Browsing by Author "Joncour, LL"

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    Elastoplastic deformation and damage process in duplex steel studied using synchrotron and neutron diffraction
    (Scientific.Net, 2017-08-22) Zhao, YC; Joncour, LL; Baczmański, A; François, M; Wroński, S; Panicaud, B; Gadalińska, E; Braham, C; Buslaps, T; Paradowska, AM
    In the present work, the mechanical behavior of phases in duplex steel during tensile test was studied. Special interest was taken in the analysis of damage process just before failure. In this aim two diffraction methods: in-situ time of flight neutron diffraction and X-ray synchrotron diffraction were applied. Using diffraction data, the slip mechanism on crystallographic planes during plastic deformation was investigated. In the case of aged UR45N steel, it was found that significant softening caused by damage process was initiated in the ferritic phase. The lattice strains measured in situ by two above mentioned diffraction methods were compared with prediction of the self-consistent model. © 2021 by Trans Tech Publications Ltd.
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    Study of stresses in texture components using neutron diffraction
    (Trans Tech Publications, 2013-09-01) Baczmański, A; Gadalińska, E; Wroński, S; Joncour, LL; Panicaud, B; François, M; Braham, C; Klosek, V; Paradowska, AM
    In this work a new method for analysis of neutron diffraction results obtained during “in situ” tensile load is proposed and tested. The methodology is based on the measurements of lattice strains during “in situ” tensile test for several hkl reflections and for different orientations of the sample with respect to the scattering vector. As the result the full stress tensor for preferred texture orientations in function of applied stress can be determined with help of crystallite group method. The experimental data are presented and compared with self-consistent model calculations performed for groups of grains corresponding to the measured hkl reflections. © 2014, Trans Tech Publications.