Effect of Detector Width and Peak Location Technique on Residual Stress Determination in Case of Work-Hardened Materials

Abstract:

Article Preview

To enhance the fatigue resistance of mechanical components, different surface treatment processes are often applied to put the near surface layer into compression. Surface treatment processes are typically associated with deformation and work-hardening of the material. When applying x-ray diffraction techniques to the characterization of such surfaces, the work-hardening will cause the x-ray diffraction peak width to increase. When peak widths reach high values, the peak tail may extend beyond the active area or window of the multichannel x-ray detector, in which case the peak is truncated. Subsequent analytical treatment of broad diffraction peaks is troublesome and advanced numerical methods are required to accurately determine the peak position. The following work indicates that when a wider detector is used it is possible to collect the full, non-truncated peak, determine the peak position with a high level of confidence and subsequently, to calculate the residual stress with much improved repeatability and reproducibility.

Info:

Periodical:

Materials Science Forum (Volumes 524-525)

Edited by:

W. Reimers and S. Quander

Pages:

755-760

DOI:

10.4028/www.scientific.net/MSF.524-525.755

Citation:

M. Belassel et al., "Effect of Detector Width and Peak Location Technique on Residual Stress Determination in Case of Work-Hardened Materials", Materials Science Forum, Vols. 524-525, pp. 755-760, 2006

Online since:

September 2006

Export:

Price:

$35.00

[1] I. C. Noyan and J. B. Cohen, Residual Stress - Measurement by Diffraction and Interpretation, Springer-Verlag, New York, (1987).

[2] F. Convert, Mesure des Déplacements des Pics de Diffraction Très larges Dans L'Analyse des Contraintes Par Diffractométrie X, Revue Française de Mécanique, 1993, pp.81-92.

[3] B. Guarc, "PFE LM3 ENSAM Paris, (1995).

[4] V. Hauk, Structural and Residual Stress Analysis by Nondestructive Methods, Ed. Elsevier, (1997).

[5] AFNOR XP A 09-285, Méthodes D'essais Pour L'analyse Des Contraintes Résiduelles Par Diffraction des Rayons X, Mai (1999).

[6] G. Lespinasse et al., Optimization of Residual Stress Analysis of Gears by X-Ray Diffraction, Proceedings of ECRS5, Vol. 1, 1996, pp.317-326.

[7] J. Lu et al. Handbook of Measurement of Residual Stresses, Published by the Fairmont Press, Inc., (1996).

In order to see related information, you need to Login.