Research Progress on Sulfide Stress Corrosion Cracking of Dissimilar Weld Joints in Oil and Gas Fields
Dissimilar metal weld joints are widely used in oil and gas fields.However,the environ-mentally assisted cracking is easy to occur in and around the fusion region of weld joints,which may seri-ously affect the safety of oil and gas transportation and cause huge economic losses.Therefore,it is nec-essary to deeply study the sulfide stress corrosion cracking(SSCC)behavior of dissimilar metal weld joints in acidic oil and gas environments.In this paper,the research progress on SSCC of dissimilar metal weld joints in oil and gas fields were summarized.Firstly,the types and microstructure of the weld joints are introduced.Secondly,the mechanism of the SSCC of weld joints is discussed briefly.The effect of mi-crostructure of dissimilar metal welded joints,temperature,CO2 partial pressure,applied stress and post-welding heat treatment on the SSCC of dissimilar metal welded joints were reviewed.In the end,the re-search progress of the SSCC of dissimilar metal welded joint in oil and gas fields in recent decades is re-viewed,and the future research direction is prospected.
dissimilar metal weld jointmicrostructuresulfide stress corrosion cracking(SSCC)
NETL
NSTL
万方数据
