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

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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.

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Periodical:

Advanced Materials Research (Volumes 291-294)

Pages:

896-900

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.291-294.896

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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)

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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