Fatigue crack propagation in welded joints X70
Structural failure assessment approaches take into account local parameters, specimen geometry, loading and material. In the case of welded joints, in addition to these parameters, consideration must be given to the effect of the heterogeneity of properties due to welding. The objective of our work...
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| Language: | English |
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Gruppo Italiano Frattura
2018-09-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/2172 |
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| author | Adel Deliou Benattou Bouchouicha |
| author_facet | Adel Deliou Benattou Bouchouicha |
| author_sort | Adel Deliou |
| collection | DOAJ |
| description | Structural failure assessment approaches take into account local parameters, specimen geometry, loading and material. In the case of welded joints, in addition to these parameters, consideration must be given to the
effect of the heterogeneity of properties due to welding. The objective of our work is to study the fatigue crack propagation of welded joint in API X70 pipeline steel. This experimental study focused on welded joints in the
different parts, base metal, weld metal and heat affected zone. The concepts of fracture mechanics are used to analyze the harmfulness of defects in welded joints and the main part of fatigue life falls on the crack
propagation. The results obtained show that the fatigue crack propagation rate of cracks in the heat affected zone is delayed compared to the other zones.
The effect of the microstructure and the quality of submerged arc welding of the studied X70 steel are significant. Tensile tests, hardness and measurement of energetically parameters complemented this work. |
| format | Article |
| id | doaj-art-49b9760852a740ee92c81123fd31d1f3 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2018-09-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-49b9760852a740ee92c81123fd31d1f32025-01-03T00:40:22ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932018-09-011246Fatigue crack propagation in welded joints X70Adel Deliou0Benattou Bouchouicha1Laboratory of Materials and Reactive Systems LMSR, University Djillali, Liabes, Sidi Bel-AbbesLaboratory of Materials and Reactive Systems LMSR, University Djillali, Liabes, Sidi Bel-Abbes, Algeria .Structural failure assessment approaches take into account local parameters, specimen geometry, loading and material. In the case of welded joints, in addition to these parameters, consideration must be given to the effect of the heterogeneity of properties due to welding. The objective of our work is to study the fatigue crack propagation of welded joint in API X70 pipeline steel. This experimental study focused on welded joints in the different parts, base metal, weld metal and heat affected zone. The concepts of fracture mechanics are used to analyze the harmfulness of defects in welded joints and the main part of fatigue life falls on the crack propagation. The results obtained show that the fatigue crack propagation rate of cracks in the heat affected zone is delayed compared to the other zones. The effect of the microstructure and the quality of submerged arc welding of the studied X70 steel are significant. Tensile tests, hardness and measurement of energetically parameters complemented this work.https://www.fracturae.com/index.php/fis/article/view/2172X70Mechanical behaviourFatigue crack propagationEnergy |
| spellingShingle | Adel Deliou Benattou Bouchouicha Fatigue crack propagation in welded joints X70 Fracture and Structural Integrity X70 Mechanical behaviour Fatigue crack propagation Energy |
| title | Fatigue crack propagation in welded joints X70 |
| title_full | Fatigue crack propagation in welded joints X70 |
| title_fullStr | Fatigue crack propagation in welded joints X70 |
| title_full_unstemmed | Fatigue crack propagation in welded joints X70 |
| title_short | Fatigue crack propagation in welded joints X70 |
| title_sort | fatigue crack propagation in welded joints x70 |
| topic | X70 Mechanical behaviour Fatigue crack propagation Energy |
| url | https://www.fracturae.com/index.php/fis/article/view/2172 |
| work_keys_str_mv | AT adeldeliou fatiguecrackpropagationinweldedjointsx70 AT benattoubouchouicha fatiguecrackpropagationinweldedjointsx70 |