Effect of heat input on microstructure and mechanical properties of GH159 and GH4169 dissimilar joints by laser beam welding
Co-based superalloy GH159 and Ni-based superalloy GH4169 have been successfully joined by laser beam welding and the effect of heat input on microstructure and properties of dissimilar joints were investigated systematically. The results showed that weld seams exhibited a nail shape and full penetra...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2021-01-01
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| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/ac1eca |
| _version_ | 1797746785902395392 |
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| author | Qian Ran Song Xiang Yuanbiao Tan Shuang Hu |
| author_facet | Qian Ran Song Xiang Yuanbiao Tan Shuang Hu |
| author_sort | Qian Ran |
| collection | DOAJ |
| description | Co-based superalloy GH159 and Ni-based superalloy GH4169 have been successfully joined by laser beam welding and the effect of heat input on microstructure and properties of dissimilar joints were investigated systematically. The results showed that weld seams exhibited a nail shape and full penetration was attained at all dissimilar joints. Increasing grain size towards the fusion zone (FZ) were observed in the heat affected zone (HAZ) on the GH159 side while an increasing dissolution of γ ′ and γ ′ towards the FZ was attained at the HAZ on the GH4169 side. These resulted in decreasing microhardness towards FZ. Tensile failure was found in the FZ with the lowest microhardness. Meanwhile, the ultimate tensile strength (UTS) of the dissimilar joints increased with the decreasing of heat input. The high UTS of dissimilar joint with low heat input can be ascribed to the lower volume fraction of the Laves phase and the smaller dendrite arm spacing. |
| first_indexed | 2024-03-12T15:41:49Z |
| format | Article |
| id | doaj.art-1460e432f9fe48bd828a36173162057a |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:41:49Z |
| publishDate | 2021-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-1460e432f9fe48bd828a36173162057a2023-08-09T15:54:28ZengIOP PublishingMaterials Research Express2053-15912021-01-018808652010.1088/2053-1591/ac1ecaEffect of heat input on microstructure and mechanical properties of GH159 and GH4169 dissimilar joints by laser beam weldingQian Ran0Song Xiang1https://orcid.org/0000-0002-4184-2242Yuanbiao Tan2Shuang Hu3Guizhou Key Laboratory of Materials Mechanical Behavior and Microstructure, College of Materials and Metallurgy, Guizhou University , Guiyang 550025, People’s Republic of China; National & Local Joint Engineering Laboratory for High-Performance Metal Structure Material and Advanced Manufacturing Technology, Guizhou University , Guiyang 550025, People’s Republic of ChinaGuizhou Key Laboratory of Materials Mechanical Behavior and Microstructure, College of Materials and Metallurgy, Guizhou University , Guiyang 550025, People’s Republic of China; National & Local Joint Engineering Laboratory for High-Performance Metal Structure Material and Advanced Manufacturing Technology, Guizhou University , Guiyang 550025, People’s Republic of ChinaGuizhou Key Laboratory of Materials Mechanical Behavior and Microstructure, College of Materials and Metallurgy, Guizhou University , Guiyang 550025, People’s Republic of China; National & Local Joint Engineering Laboratory for High-Performance Metal Structure Material and Advanced Manufacturing Technology, Guizhou University , Guiyang 550025, People’s Republic of ChinaGuizhou Key Laboratory of Materials Mechanical Behavior and Microstructure, College of Materials and Metallurgy, Guizhou University , Guiyang 550025, People’s Republic of China; National & Local Joint Engineering Laboratory for High-Performance Metal Structure Material and Advanced Manufacturing Technology, Guizhou University , Guiyang 550025, People’s Republic of ChinaCo-based superalloy GH159 and Ni-based superalloy GH4169 have been successfully joined by laser beam welding and the effect of heat input on microstructure and properties of dissimilar joints were investigated systematically. The results showed that weld seams exhibited a nail shape and full penetration was attained at all dissimilar joints. Increasing grain size towards the fusion zone (FZ) were observed in the heat affected zone (HAZ) on the GH159 side while an increasing dissolution of γ ′ and γ ′ towards the FZ was attained at the HAZ on the GH4169 side. These resulted in decreasing microhardness towards FZ. Tensile failure was found in the FZ with the lowest microhardness. Meanwhile, the ultimate tensile strength (UTS) of the dissimilar joints increased with the decreasing of heat input. The high UTS of dissimilar joint with low heat input can be ascribed to the lower volume fraction of the Laves phase and the smaller dendrite arm spacing.https://doi.org/10.1088/2053-1591/ac1ecalaser beam weldingdissimilar jointlaves phasemechanical properties |
| spellingShingle | Qian Ran Song Xiang Yuanbiao Tan Shuang Hu Effect of heat input on microstructure and mechanical properties of GH159 and GH4169 dissimilar joints by laser beam welding Materials Research Express laser beam welding dissimilar joint laves phase mechanical properties |
| title | Effect of heat input on microstructure and mechanical properties of GH159 and GH4169 dissimilar joints by laser beam welding |
| title_full | Effect of heat input on microstructure and mechanical properties of GH159 and GH4169 dissimilar joints by laser beam welding |
| title_fullStr | Effect of heat input on microstructure and mechanical properties of GH159 and GH4169 dissimilar joints by laser beam welding |
| title_full_unstemmed | Effect of heat input on microstructure and mechanical properties of GH159 and GH4169 dissimilar joints by laser beam welding |
| title_short | Effect of heat input on microstructure and mechanical properties of GH159 and GH4169 dissimilar joints by laser beam welding |
| title_sort | effect of heat input on microstructure and mechanical properties of gh159 and gh4169 dissimilar joints by laser beam welding |
| topic | laser beam welding dissimilar joint laves phase mechanical properties |
| url | https://doi.org/10.1088/2053-1591/ac1eca |
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