StressTextureCalculator: a software tool to extract texture, strain and microstructure information from area-detector measurements

Modern materials science diffractometers are generally equipped with area detectors that allow a high time efficiency to be achieved by simultaneously collecting the scattering pattern over large angular regions. These area-detector-based instruments, however, produce a huge amount of data, especially if they are located at large-scale neutron or synchrotron sources. The software StressTextureCalculator (STeCa) was designed to facilitate fast, easy and automated access to such area-detector data. Its outstanding features are direct calculation of diffraction patterns from different types of area-detector measurements, automatic data treatment and peak fitting using several implemented fit options. The resulting information on intensity, peak shift and broadening can then be exported into several data formats. These in turn can be used as input for a wide range of texture, stress and microstructure analysis software packages without additional prior treatment. © 2011, Wiley-Blackwell

NEUTRON-DIFFRACTION STUDY OF THE CRYSTALLINE TEXTURE IN A MARTENSITIC STEEL FOR FUSION-REACTOR TECHNOLOGY

This contribution presents the results of a neutron-diffraction study on the evolution of texture in modified martensitic steel DIN 1.4914 (MANET) submitted to various quenching and tempering treatments in conditions technologically relevant to operation in future fusion reactors. The corresponding orientation-distribution functions are presented and discussed, with reference to other microstructural features of the investigated material

Role of deformation temperature on the evolution and heterogeneity of texture during equal channel angular pressing of magnesium

Investigations on texture evolution and through-thickness texture heterogeneity during equal channel angular pressing (ECAP) of pure magnesium at 200 degrees C, 150 degrees C and room temperature (RT) was carried out by neutron, high energy synchrotron X-ray and electron back-scatter diffraction. Irrespective of the ECAP temperature, a distinctive basal (B) and pyramidal (C-2) <c + a> II type of fibers forms. The texture differs in the bottom 1 mm portion, where the B-fiber is shifted similar to 55 degrees due to negative shear attributed to friction. (C) 2015 Elsevier Inc. All rights reserved

NEUTRON-DIFFRACTION STUDY OF THE CRYSTALLINE TEXTURE IN A MARTENSITIC STEEL FOR FUSION-REACTOR TECHNOLOGY

This contribution presents the results of a neutron-diffraction study on the evolution of texture in modified martensitic steel DIN 1.4914 (MANET) submitted to various quenching and tempering treatments in conditions technologically relevant to operation in future fusion reactors. The corresponding orientation-distribution functions are presented and discussed, with reference to other microstructural features of the investigated material

Simulation of Deformation Texture Evolution During Multi Axial Forging of Interstitial Free Steel

Bulk texture measurement of multi-axial forged body center cubic interstitial free steel performed in this study using x-ray and neutron diffraction indicated the presence of a strong {101}aOE (c) 111 > single texture component. Viscoplastic self-consistent simulations could successfully predict the formation of this texture component by incorporating the complicated strain path followed during this process and assuming the activity of {101}aOE (c) 111 > slip system. In addition, a first-order estimate of mechanical properties in terms of highly anisotropic yield locus and Lankford parameter was also obtained from the simulations

Eleventh European Powder Diffraction Conference, Warsaw, September 19-22, 2008, available at:https://www.degruyter.com/view/title/320388.

We have investigated an Fe-30Mn-4Si shape memory alloy to clarify the effect, on the bulk texture, of the shear layers resulting from two different thermo-mechanical treatments. XR analysis has shown the existence of texture heterogeneity through the rolled sheet's thickness, due to the effect of friction between sheet and rolls. Neutron diffraction revealed that textured layers on the sheet's surface affect the whole volume. The texture found on the surface of the sheet rolled at 600 degrees C is the most favourable for the γ ->epsilon martensitic transformation which is the origin of the shape memory effect. Comparing these results with those obtained on sheets rolled at room temperature, we found that shear deformation gradients produce changes in the bulk material texture. Tensile tests initially induce the martensitic transformation in those grains favourably oriented. As a result, these favourable orientations disappear in the remnant austenite. © 2009, Oldenbourg Verla

MICROSTRUCTURE, TEXTURE AND MECHANICAL PROPERTIES OF THE MAGNESIUM ALLOY AZ31 PROCESSED BY ECAP

To investigate the influence of equal channel angular pressing on the microstructure and texture of the magnesium alloy AZ31, electron backscattering diffraction and well as neutron diffraction experiments were carried out. Through these experiments it was possible to trace the microstructure and texture evolution with strain accumulated with the increasing number of equal channel angular pressing passes. It was further demonstrated by subsequent compression tests that the microstructural changes produced by equal channel angular pressing have a beneficial effect on both the compressive strength and ductility of AD31.X113634sciescopu