps. The full constraint Taylor model was used to predict the texture changes in the material and the results were compared to the experimental findings. Comparing the local misorientation data it was found that at low strains the ferrite accommodates approximately 10 times more deformation than the retained austenite. The strain localizes initially on the BCC-FCC phase boundaries and is then spread in the BCC constituents (ferrite and bainite) creating a deformation skeleton in the BCC phase.
It was found that the observed texture changes in the measured retained austenite texture after deformation do not correspond exactly to the model prediction. The austenite texture components which were predicted by the Taylor model were not found in the measured austenite texture after deformation which means that they are first transformed to martensite, which is considered as an indication for the selective transformation of austenite under strain.},
  author       = {Petrov, Roumen and Bouquerel, J{\'e}r{\'e}mie and Kestens, Leo and Verleysen, Patricia and Houbaert, Yvan},
  booktitle    = {MATERIALS SCIENCE FORUM},
  editor       = {Chandra, T and Wanderka, N and Reimers, W and Ionescu, M},
  issn         = {0255-5476},
  keyword      = {texture,microstructure,TRIP steels,EBSD,fracture,strain},
  language     = {eng},
  location     = {Berlin, Germany},
  pages        = {3447--3452},
  publisher    = {Trans Tech Publications ltd},
  title        = {OIM analysis of microstructure and texture of a TRIP assisted steel after static and dynamic deformation},
  url          = {http://dx.doi.org/10.4028/www.scientific.net/MSF.638-642.3447},
  volume       = {638-642},
  year         = {2010},
}

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