Analysis of Welding Residual Stress on Cracked Vessels with X-Ray Diffraction Method

Jun Ming Zhou; Yi Liang Zhang

doi:10.4028/www.scientific.net/AMR.937.318

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 937Analysis of Welding Residual Stress on Cracked...

Analysis of Welding Residual Stress on Cracked Vessels with X-Ray Diffraction Method

Abstract:

A large number of cracks are found in the 1500m³ Liquefied Light hydrocarbons vessel during the inspection after two years of running.In totally,six vessels being fully heated treated is made of 15MnNbR. Researchers used X-ray stress analyzer measured the welding residual stress of vessels that have been cracked and uncracked. The results show that, residual stress of uncracked spherical vessels are in good condition, while those value of cracked is high, the value of the highest is 1.05σs. It indicates that the possible reason for the separation is the residual stress in the high state. Through welding and heat treated for the second time, the welding residual stress decreased obviously. It indicates the impact of this measure is good.

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Periodical:

Advanced Materials Research (Volume 937)

Pages:

318-323

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.937.318

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Online since:

May 2014

Authors:

Jun Ming Zhou, Yi Liang Zhang

Keywords:

Heat Affected Zone, Welding Residual Stress, X-Ray Diffraction (XRD)

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References

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