Show simple item record

dc.contributor.authorKURJI, Rahim
dc.contributor.author
 hal.structure.identifier
CONIGLIO, Nicolas
211915 Mechanics surfaces and materials processing [MSMP]
dc.date.accessioned2015
dc.date.available2015
dc.date.issued2015
dc.date.submitted2015
dc.identifier.issn0268-3768
dc.identifier.urihttp://hdl.handle.net/10985/9418
dc.description.abstractIndustry and research have long desired the establishment of standards for weldability testing in regards to hydrogen assisted cold cracking formation. This would have the obvious advantage of allowing data to be reliably compared between different research labs. But making decisions regarding standards requires some careful thought and agreement on i) how test parameters affect test results, ii) what exactly needs to be measured, and iii) how test results should be interpreted and reported. Our depth of understanding on these points has matured significantly over time and, while there is not always universal agreement, it is at least possible to start highlighting factors important to standards. This paper examines these factors, including the welding parameters, restraint, hydrogen, and cracking index. When comparing different alloys having different thermal characteristics, the use of constant welding parameters (common practice) will result in variable weld penetration and weld pool shape, which can influence grain shape and microstructural features, which can result in inequitable weldability comparisons. Welding on test coupons having different dimensions can affect restraint, which will influence the residual stresses around the weldment. High restraint usually results in higher crack susceptibility. Also, hydrogen content present in a weldment depends on the thermal history, welding parameters, and surrounding atmosphere humidity; with high hydrogen contents associated to great cracking susceptibility. Finally, the selection of an appropriate cracking index is required for data analysis. Quantifications of crack length and minimum preheat temperature are common indexes used for comparison. Critical stress and hydrogen content are other indexes. But how well these indexes actually represent weldability are contentious issues. This paper will examine and quantify these issues in detail, thus providing the reader with an appreciation of all things that must be considered when preparing a standardized procedure for weldability testing.
dc.description.sponsorshipThe research work was funded by the Energy Pipeline CRC supported through the Australian Government’s Cooperative Research Centres Program. The cash and in-kind support from the APIA-RSC is gratefully acknowledged.
dc.language.isoen
dc.publisherSpringer Verlag
dc.rightsPost-print
dc.subjecthydrogen assisted cold cracking
dc.subjectweldability test
dc.titleTowards Establishment of Weldability Test Standards for Hydrogen Assisted Cold Cracking
dc.identifier.doi10.1007/s00170-014-6555-3
dc.typdocArticle dans une revue avec comité de lecture
dc.localisationCentre de Aix en Provence
dc.localisationCentre de Angers
dc.subject.halSciences de l'ingénieur: Matériaux
ensam.audienceInternationale
ensam.page1581-1597
ensam.journalInternational Journal of Advanced Manufacturing Technology
ensam.volume77
hal.description.error{"meta":{"peerReviewing":{"isEmpty":"Vous devez remplir ce champ"}}}
hal.identifierhal-01134401
hal.version1
hal.submission.permittedupdateMetadata
hal.statusaccept
dc.identifier.eissn1433-3015


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record