Investigation of penetrator defect formation during high frequency induction welding in pipeline steels
The aim of this study is to investigate the formation of oxide defects known as penetrators during high frequency induction welding process of high strength low alloy pipeline steels and to correlate their formation with the steel chemical composition. Penetrators formed during the welding process c...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2021-01-01
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| Series: | MATEC Web of Conferences |
| Online Access: | https://www.matec-conferences.org/articles/matecconf/pdf/2021/18/matecconf_iceaf2021_04002.pdf |
| _version_ | 1818845250415755264 |
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| author | Sofras Christos Bouzouni Marianthi Voudouris Nikolaos Papaefthymiou Spyros |
| author_facet | Sofras Christos Bouzouni Marianthi Voudouris Nikolaos Papaefthymiou Spyros |
| author_sort | Sofras Christos |
| collection | DOAJ |
| description | The aim of this study is to investigate the formation of oxide defects known as penetrators during high frequency induction welding process of high strength low alloy pipeline steels and to correlate their formation with the steel chemical composition. Penetrators formed during the welding process can be detrimental for the impact properties of the weld seam. For this purpose, three different samples, with different chemical compositions, were intentionally produced with penetrator-type oxides and investigated. In order to characterize the oxide defect and correlate their formation with the chemical composition of the steel, optical microscopy and scanning electron microscopy paired with energy dispersive spectroscopy were employed. In addition, thermodynamic calculations were performed in order to examine whether the chemical composition of pipeline steels is prone to oxide formation. The results showed that oxides with pancake type morphology were found alongside the fusion zone of the samples. They mainly consisted of manganese and silicon. First findings on the the Mn/Si ratio showed that the lower ratio is less susceptible to oxide formation. |
| first_indexed | 2024-12-19T05:26:40Z |
| format | Article |
| id | doaj.art-81a0b5f05d424331825c829284333b24 |
| institution | Directory Open Access Journal |
| issn | 2261-236X |
| language | English |
| last_indexed | 2024-12-19T05:26:40Z |
| publishDate | 2021-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | MATEC Web of Conferences |
| spelling | doaj.art-81a0b5f05d424331825c829284333b242022-12-21T20:34:21ZengEDP SciencesMATEC Web of Conferences2261-236X2021-01-013490400210.1051/matecconf/202134904002matecconf_iceaf2021_04002Investigation of penetrator defect formation during high frequency induction welding in pipeline steelsSofras ChristosBouzouni Marianthi0Voudouris Nikolaos1Papaefthymiou Spyros2ELKEME S.A.CPW S.A.Laboratory of Physical Metallurgy, Division of Metallurgy and Materials, School of Mining and Metallurgical EngineeringThe aim of this study is to investigate the formation of oxide defects known as penetrators during high frequency induction welding process of high strength low alloy pipeline steels and to correlate their formation with the steel chemical composition. Penetrators formed during the welding process can be detrimental for the impact properties of the weld seam. For this purpose, three different samples, with different chemical compositions, were intentionally produced with penetrator-type oxides and investigated. In order to characterize the oxide defect and correlate their formation with the chemical composition of the steel, optical microscopy and scanning electron microscopy paired with energy dispersive spectroscopy were employed. In addition, thermodynamic calculations were performed in order to examine whether the chemical composition of pipeline steels is prone to oxide formation. The results showed that oxides with pancake type morphology were found alongside the fusion zone of the samples. They mainly consisted of manganese and silicon. First findings on the the Mn/Si ratio showed that the lower ratio is less susceptible to oxide formation.https://www.matec-conferences.org/articles/matecconf/pdf/2021/18/matecconf_iceaf2021_04002.pdf |
| spellingShingle | Sofras Christos Bouzouni Marianthi Voudouris Nikolaos Papaefthymiou Spyros Investigation of penetrator defect formation during high frequency induction welding in pipeline steels MATEC Web of Conferences |
| title | Investigation of penetrator defect formation during high frequency induction welding in pipeline steels |
| title_full | Investigation of penetrator defect formation during high frequency induction welding in pipeline steels |
| title_fullStr | Investigation of penetrator defect formation during high frequency induction welding in pipeline steels |
| title_full_unstemmed | Investigation of penetrator defect formation during high frequency induction welding in pipeline steels |
| title_short | Investigation of penetrator defect formation during high frequency induction welding in pipeline steels |
| title_sort | investigation of penetrator defect formation during high frequency induction welding in pipeline steels |
| url | https://www.matec-conferences.org/articles/matecconf/pdf/2021/18/matecconf_iceaf2021_04002.pdf |
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