Effect of solution treatment on microstructure and stress rupture properties of precipitation hardened IN718 superalloy fabricated by laser powder-bed fusion process
Effect of solution temperature in precipitation hardening on microstructure and stress rupture properties of IN718 superalloy fabricated by laser powder-bed fusion (LPBF) process is investigated. The LPBF samples were solution treated at 980, 1060 and 1130 °C, followed by two-step aging at 720 and 6...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-11-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785422015873 |
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| author | A.M. Chizari A. Kermanpur E. Foroozmehr A. Rezaeian F. Sadeghi Ali Rezaei |
| author_facet | A.M. Chizari A. Kermanpur E. Foroozmehr A. Rezaeian F. Sadeghi Ali Rezaei |
| author_sort | A.M. Chizari |
| collection | DOAJ |
| description | Effect of solution temperature in precipitation hardening on microstructure and stress rupture properties of IN718 superalloy fabricated by laser powder-bed fusion (LPBF) process is investigated. The LPBF samples were solution treated at 980, 1060 and 1130 °C, followed by two-step aging at 720 and 620 °C, each for 8 h. The results showed that the solution treatment at 980 °C was not suitable for stress rupture properties due to the formation of δ and Laves phases along grain boundaries, which promoted intergranular fracture. On the other hand, non-uniform grain growth occurred in the sample solution treated at 1130 °C, which reduced stress rupture properties. The solution treatment at 1060 °C was found more suitable to improve stress rupture behavior of the LPBF IN718 superalloy at 650 °C. The rupture life of the alloy approached 87 h due to the formation of suitable grain structure and distribution of γ′/γ″ strengthening phases. |
| first_indexed | 2024-04-11T05:53:26Z |
| format | Article |
| id | doaj.art-b6d00a66efcf420fbb73a071f69505ee |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-11T05:53:26Z |
| publishDate | 2022-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-b6d00a66efcf420fbb73a071f69505ee2022-12-22T04:42:00ZengElsevierJournal of Materials Research and Technology2238-78542022-11-012122962308Effect of solution treatment on microstructure and stress rupture properties of precipitation hardened IN718 superalloy fabricated by laser powder-bed fusion processA.M. Chizari0A. Kermanpur1E. Foroozmehr2A. Rezaeian3F. Sadeghi4Ali Rezaei5Department of Materials Engineering, Isfahan University of Technology, Isfahan, 84156-83111, Iran; Noura Co., Isfahan Science and Technology Town, IranDepartment of Materials Engineering, Isfahan University of Technology, Isfahan, 84156-83111, Iran; Corresponding author.Department of Mechanical Engineering, Isfahan University of Technology, Isfahan, 84156-83111, IranDepartment of Materials Engineering, Isfahan University of Technology, Isfahan, 84156-83111, IranGraduate Institute of Ferrous and Energy Materials Technology, Pohang University of Science and Technology, Pohang, 37673, Republic of KoreaNoura Co., Isfahan Science and Technology Town, IranEffect of solution temperature in precipitation hardening on microstructure and stress rupture properties of IN718 superalloy fabricated by laser powder-bed fusion (LPBF) process is investigated. The LPBF samples were solution treated at 980, 1060 and 1130 °C, followed by two-step aging at 720 and 620 °C, each for 8 h. The results showed that the solution treatment at 980 °C was not suitable for stress rupture properties due to the formation of δ and Laves phases along grain boundaries, which promoted intergranular fracture. On the other hand, non-uniform grain growth occurred in the sample solution treated at 1130 °C, which reduced stress rupture properties. The solution treatment at 1060 °C was found more suitable to improve stress rupture behavior of the LPBF IN718 superalloy at 650 °C. The rupture life of the alloy approached 87 h due to the formation of suitable grain structure and distribution of γ′/γ″ strengthening phases.http://www.sciencedirect.com/science/article/pii/S2238785422015873Laser powder-bed fusionIN718 superalloyPrecipitation hardeningStress rupture propertiesMicrostructure |
| spellingShingle | A.M. Chizari A. Kermanpur E. Foroozmehr A. Rezaeian F. Sadeghi Ali Rezaei Effect of solution treatment on microstructure and stress rupture properties of precipitation hardened IN718 superalloy fabricated by laser powder-bed fusion process Journal of Materials Research and Technology Laser powder-bed fusion IN718 superalloy Precipitation hardening Stress rupture properties Microstructure |
| title | Effect of solution treatment on microstructure and stress rupture properties of precipitation hardened IN718 superalloy fabricated by laser powder-bed fusion process |
| title_full | Effect of solution treatment on microstructure and stress rupture properties of precipitation hardened IN718 superalloy fabricated by laser powder-bed fusion process |
| title_fullStr | Effect of solution treatment on microstructure and stress rupture properties of precipitation hardened IN718 superalloy fabricated by laser powder-bed fusion process |
| title_full_unstemmed | Effect of solution treatment on microstructure and stress rupture properties of precipitation hardened IN718 superalloy fabricated by laser powder-bed fusion process |
| title_short | Effect of solution treatment on microstructure and stress rupture properties of precipitation hardened IN718 superalloy fabricated by laser powder-bed fusion process |
| title_sort | effect of solution treatment on microstructure and stress rupture properties of precipitation hardened in718 superalloy fabricated by laser powder bed fusion process |
| topic | Laser powder-bed fusion IN718 superalloy Precipitation hardening Stress rupture properties Microstructure |
| url | http://www.sciencedirect.com/science/article/pii/S2238785422015873 |
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