Orientation, dendrites and precipitates in Hastelloy C276 alloy fabricated by laser and arc hybrid additive manufacturing
In this work, Hastelloy C276 alloy with exceptional strength and ultra-high elongation is fabricated using laser and arc hybrid additive manufacturing (LHAM). The specimen undergoes solution treatment at 1177 °C for 30 min, followed by water quenching. Compared to wire arc additive manufacturing (WA...
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Elsevier
2025-03-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425002881 |
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| author | Qingwen Deng Yugang Miao Zhibin Yang Yuyang Zhao Ji Liu Huijun Li Bintao Wu |
| author_facet | Qingwen Deng Yugang Miao Zhibin Yang Yuyang Zhao Ji Liu Huijun Li Bintao Wu |
| author_sort | Qingwen Deng |
| collection | DOAJ |
| description | In this work, Hastelloy C276 alloy with exceptional strength and ultra-high elongation is fabricated using laser and arc hybrid additive manufacturing (LHAM). The specimen undergoes solution treatment at 1177 °C for 30 min, followed by water quenching. Compared to wire arc additive manufacturing (WAAM), LHAM significantly refines columnar grains, reduces P-phase precipitates, and decreases texture strength, attributed to the increased cooling rate from laser application. The LHAM specimen exhibits improved tensile strength, likely due to smaller grain size, higher dislocation density, and reduced precipitate content. Further heat treatment (LHAM-HT) results in reduced texture strength, equiaxed grains with annealing twins and no precipitates detected. The LHAM-HT specimens show lower hardness and yield strength (190.33 HV and 338 MPa) due to dislocation annihilation, but enhanced elongation and tensile strength (63.5% and 713 MPa) owing to fine grain size and absence of precipitates. The lower yield-to-tensile strength ratio suggests improved safety, and a high number of Σ3 grain boundaries indicates excellent mechanical properties. This research highlights that LHAM, paired with suitable heat treatment, can effectively produce high-performance Hastelloy C276 alloy, offering a practical approach to nickel-based alloy additive manufacturing. |
| format | Article |
| id | doaj-art-0d54e7a32406444ab51f64b0a7a5de40 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-0d54e7a32406444ab51f64b0a7a5de402025-02-09T05:00:34ZengElsevierJournal of Materials Research and Technology2238-78542025-03-013531293143Orientation, dendrites and precipitates in Hastelloy C276 alloy fabricated by laser and arc hybrid additive manufacturingQingwen Deng0Yugang Miao1Zhibin Yang2Yuyang Zhao3Ji Liu4Huijun Li5Bintao Wu6National Key Laboratory of Science and Technology on Underwater Vehicle, Harbin Engineering University, Harbin, 150001, ChinaNational Key Laboratory of Science and Technology on Underwater Vehicle, Harbin Engineering University, Harbin, 150001, ChinaSchool of Materials Science and Engineering, Dalian Jiaotong University, Dalian, 116028, ChinaNational Key Laboratory of Science and Technology on Underwater Vehicle, Harbin Engineering University, Harbin, 150001, ChinaKey Laboratory of Superlight Materials & Surface Technology, Ministry of Education, Harbin Engineering University, Harbin, 150001, China; Corresponding author.School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, New South Wales, 2522, AustraliaSchool of Materials and New Energy, Ningxia University, Yinchuan, 750400, China; Corresponding author.In this work, Hastelloy C276 alloy with exceptional strength and ultra-high elongation is fabricated using laser and arc hybrid additive manufacturing (LHAM). The specimen undergoes solution treatment at 1177 °C for 30 min, followed by water quenching. Compared to wire arc additive manufacturing (WAAM), LHAM significantly refines columnar grains, reduces P-phase precipitates, and decreases texture strength, attributed to the increased cooling rate from laser application. The LHAM specimen exhibits improved tensile strength, likely due to smaller grain size, higher dislocation density, and reduced precipitate content. Further heat treatment (LHAM-HT) results in reduced texture strength, equiaxed grains with annealing twins and no precipitates detected. The LHAM-HT specimens show lower hardness and yield strength (190.33 HV and 338 MPa) due to dislocation annihilation, but enhanced elongation and tensile strength (63.5% and 713 MPa) owing to fine grain size and absence of precipitates. The lower yield-to-tensile strength ratio suggests improved safety, and a high number of Σ3 grain boundaries indicates excellent mechanical properties. This research highlights that LHAM, paired with suitable heat treatment, can effectively produce high-performance Hastelloy C276 alloy, offering a practical approach to nickel-based alloy additive manufacturing.http://www.sciencedirect.com/science/article/pii/S2238785425002881Hastelloy C276 alloyLaser and arc hybrid additive manufacturingMicrostructureMechanical propertiesHeat treatment |
| spellingShingle | Qingwen Deng Yugang Miao Zhibin Yang Yuyang Zhao Ji Liu Huijun Li Bintao Wu Orientation, dendrites and precipitates in Hastelloy C276 alloy fabricated by laser and arc hybrid additive manufacturing Journal of Materials Research and Technology Hastelloy C276 alloy Laser and arc hybrid additive manufacturing Microstructure Mechanical properties Heat treatment |
| title | Orientation, dendrites and precipitates in Hastelloy C276 alloy fabricated by laser and arc hybrid additive manufacturing |
| title_full | Orientation, dendrites and precipitates in Hastelloy C276 alloy fabricated by laser and arc hybrid additive manufacturing |
| title_fullStr | Orientation, dendrites and precipitates in Hastelloy C276 alloy fabricated by laser and arc hybrid additive manufacturing |
| title_full_unstemmed | Orientation, dendrites and precipitates in Hastelloy C276 alloy fabricated by laser and arc hybrid additive manufacturing |
| title_short | Orientation, dendrites and precipitates in Hastelloy C276 alloy fabricated by laser and arc hybrid additive manufacturing |
| title_sort | orientation dendrites and precipitates in hastelloy c276 alloy fabricated by laser and arc hybrid additive manufacturing |
| topic | Hastelloy C276 alloy Laser and arc hybrid additive manufacturing Microstructure Mechanical properties Heat treatment |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425002881 |
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