Residual Stress Characterization of A7N01-T5 Welds for High Speed Train by X-Ray Diffraction and Verification

Abstract:

Welding residual stresses have an effect on many aspects of the integrity of structures but are normally one of the largest unknown stresses. Residual stresses are difficult to measure and to estimate theoretically but are often significant when compared with the service stresses. In this paper, measurement of residual stresses by X-ray diffraction technique using two different fitting methods (Gaussian and PearsonⅦ) was compared with analysis of a sample geometry by theoretical finite-element methods. The square map RS characterization of A7N01-T5 welds was shown. The results indicate RS measured by XRD and simulated by finite-element method show good qualitative agreement.

• Periodical: Advanced Materials Research (Volumes 291-294)
• Pages: 896-900
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.291-294.896
• Online since: July 2011
• Authors: Hua Ji, Guo Qing Gou, Hui Chen, Da Li, Chuan Ping Ma, Ai Qin Tian, Zhi Cheng Guo
• Keywords: A7N01-T5 Al-Alloy, Finite Element Model (FEM), High Speed Train (HST), X-Ray Diffraction (XRD)

References

[1] Jairo Aparecido Martins, Lisandro Pavio Cardoso, Jos´e Alfredo Fraymann, S´ergio Tonini Button. Analyses of residual stresses on stamped valves by X-ray diffraction and finite elements method [J]. Journal of Processing Technology. 179 (2006) 30–35.

DOI: 10.1016/j.jmatprotec.2006.03.072

[2] John W.H. Price, Anna Ziara-Paradowsk et al.Comparison of experimental and theoretical residual stresses in welds:The issue of gauge volume[J].International Journal of Mechanical Sciences. 50 (2008) 513–521.

DOI: 10.1016/j.ijmecsci.2007.08.008

[3] Shamachary Sathish,Thomas J. Moran et al. Residual stress measurement with focused acoustic waves and direct comparison with X-ray diffraction stress measurements[J]. Materials Science and Engineering A 399 (2005) 84–91.

DOI: 10.1016/j.msea.2005.02.020

[4] Farong YUAN, Shangli WU. Measurement and calculation of Residual stress[M].Changsha: Hunan University Press,1987.(in Chinese)

[5] [S. Pratihar a, V. Stelmukh measurement of the residual stress field in MIG-welded Al-2024 and Al-7150 aluminium alloy compact tension specimens]

DOI: 10.1016/j.msea.2006.04.061

[6] Buxiang ZHEN, Yonglun SONG et al. Residual Stresses Measurement of Butt-welded Aluminium Alloy Plates by X-ray[J].Journal of Mechanical Engineering 3(45)(2009)275~281.(in Chinese)

DOI: 10.3901/jme.2009.03.275

[7] A.Steuwer, M.J. Peel et al. Dissimilar friction stir welds in AA5083–AA6082:The effect of process parameters on residual stress[J]. Materials Science and Engineering A 441 (2006) 187–196

DOI: 10.1016/j.msea.2006.08.012

[8] P.Staron M.Ko cak et al.Residual stress in friction stir-welded Al sheets[J]. Physica B350(2004) e491-e493.

DOI: 10.1016/j.physb.2004.03.128

[9] M. De Giorgi , V. Dattoma and R. Nobile .Some considerations about fatigue failure in milled butt-welded joints affected by residual stress[J]. Journal of Mechanical Science and Technology 24 (2) (2010) 453~460

DOI: 10.1007/s12206-009-1280-9