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Mechanical and structural behavior of high-strength low-alloy steel pad welded by underwater wet welding conditions
Abstract
The aim of the paper was to determine the metallurgical and mechanical behaviors of a high-strength low-alloy (HSLA) steel pad-welded specimen used in the structures of industrial and naval parts. Then to predict the metallurgical consequences (nature of the phases present) and the mechanical properties (hardness and impact strength) of the pad-welded steel obtained by underwater wet welding with different heat input values. The XRD patterns clearly reveal a ferritic alpha steel S460N for both parameters. The ferritic quantification is above 70 wt% for low-alloy steel. The welded specimens are characterized by the presence of different phases. In a specimen performed with higher heat input, the complex oxide Mn2TiO4 was found to be around 7 wt%. Moreover, the solid solution formed with iron and manganese was observed. The hardness results obtained by indentation showed that the higher heat input resulted in higher hardness values (54 HRC) than for specimen performed with lower parameters (45 HRC). The impact test showed that the toughness of both pad-welded layers is greater than the toughness of the base material (40 kV for S2 and 34 kV for S1 about 27 kV for low-alloy steel). Moreover, it was observed that higher heat input results in increasing the impact strength of pad welds.
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Authors (4)
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Rassim Younes Dr.
- Université de Bejaia, Algieria
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Idir Abdelhak Dr.
- Université de Bejaia, Algieria
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Mohand Amokrane Bradai Prof.
- Université de Bejaia, Algieria
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Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1007/s00170-023-12681-7
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
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INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
no. 129,
pages 5615 - 5624,
ISSN: 0268-3768 - Language:
- English
- Publication year:
- 2023
- Bibliographic description:
- Younes R., Tomków J., Abdelhak I., Bradai M. A.: Mechanical and structural behavior of high-strength low-alloy steel pad welded by underwater wet welding conditions// INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY -,iss. 129 (2023), s.5615-5624
- DOI:
- Digital Object Identifier (open in new tab) 10.1007/s00170-023-12681-7
- Sources of funding:
-
- Statutory activity/subsidy
- Verified by:
- Gdańsk University of Technology
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