Additive manufacturing of alloys with programmable microstructure and properties
Abstract In metallurgy, mechanical deformation is essential to engineer the microstructure of metals and to tailor their mechanical properties. However, this practice is inapplicable to near-net-shape metal parts produced by additive manufacturing (AM), since it would irremediably compromise their c...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2023-10-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-023-42326-y |
| _version_ | 1797557965699416064 |
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| author | Shubo Gao Zhi Li Steven Van Petegem Junyu Ge Sneha Goel Joseph Vimal Vas Vladimir Luzin Zhiheng Hu Hang Li Seet Dario Ferreira Sanchez Helena Van Swygenhoven Huajian Gao Matteo Seita |
| author_facet | Shubo Gao Zhi Li Steven Van Petegem Junyu Ge Sneha Goel Joseph Vimal Vas Vladimir Luzin Zhiheng Hu Hang Li Seet Dario Ferreira Sanchez Helena Van Swygenhoven Huajian Gao Matteo Seita |
| author_sort | Shubo Gao |
| collection | DOAJ |
| description | Abstract In metallurgy, mechanical deformation is essential to engineer the microstructure of metals and to tailor their mechanical properties. However, this practice is inapplicable to near-net-shape metal parts produced by additive manufacturing (AM), since it would irremediably compromise their carefully designed geometries. In this work, we show how to circumvent this limitation by controlling the dislocation density and thermal stability of a steel alloy produced by laser powder bed fusion (LPBF) technology. We show that by manipulating the alloy’s solidification structure, we can ‘program’ recrystallization upon heat treatment without using mechanical deformation. When employed site-specifically, our strategy enables designing and creating complex microstructure architectures that combine recrystallized and non-recrystallized regions with different microstructural features and properties. We show how this heterogeneity may be conducive to materials with superior performance compared to those with monolithic microstructure. Our work inspires the design of high-performance metal parts with artificially engineered microstructures by AM. |
| first_indexed | 2024-03-10T17:23:42Z |
| format | Article |
| id | doaj.art-bc7786ad3b4a4f90ab1b0426373e531e |
| institution | Directory Open Access Journal |
| issn | 2041-1723 |
| language | English |
| last_indexed | 2024-03-10T17:23:42Z |
| publishDate | 2023-10-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj.art-bc7786ad3b4a4f90ab1b0426373e531e2023-11-20T10:15:12ZengNature PortfolioNature Communications2041-17232023-10-0114111110.1038/s41467-023-42326-yAdditive manufacturing of alloys with programmable microstructure and propertiesShubo Gao0Zhi Li1Steven Van Petegem2Junyu Ge3Sneha Goel4Joseph Vimal Vas5Vladimir Luzin6Zhiheng Hu7Hang Li Seet8Dario Ferreira Sanchez9Helena Van Swygenhoven10Huajian Gao11Matteo Seita12School of Mechanical and Aerospace Engineering, Nanyang Technological UniversityInstitute of High Performance Computing, Agency for Science, Technology and Research (A*STAR)Photon Science Division, Paul Scherrer InstituteSchool of Mechanical and Aerospace Engineering, Nanyang Technological UniversityPhoton Science Division, Paul Scherrer InstituteSchool of Materials Science and Engineering, Nanyang Technological UniversityAustralian Nuclear Science & Technology Organisation (ANSTO)Additive Manufacturing Division, Singapore Institute of Manufacturing Technology (SIMTech), Agency for Science, Technology and Research (A*STAR)Additive Manufacturing Division, Singapore Institute of Manufacturing Technology (SIMTech), Agency for Science, Technology and Research (A*STAR)Photon Science Division, Paul Scherrer InstitutePhoton Science Division, Paul Scherrer InstituteSchool of Mechanical and Aerospace Engineering, Nanyang Technological UniversityDepartment of Engineering, University of CambridgeAbstract In metallurgy, mechanical deformation is essential to engineer the microstructure of metals and to tailor their mechanical properties. However, this practice is inapplicable to near-net-shape metal parts produced by additive manufacturing (AM), since it would irremediably compromise their carefully designed geometries. In this work, we show how to circumvent this limitation by controlling the dislocation density and thermal stability of a steel alloy produced by laser powder bed fusion (LPBF) technology. We show that by manipulating the alloy’s solidification structure, we can ‘program’ recrystallization upon heat treatment without using mechanical deformation. When employed site-specifically, our strategy enables designing and creating complex microstructure architectures that combine recrystallized and non-recrystallized regions with different microstructural features and properties. We show how this heterogeneity may be conducive to materials with superior performance compared to those with monolithic microstructure. Our work inspires the design of high-performance metal parts with artificially engineered microstructures by AM.https://doi.org/10.1038/s41467-023-42326-y |
| spellingShingle | Shubo Gao Zhi Li Steven Van Petegem Junyu Ge Sneha Goel Joseph Vimal Vas Vladimir Luzin Zhiheng Hu Hang Li Seet Dario Ferreira Sanchez Helena Van Swygenhoven Huajian Gao Matteo Seita Additive manufacturing of alloys with programmable microstructure and properties Nature Communications |
| title | Additive manufacturing of alloys with programmable microstructure and properties |
| title_full | Additive manufacturing of alloys with programmable microstructure and properties |
| title_fullStr | Additive manufacturing of alloys with programmable microstructure and properties |
| title_full_unstemmed | Additive manufacturing of alloys with programmable microstructure and properties |
| title_short | Additive manufacturing of alloys with programmable microstructure and properties |
| title_sort | additive manufacturing of alloys with programmable microstructure and properties |
| url | https://doi.org/10.1038/s41467-023-42326-y |
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