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Characteristics of Residual Stress in P92 Steel Welds

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Abstract:

Welding residual stress has important influence on the performance of engineering components. In this paper, the residual stress and FWHM were measured by X-ray diffraction method to investigate characteristics for P92 steel welds. The aim of the study is to estimate the residual stress and FWHM distribution characteristics. A compressive residual stress distributed as a function of depth has a different pattern in welds and base metal. A large tensile residual stress occurs welds and near the HAZ, but approaches gradually zero as away from the welding center. Residual stress and FWHM undergo rapid relaxation after PWHT. Also, FWHM is a scalar quantity without any directional difference and is proportional to hardness on the whole.

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Periodical:

Advanced Materials Research (Volumes 26-28)

Pages:

1175-1180

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.26-28.1175

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Online since:

October 2007

Authors:

Keun Bong Yoo, Hyun Sun Choi, Eui Hyun Kim, Jae Hoon Kim

Keywords:

Full Width Half Maximum (FWHM), P92 Steel Welds, Residual Stress, USC, X-Ray Diffraction (XRD)

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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