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| Content Provider | Springer Nature Link |
|---|---|
| Author | Challa, V. S. A. Yashwanth, I. V. S. Mendoza, Kayna Lee Stafford, Stephen |
| Copyright Year | 2016 |
| Abstract | A land-based natural gas pipeline, API 5L Grade B pipe with an electric resistance weld (ERW), failed during hydrotesting inspection along the ERW seam, which led to further investigation. Linear indications, indicative of surface cracks, were observed on the outer diameter of the pipe below the fracture surface, made visible by fluorescent light. Using transmission electron microscopy, it was evidenced that a crack may have initiated within the martensite/austenite islands and propagated through the ferrite bands seen beneath the fracture surface in the heat-affected zone. It was also evidenced by scanning electron microscopy (SEM) that the primary fracture mode consisted of high volume fractions of transgranular cleavage and low volume fractions of transgranular microvoid coalescence. Also evidenced in SEM, were regions of non-fracture evidence indicative of inadequate fusion within the ERW seam. |
| Starting Page | 858 |
| Ending Page | 863 |
| Page Count | 6 |
| File Format | |
| ISSN | 15477029 |
| Journal | Journal of Failure Analysis and Prevention |
| Volume Number | 16 |
| Issue Number | 5 |
| e-ISSN | 18641245 |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2016-09-06 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Electric resistance weld Heat-affected zone Transmission electron microscopy Scanning electron microscopy Martensite/austenite islands Transgranular cleavage Transgranular microvoid coalescence Tribology, Corrosion and Coatings Characterization and Evaluation of Materials Mechanics Structural Mechanics Quality Control, Reliability, Safety and Risk |
| Content Type | Text |
| Resource Type | Article |
| Subject | Mechanics of Materials Materials Science Safety, Risk, Reliability and Quality Mechanical Engineering |
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