Failure Analysis of a Bellows Expansion Joint of Inconel625 Alloy

Hua Dong Liu; Wei Qiang Wang; Yan Liu

doi:10.4028/www.scientific.net/AMR.500.580

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 500Failure Analysis of a Bellows Expansion Joint of...

Failure Analysis of a Bellows Expansion Joint of Inconel625 Alloy

Abstract:

A bellows expansion joint of a refinery cracked within a year of use. Analysis was carried out based on the investigation of the working conditions and environments. Through the macroscopic analysis, chemical components analysis, microstructure analysis and SEM analysis, we drew some conclusions. The high-temperature sulfur corrosion led to the failure directly, while the direct reason was the extra load applied on the joint which was caused by the unreasonable support structure. Preventive measures were proposed at last.

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Periodical:

Advanced Materials Research (Volume 500)

Pages:

580-585

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.500.580

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Online since:

April 2012

Authors:

Hua Dong Liu, Wei Qiang Wang, Yan Liu

Keywords:

Expansion Joint, Failure Analysis, High Temperature Sulfur Corrosion, Inconel 625 Alloy

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References

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