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New Type of Diffraction Elastic Constants for Stress Determination

Journal Materials Science Forum (Volumes 524 - 525)
Volume Residual Stresses VII, ECRS7
Edited by W. Reimers and S. Quander
Pages 235-240
DOI 10.4028/www.scientific.net/MSF.524-525.235
Citation Andrzej Baczmański et al., 2006, Materials Science Forum, 524-525, 235
Online since September, 2006
Authors Andrzej Baczmański, Albert Tidu, Paul Lipinski, Michel Humbert, Krzysztof Wierzbanowski
Keywords Diffraction Elastic Constants, Residual Stress, Self-Consistent Model, X-Ray Diffraction (XRD)
Abstract

A new method for calculation of the diffraction elastic constants, based on the selfconsistent model, is proposed and tested. This method is especially useful in the interpretation of the results of X-ray measurements since the ellipsoidal inclusion near the sample surface is considered. In X-ray diffraction the information volume of the sample is defined by absorption, causing unequal contribution of different crystallites to the intensity of the measured peak. Consequently, the surface grains participate more effectively in diffraction than the grains which are deeper in the sample.

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