Abstract
This study compared the mechanical and microstructural properties produced during friction stir welding (FSW) of S275 structural steel in air and underwater. Post weld tests assessed the tensile strength, micro-hardness, distortion, Charpy impact toughness and fatigue performance in each case. The study showed that there was no significant difference in the strength, hardness or fatigue life of the air and underwater specimens. However, Charpy impact toughness was shown to decrease for the underwater specimens and was attributed to a lower degree of recrystallization caused by the higher rate of heat loss experienced when welding underwater. Reduced angular and longitudinal distortion was observed in the underwater welded plate compared to the plate welded in air.
| Original language | English |
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| Number of pages | 5 |
| Publication status | Published - 7 Aug 2014 |
| Event | International Conference on Materials and Product Technology, ICMPT14 - Loden Hotel, Vancouver, Canada Duration: 7 Aug 2014 → 8 Aug 2014 http://www.waset.org/conference/2014/08/vancouver/ICMPT |
Conference
| Conference | International Conference on Materials and Product Technology, ICMPT14 |
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| Country/Territory | Canada |
| City | Vancouver |
| Period | 7/08/14 → 8/08/14 |
| Internet address |
Keywords
- Charpy impact toughness
- distortion
- fatigue
- friction stir welding (FSW)
- micro-hardness
- underwater