Mechanical properties and corrosion behavior of circular oscillating laser direct energy deposited nickel-based superalloy after different heat-treatment processes
Heat treatment can enhance the microstructure uniformity and mitigate element segregation in the nickel-based superalloy GH3536 fabricated via laser directional energy deposition, augmenting its mechanical and corrosion properties. This study used laser beam oscillation to deposit GH3536 specimens a...
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Elsevier
2025-01-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424029405 |
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| author | Yelin Xia Haoran Wu Keyi Liu Jianbo Lei Yabao Hu Hanning Chen Chen Zheng |
| author_facet | Yelin Xia Haoran Wu Keyi Liu Jianbo Lei Yabao Hu Hanning Chen Chen Zheng |
| author_sort | Yelin Xia |
| collection | DOAJ |
| description | Heat treatment can enhance the microstructure uniformity and mitigate element segregation in the nickel-based superalloy GH3536 fabricated via laser directional energy deposition, augmenting its mechanical and corrosion properties. This study used laser beam oscillation to deposit GH3536 specimens and designed three heat treatment regimens: solution treatment (1177 °C/1 h), aging treatment (720 °C/8 h), and solution + aging treatment (1177 °C/1 h + 720 °C/8 h). The regulatory mechanisms of the treatments on the microstructure, tensile fracture, and corrosion behavior of the alloy were investigated. After solid solution treatment, the microstructure was completely recrystallized, and the long striped Laves phase was dissolved and transformed into granules; After aging treatment, a large amount of carbides precipitated at the grain boundaries. After solution treatment, the microstructure was completely recrystallized, and the striped Laves phase is dissolved and transformed into granules, improving the solid-solution strengthening effect of the GH3536 alloy; After aging treatment, a large amount of carbides precipitate at the grain boundaries, which enhanced the strength of the GH3536 alloy through the pinning effect and weakened the toughness. After solid solution and aging treatment, the tensile strength of GH3536 alloy increased to 840 MPa, and the elongation exceeded 39%, which were 22.90% and 9.7% higher than that of the as-deposited GH3536 alloy, respectively; During electrochemical corrosion, solid solution treatment and solution + aging treatment lead to more uniform microstructure, facilitating the formation of denser passivation films and enhancing corrosion resistance. After aging treatment, dendritic microstructures and precipitates are prone to induce potential differences, undermining the corrosion resistance. |
| format | Article |
| id | doaj-art-ff04da71b3544299817d8783bdd7d8df |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-ff04da71b3544299817d8783bdd7d8df2025-01-19T06:25:36ZengElsevierJournal of Materials Research and Technology2238-78542025-01-013410451056Mechanical properties and corrosion behavior of circular oscillating laser direct energy deposited nickel-based superalloy after different heat-treatment processesYelin Xia0Haoran Wu1Keyi Liu2Jianbo Lei3Yabao Hu4Hanning Chen5Chen Zheng6College of Artificial Intelligence, Tianjin University of Science and Technology, Tianjin, 300457, ChinaCollege of Artificial Intelligence, Tianjin University of Science and Technology, Tianjin, 300457, ChinaSchool of mechanical and electrical engineering, Xinjiang Institute of Engineering, Wulumuqi, 830023, ChinaLaser Technology Institute, Tiangong University, Tianjin, 300387, China; Corresponding author.College of Artificial Intelligence, Tianjin University of Science and Technology, Tianjin, 300457, China; Corresponding author.College of Artificial Intelligence, Tianjin University of Science and Technology, Tianjin, 300457, China; Corresponding author.The Open University of China, Beijing, 100039, China; Engineering Research Center of Integration and Application of Digital Learning Technology, Ministry of Education, Beijing, 100039, ChinaHeat treatment can enhance the microstructure uniformity and mitigate element segregation in the nickel-based superalloy GH3536 fabricated via laser directional energy deposition, augmenting its mechanical and corrosion properties. This study used laser beam oscillation to deposit GH3536 specimens and designed three heat treatment regimens: solution treatment (1177 °C/1 h), aging treatment (720 °C/8 h), and solution + aging treatment (1177 °C/1 h + 720 °C/8 h). The regulatory mechanisms of the treatments on the microstructure, tensile fracture, and corrosion behavior of the alloy were investigated. After solid solution treatment, the microstructure was completely recrystallized, and the long striped Laves phase was dissolved and transformed into granules; After aging treatment, a large amount of carbides precipitated at the grain boundaries. After solution treatment, the microstructure was completely recrystallized, and the striped Laves phase is dissolved and transformed into granules, improving the solid-solution strengthening effect of the GH3536 alloy; After aging treatment, a large amount of carbides precipitate at the grain boundaries, which enhanced the strength of the GH3536 alloy through the pinning effect and weakened the toughness. After solid solution and aging treatment, the tensile strength of GH3536 alloy increased to 840 MPa, and the elongation exceeded 39%, which were 22.90% and 9.7% higher than that of the as-deposited GH3536 alloy, respectively; During electrochemical corrosion, solid solution treatment and solution + aging treatment lead to more uniform microstructure, facilitating the formation of denser passivation films and enhancing corrosion resistance. After aging treatment, dendritic microstructures and precipitates are prone to induce potential differences, undermining the corrosion resistance.http://www.sciencedirect.com/science/article/pii/S2238785424029405Laser directional energy depositionNickel-based superalloyHeat-treatmentTensile mechanical propertyElectrochemical corrosion |
| spellingShingle | Yelin Xia Haoran Wu Keyi Liu Jianbo Lei Yabao Hu Hanning Chen Chen Zheng Mechanical properties and corrosion behavior of circular oscillating laser direct energy deposited nickel-based superalloy after different heat-treatment processes Journal of Materials Research and Technology Laser directional energy deposition Nickel-based superalloy Heat-treatment Tensile mechanical property Electrochemical corrosion |
| title | Mechanical properties and corrosion behavior of circular oscillating laser direct energy deposited nickel-based superalloy after different heat-treatment processes |
| title_full | Mechanical properties and corrosion behavior of circular oscillating laser direct energy deposited nickel-based superalloy after different heat-treatment processes |
| title_fullStr | Mechanical properties and corrosion behavior of circular oscillating laser direct energy deposited nickel-based superalloy after different heat-treatment processes |
| title_full_unstemmed | Mechanical properties and corrosion behavior of circular oscillating laser direct energy deposited nickel-based superalloy after different heat-treatment processes |
| title_short | Mechanical properties and corrosion behavior of circular oscillating laser direct energy deposited nickel-based superalloy after different heat-treatment processes |
| title_sort | mechanical properties and corrosion behavior of circular oscillating laser direct energy deposited nickel based superalloy after different heat treatment processes |
| topic | Laser directional energy deposition Nickel-based superalloy Heat-treatment Tensile mechanical property Electrochemical corrosion |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424029405 |
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