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Abstract
The participation of high strength steels in marine and offshore structures is increasing, which makes it necessary to develop recommendations for underwater repair welding works. The article presents the results of bead-on-plate welded specimens made of S700MC high strength steel in underwater wet welding conditions by covered elec- trodes. Three specimens with heat input values in the range 0.91-1.05 kJ/mm were made. The specimens were sub- jected to visual, metallographic, macro- and microscopic tests as well as hardness measurements using the Vickers method. It was found that the higher heat input leads to formation of mixed bainite-martensite microstructure in the heat-affected zone (HAZ). Lower heat input value results in presence of martensite in HAZ. It was shown that in the scope of the performed tests, the maximum hardness of HAZ did not exceed the critical value for the material group, and the increase in heat input caused the decrease of hardness by about 25 HV10 to a level 250-260 HV10.
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- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.12913/22998624/140223
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- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
Advances in Science and Technology Research Journal
no. 15,
pages 288 - 296,
ISSN: 2080-4075 - Language:
- English
- Publication year:
- 2021
- Bibliographic description:
- Tomków J., Świerczyńska A., Landowski M., Wolski A., Rogalski G.: Bead-on-Plate Underwater Wet Welding on S700MC Steel// Advances in Science and Technology. Research Journal -Vol. 15,iss. 3 (2021), s.288-296
- DOI:
- Digital Object Identifier (open in new tab) 10.12913/22998624/140223
- Sources of funding:
-
- Statutory activity/subsidy
- Verified by:
- Gdańsk University of Technology
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