Single-Line Diffraction Profile Analysis Method Used for Evaluation of Microstructural Parameters in the Plain Ferritic Steel upon Tensile Straining

Vadim Davydov; Petr Lukáš; Pavel Strunz; Radomír Kužel

doi:10.4028/www.scientific.net/MSF.571-572.181

Paper Titles

Monte Carlo Simulation to Macro Stress Evaluation and Micro Strain Analysis by Neutron and Synchrotron Radiation Diffraction
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Investigation of Retained Strains and Microstructures for a Hot Deformed Stainless Steel
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Neutron Diffraction Study of Duplex Stainless Steel during Loading at 200°C
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Single-Line Diffraction Profile Analysis Method Used for Evaluation of Microstructural Parameters in the Plain Ferritic Steel upon Tensile Straining
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Improvements in Energy Dispersive Diffraction in Respect of Residual Stress Analysis
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In Situ Investigation of the Deformation Behaviour of the Wrought Mg Base Alloy AZ31 Using Energy Dispersive Synchrotron Diffraction
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First Results of the DITO-Experiment at the HARWI II Beamline at GKSS/DESY
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Diffraction Contrast Tomography - A Synchrotron Radiation Technique for Mapping Polycrystalline Microstructures in 3D
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HomeMaterials Science ForumMaterials Science Forum Vols. 571-572Single-Line Diffraction Profile Analysis Method...

Single-Line Diffraction Profile Analysis Method Used for Evaluation of Microstructural Parameters in the Plain Ferritic Steel upon Tensile Straining

Abstract:

The modification of the Transformed Model Fitting /TMF/ [1] method developed for evaluation of the single-line profiles from high-resolution neutron powder diffractometers is proposed [2]. More sophisticated real-space model [3] is used for the distortion and crystallite size broadening of the diffraction lines. The new PC program based on this model has been tested on neutron diffraction profiles collected in situ upon tensile deformation tests of the plain ferritic steel. The deformation test was performed in the incremental mode in which each individual deformation step was followed by unloading. The neutron diffraction spectra were collected both upon loading and unloading and behavior of the diffraction profiles in elastic as well as in plastic region of the deformation curve was examined in detail. Comparison of microstress values in loaded/unloaded state and in elastic and plastic region offers interesting possibility to separate the contribution of the type II and type III microstresses.