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Keyhole TIG Welding...
Keyhole TIG Welding of New Co-Lean Nickel-Based Superalloy G27
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- Ariaseta, Achmad (author)
- Högskolan Väst,Avdelningen för svetsteknologi (SV),KAMPT
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- Pick, Dario (author)
- Högskolan Väst,Avdelningen för avverkande och additativa tillverkningsprocesser (AAT),KAMPT
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- Andersson, Joel, 1981- (author)
- Högskolan Väst,Avdelningen för svetsteknologi (SV),KAMPT
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- Ojo, Olanrewaju (author)
- Department of Mechanical Engineering, University of Manitoba, Winnipeg (CAN)
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(creator_code:org_t)
- Springer Cham, 2023
- 2023
- English.
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In: Proceedings of the 10th International Symposium on Superalloy 718 and Derivatives. - : Springer Cham. - 9783031274473 - 9783031274497 ; , s. 807-824
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- The influence of keyhole TIG (K-TIG) welding parameters on the weld geometry and defects of a new Co-lean nickel-based superalloy G27 was studied, and the microstructures of the heat-affected zone (HAZ) and fusion zone (FZ) of the K-TIG-welded Alloy G27 were characterized. No cracks are found in the FZ and HAZ. Minimum weld width and face underfill statistically were significantly influenced by travel speed and interaction current*travel speed. Root excess weld metal was only significantly influenced by travel speed. Face excess weld metal was significantly influenced by all the factors, including their interaction. On the other hand, all the factors, including their interaction, did not significantly influence the average pore diameter. In the FZ microstructure, interdendritic microconstituents are identified as (Nb, Ti)C particles and γ/Laves eutectic constituents. In addition, a plate-like phase is observed surrounding the Laves phase, and γʹ precipitates are found to be inhomogeneously precipitated in the FZ. In the partially melted zone (PMZ), (Nb, Ti)C, Laves phase, γʹ precipitates, and plate-like particles are found in the liquated and resolidified regions, suggesting the solidification behavior in PMZ is likely to follow a similar pattern to the one observed in FZ.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Manufacturing, Surface and Joining Technology (hsv//eng)
Keyword
- K-TIG welding
- Weld geometry
- Weld defects
- Microstructure
- G27 superalloy
- Production Technology
- Produktionsteknik
Publication and Content Type
- ref (subject category)
- kon (subject category)
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