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...

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Autores principales:	Sofras Christos, Bouzouni Marianthi, Voudouris Nikolaos, Papaefthymiou Spyros
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/81a0b5f05d424331825c829284333b24
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spelling	oai:doaj.org-article:81a0b5f05d424331825c829284333b242021-12-02T17:13:46ZInvestigation of penetrator defect formation during high frequency induction welding in pipeline steels2261-236X10.1051/matecconf/202134904002https://doaj.org/article/81a0b5f05d424331825c829284333b242021-01-01T00:00:00Zhttps://www.matec-conferences.org/articles/matecconf/pdf/2021/18/matecconf_iceaf2021_04002.pdfhttps://doaj.org/toc/2261-236XThe 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.Sofras ChristosBouzouni MarianthiVoudouris NikolaosPapaefthymiou SpyrosEDP SciencesarticleEngineering (General). Civil engineering (General)TA1-2040ENFRMATEC Web of Conferences, Vol 349, p 04002 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Engineering (General). Civil engineering (General) TA1-2040 Sofras Christos Bouzouni Marianthi Voudouris Nikolaos Papaefthymiou Spyros Investigation of penetrator defect formation during high frequency induction welding in pipeline steels
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.
format	article
author	Sofras Christos Bouzouni Marianthi Voudouris Nikolaos Papaefthymiou Spyros
author_facet	Sofras Christos Bouzouni Marianthi Voudouris Nikolaos Papaefthymiou Spyros
author_sort	Sofras Christos
title	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_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_sort	investigation of penetrator defect formation during high frequency induction welding in pipeline steels
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/81a0b5f05d424331825c829284333b24
work_keys_str_mv	AT sofraschristos investigationofpenetratordefectformationduringhighfrequencyinductionweldinginpipelinesteels AT bouzounimarianthi investigationofpenetratordefectformationduringhighfrequencyinductionweldinginpipelinesteels AT voudourisnikolaos investigationofpenetratordefectformationduringhighfrequencyinductionweldinginpipelinesteels AT papaefthymiouspyros investigationofpenetratordefectformationduringhighfrequencyinductionweldinginpipelinesteels
_version_	1718381328706043904

Investigation of penetrator defect formation during high frequency induction welding in pipeline steels

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