Assessing the thermal stability of laser powder bed fused AlSi10Mg by short-period thermal exposure
Laser powder bed fused (LPBFed) AlSi10Mg is recognised for its superior mechanical properties. However, its thermal stability has never been justified. Herein, we exposed as-built AlSi10Mg to different temperatures (200–500°C) for only 3 min to evaluate its thermal stability. Results showed that LPB...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2023-12-01
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| Series: | Virtual and Physical Prototyping |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/17452759.2023.2165122 |
| _version_ | 1797678642167283712 |
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| author | Jie Wan Huarui Geng Biao Chen Jianghua Shen Katsuyoshi Kondoh Jinshan Li |
| author_facet | Jie Wan Huarui Geng Biao Chen Jianghua Shen Katsuyoshi Kondoh Jinshan Li |
| author_sort | Jie Wan |
| collection | DOAJ |
| description | Laser powder bed fused (LPBFed) AlSi10Mg is recognised for its superior mechanical properties. However, its thermal stability has never been justified. Herein, we exposed as-built AlSi10Mg to different temperatures (200–500°C) for only 3 min to evaluate its thermal stability. Results showed that LPBFed AlSi10Mg had relatively low thermal stability. Only 3 min of thermal exposure at 200°C would deteriorate its tensile strength dramatically. Microstructural analysis revealed that with increasing thermal input, as-built AlSi10Mg exhibited a microstructural evolution similar to annealing of cold-worked metals, namely recovery, recrystallisation followed by grain-growth. The excessive energy stored in as-built microstructure due to fast cooling during LPBF was deduced as the driving force for this phenomenon. Therefore, such microstructural change was at the expense of dislocations stored in the as-built material, which in turn caused deterioration in tensile strength. The present findings may provide guidance for the application of LPBFed AlSi10Mg. |
| first_indexed | 2024-03-11T23:02:53Z |
| format | Article |
| id | doaj.art-b1561a7d07df4f2d8d58a99b5c4d3b58 |
| institution | Directory Open Access Journal |
| issn | 1745-2759 1745-2767 |
| language | English |
| last_indexed | 2024-03-11T23:02:53Z |
| publishDate | 2023-12-01 |
| publisher | Taylor & Francis Group |
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| series | Virtual and Physical Prototyping |
| spelling | doaj.art-b1561a7d07df4f2d8d58a99b5c4d3b582023-09-21T14:38:04ZengTaylor & Francis GroupVirtual and Physical Prototyping1745-27591745-27672023-12-0118110.1080/17452759.2023.21651222165122Assessing the thermal stability of laser powder bed fused AlSi10Mg by short-period thermal exposureJie Wan0Huarui Geng1Biao Chen2Jianghua Shen3Katsuyoshi Kondoh4Jinshan Li5Northwestern Polytechnical UniversityNorthwestern Polytechnical UniversityNorthwestern Polytechnical UniversityNorthwestern Polytechnical UniversityJoining and Welding Research InstituteNorthwestern Polytechnical UniversityLaser powder bed fused (LPBFed) AlSi10Mg is recognised for its superior mechanical properties. However, its thermal stability has never been justified. Herein, we exposed as-built AlSi10Mg to different temperatures (200–500°C) for only 3 min to evaluate its thermal stability. Results showed that LPBFed AlSi10Mg had relatively low thermal stability. Only 3 min of thermal exposure at 200°C would deteriorate its tensile strength dramatically. Microstructural analysis revealed that with increasing thermal input, as-built AlSi10Mg exhibited a microstructural evolution similar to annealing of cold-worked metals, namely recovery, recrystallisation followed by grain-growth. The excessive energy stored in as-built microstructure due to fast cooling during LPBF was deduced as the driving force for this phenomenon. Therefore, such microstructural change was at the expense of dislocations stored in the as-built material, which in turn caused deterioration in tensile strength. The present findings may provide guidance for the application of LPBFed AlSi10Mg.http://dx.doi.org/10.1080/17452759.2023.2165122alsi10mglaser powder bed fusion (lpbf)thermal stabilitydeformation-free recrystallisation (dfrx) |
| spellingShingle | Jie Wan Huarui Geng Biao Chen Jianghua Shen Katsuyoshi Kondoh Jinshan Li Assessing the thermal stability of laser powder bed fused AlSi10Mg by short-period thermal exposure Virtual and Physical Prototyping alsi10mg laser powder bed fusion (lpbf) thermal stability deformation-free recrystallisation (dfrx) |
| title | Assessing the thermal stability of laser powder bed fused AlSi10Mg by short-period thermal exposure |
| title_full | Assessing the thermal stability of laser powder bed fused AlSi10Mg by short-period thermal exposure |
| title_fullStr | Assessing the thermal stability of laser powder bed fused AlSi10Mg by short-period thermal exposure |
| title_full_unstemmed | Assessing the thermal stability of laser powder bed fused AlSi10Mg by short-period thermal exposure |
| title_short | Assessing the thermal stability of laser powder bed fused AlSi10Mg by short-period thermal exposure |
| title_sort | assessing the thermal stability of laser powder bed fused alsi10mg by short period thermal exposure |
| topic | alsi10mg laser powder bed fusion (lpbf) thermal stability deformation-free recrystallisation (dfrx) |
| url | http://dx.doi.org/10.1080/17452759.2023.2165122 |
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