Study of Stress Partitioning in a 0.68 wt%C Pearlitic Steel Using High Energy X-Ray Synchrotron Radiation

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Study of Stress Partitioning in a 0.68 wt%C Pearlitic Steel Using High Energy X-Ray Synchrotron Radiation

C. BRAHAM, A. BACZMAŃSKI, G. GONZALEZ, H. SIDHOM, E. GADALIŃSKA, S. WROŃSKI, T. BUSLAPS, R. WAWSZCZAK

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Abstract. In the present work, the evolution of the phase stresses in a 0.68 wt%C pearlitic steel is analyzed by synchrotron diffraction during uniaxial tensile loading, at room temperature. The diffraction measurements were done at ESRF beamline ID15B (Grenoble, France). The microstructure of the studied material, obtained after an austenitizing at 1050°C for 7 minutes followed by cooling under blowing air, corresponds to fully pearlitic steel with a cementite volume fraction of about 12.5%. As expected, the results show a clear effect of elastic and plastic anisotropy in the both phases. For the interpretation of the diffraction data, different models are compared. In elastic range and for small plastic deformation, the self-consistent model presents the best agreement with the experimental data. For large plastic deformation, this model does not predict correctly the stress partitioning between the phases as well as the macro behavior of the studied steel. Therefore a mixture model “(1-x)*self-consistent model + x*Taylor” was used to take into account the interaction between the phases.

Keywords
Pearlitic Steel, Residual Stress, X-Ray Diffraction, Synchrotron, Elasto-Plasticity, Self-Consistent Model

Published online 12/22/2016, 6 pages
Copyright © 2016 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: C. BRAHAM, A. BACZMAŃSKI, G. GONZALEZ, H. SIDHOM, E. GADALIŃSKA, S. WROŃSKI, T. BUSLAPS, R. WAWSZCZAK, ‘Study of Stress Partitioning in a 0.68 wt%C Pearlitic Steel Using High Energy X-Ray Synchrotron Radiation’, Materials Research Proceedings, Vol. 2, pp 521-526, 2017

DOI: http://dx.doi.org/10.21741/9781945291173-88

The article was published as article 88 of the book Residual Stresses 2016

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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