publication . Article . 2015

Premature failure of dissimilar metal weld joint at intermediate temperature superheater tube

Al Hajri, Mohammed; Malik, Anees U.; Meroufel, Abdelkader; Al-Muaili, Fahd;
Open Access English
  • Published: 01 Apr 2015 Journal: Case Studies in Engineering Failure Analysis, volume 3, pages 96-103 (issn: 2213-2902, Copyright policy)
  • Publisher: Elsevier BV
Abstract
Dissimilar metal weld (DMW) joint between alloyed steel (AS) and stainless steel (SS) failed at one of intermediate temperature superheater (ITSH) tube in steam/power generation plant boiler. The premature failure was detected after a relatively short time of operation (8 years) where the crack propagated circumferentially from AS side through the ITSH tube. Apart from physical examination, microstructural studies based on optical microscopy, SEM and EDX analysis were performed. The results of the investigation point out the limitation of Carbides precipitation at the alloyed steel/welding interface. This is synonym of creep stage I involvement in the failure of...
Subjects
free text keywords: TA1-2040, Dissimilar metal weld, Superheater, PWHT, Creep, Engineering (General). Civil engineering (General), Nickel filler
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publication . Article . 2015

Premature failure of dissimilar metal weld joint at intermediate temperature superheater tube

Al Hajri, Mohammed; Malik, Anees U.; Meroufel, Abdelkader; Al-Muaili, Fahd;