Remarkable strengthening effects of cells in laser powder bed fusion-processed Inconel 718
Alloys fabricated via laser powder bed fusion (LPBF) exhibit superior strength. This study investigates the individual strengthening effects of the nanometre-sized cellular and micrometre-sized crystallographic lamellar structures in the LPBF-fabricated Inconel 718 alloy by selectively eliminating t...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2025-08-01
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| Series: | Materials Research Letters |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/21663831.2025.2522801 |
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| author | Taichi Kikukawa Takuya Ishimoto Hyoung Seop Kim Takayoshi Nakano |
| author_facet | Taichi Kikukawa Takuya Ishimoto Hyoung Seop Kim Takayoshi Nakano |
| author_sort | Taichi Kikukawa |
| collection | DOAJ |
| description | Alloys fabricated via laser powder bed fusion (LPBF) exhibit superior strength. This study investigates the individual strengthening effects of the nanometre-sized cellular and micrometre-sized crystallographic lamellar structures in the LPBF-fabricated Inconel 718 alloy by selectively eliminating these structures through heat treatment and a novel laser scanning strategy, respectively. While cellular structures increased the yield strength by approximately 38%, lamellar structures contributed to only a marginal 2% increase. This finding demonstrates the remarkable strengthening effect of cells on LPBF products. This study highlights that cells are not merely microstructures but are critical features governing the exceptional strength of LPBF products. |
| format | Article |
| id | doaj-art-931a6778ebb04085ad4202427fa3bfc4 |
| institution | Kabale University |
| issn | 2166-3831 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Materials Research Letters |
| spelling | doaj-art-931a6778ebb04085ad4202427fa3bfc42025-08-20T04:02:31ZengTaylor & Francis GroupMaterials Research Letters2166-38312025-08-0113883784310.1080/21663831.2025.2522801Remarkable strengthening effects of cells in laser powder bed fusion-processed Inconel 718Taichi Kikukawa0Takuya Ishimoto1Hyoung Seop Kim2Takayoshi Nakano3Division of Materials and Manufacturing Science, Graduate School of Engineering, The University of Osaka, Osaka, JapanDivision of Materials and Manufacturing Science, Graduate School of Engineering, The University of Osaka, Osaka, JapanDepartment of Materials Science and Engineering, Pohang University of Science and Technology, Pohang, South KoreaDivision of Materials and Manufacturing Science, Graduate School of Engineering, The University of Osaka, Osaka, JapanAlloys fabricated via laser powder bed fusion (LPBF) exhibit superior strength. This study investigates the individual strengthening effects of the nanometre-sized cellular and micrometre-sized crystallographic lamellar structures in the LPBF-fabricated Inconel 718 alloy by selectively eliminating these structures through heat treatment and a novel laser scanning strategy, respectively. While cellular structures increased the yield strength by approximately 38%, lamellar structures contributed to only a marginal 2% increase. This finding demonstrates the remarkable strengthening effect of cells on LPBF products. This study highlights that cells are not merely microstructures but are critical features governing the exceptional strength of LPBF products.https://www.tandfonline.com/doi/10.1080/21663831.2025.2522801Laser powder bed fusioncellular microstructureslamellar structuresingle crystalstrengthening |
| spellingShingle | Taichi Kikukawa Takuya Ishimoto Hyoung Seop Kim Takayoshi Nakano Remarkable strengthening effects of cells in laser powder bed fusion-processed Inconel 718 Materials Research Letters Laser powder bed fusion cellular microstructures lamellar structure single crystal strengthening |
| title | Remarkable strengthening effects of cells in laser powder bed fusion-processed Inconel 718 |
| title_full | Remarkable strengthening effects of cells in laser powder bed fusion-processed Inconel 718 |
| title_fullStr | Remarkable strengthening effects of cells in laser powder bed fusion-processed Inconel 718 |
| title_full_unstemmed | Remarkable strengthening effects of cells in laser powder bed fusion-processed Inconel 718 |
| title_short | Remarkable strengthening effects of cells in laser powder bed fusion-processed Inconel 718 |
| title_sort | remarkable strengthening effects of cells in laser powder bed fusion processed inconel 718 |
| topic | Laser powder bed fusion cellular microstructures lamellar structure single crystal strengthening |
| url | https://www.tandfonline.com/doi/10.1080/21663831.2025.2522801 |
| work_keys_str_mv | AT taichikikukawa remarkablestrengtheningeffectsofcellsinlaserpowderbedfusionprocessedinconel718 AT takuyaishimoto remarkablestrengtheningeffectsofcellsinlaserpowderbedfusionprocessedinconel718 AT hyoungseopkim remarkablestrengtheningeffectsofcellsinlaserpowderbedfusionprocessedinconel718 AT takayoshinakano remarkablestrengtheningeffectsofcellsinlaserpowderbedfusionprocessedinconel718 |