Revealing martensitic transformation and α/β interface evolution in electron beam melting three-dimensional-printed Ti-6Al-4V
As an important metal three-dimensional printing technology, electron beam melting (EBM) is gaining increasing attention due to its huge potential applications in aerospace and biomedical fields. EBM processing of Ti-6Al-4V as well as its microstructure and mechanical properties were extensively inv...
| Main Authors: | , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
2018
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| Online Access: | https://hdl.handle.net/10356/87489 http://hdl.handle.net/10220/46746 |
| _version_ | 1826130150880706560 |
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| author | Tan, Xipeng Kok, Yihong Toh, Wei Quan Tan, Yu Jun Descoins, Marion Mangelinck, Dominique Tor, Shu Beng Leong, Kah Fai Chua, Chee Kai |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Tan, Xipeng Kok, Yihong Toh, Wei Quan Tan, Yu Jun Descoins, Marion Mangelinck, Dominique Tor, Shu Beng Leong, Kah Fai Chua, Chee Kai |
| author_sort | Tan, Xipeng |
| collection | NTU |
| description | As an important metal three-dimensional printing technology, electron beam melting (EBM) is gaining increasing attention due to its huge potential applications in aerospace and biomedical fields. EBM processing of Ti-6Al-4V as well as its microstructure and mechanical properties were extensively investigated. However, it is still lack of quantitative studies regarding its microstructural evolution, indicative of EBM thermal process. Here, we report α′ martensitic transformation and α/β interface evolution in varied printing thicknesses of EBM-printed Ti-6Al-4V block samples by means of atom probe tomography. Quantitative chemical composition analysis suggests a general phase transformation sequence. By increasing in-fill hatched thickness, elemental partitioning ratios arise and β volume fraction is increased. Furthermore, we observe kinetic vanadium segregation and aluminum depletion at interface front and the resultant α/β interface widening phenomenon. It may give rise to an increased α/β lattice mismatch and weakened α/β interfaces, which could account for the degraded strength as printing thickness increases. |
| first_indexed | 2024-10-01T07:52:08Z |
| format | Journal Article |
| id | ntu-10356/87489 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:52:08Z |
| publishDate | 2018 |
| record_format | dspace |
| spelling | ntu-10356/874892022-02-16T16:30:55Z Revealing martensitic transformation and α/β interface evolution in electron beam melting three-dimensional-printed Ti-6Al-4V Tan, Xipeng Kok, Yihong Toh, Wei Quan Tan, Yu Jun Descoins, Marion Mangelinck, Dominique Tor, Shu Beng Leong, Kah Fai Chua, Chee Kai School of Mechanical and Aerospace Engineering Singapore Centre for 3D Printing 3D Printing DRNTU::Engineering::Mechanical engineering Electron Beam Melting As an important metal three-dimensional printing technology, electron beam melting (EBM) is gaining increasing attention due to its huge potential applications in aerospace and biomedical fields. EBM processing of Ti-6Al-4V as well as its microstructure and mechanical properties were extensively investigated. However, it is still lack of quantitative studies regarding its microstructural evolution, indicative of EBM thermal process. Here, we report α′ martensitic transformation and α/β interface evolution in varied printing thicknesses of EBM-printed Ti-6Al-4V block samples by means of atom probe tomography. Quantitative chemical composition analysis suggests a general phase transformation sequence. By increasing in-fill hatched thickness, elemental partitioning ratios arise and β volume fraction is increased. Furthermore, we observe kinetic vanadium segregation and aluminum depletion at interface front and the resultant α/β interface widening phenomenon. It may give rise to an increased α/β lattice mismatch and weakened α/β interfaces, which could account for the degraded strength as printing thickness increases. NRF (Natl Research Foundation, S’pore) ASTAR (Agency for Sci., Tech. and Research, S’pore) Published version 2018-11-30T03:02:53Z 2019-12-06T16:42:59Z 2018-11-30T03:02:53Z 2019-12-06T16:42:59Z 2016 Journal Article Tan, X., Kok, Y., Toh, W. Q., Tan, Y. J., Descoins, M., Mangelinck, D., . . . Chua, C. K. (2016). Revealing martensitic transformation and α/β interface evolution in electron beam melting three-dimensional-printed Ti-6Al-4V. Scientific Reports, 6, 26039-. doi:10.1038/srep26039 https://hdl.handle.net/10356/87489 http://hdl.handle.net/10220/46746 10.1038/srep26039 27185285 en Scientific Reports © 2016 The Authors (Nature Publishing Group). This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ 10 p. application/pdf |
| spellingShingle | 3D Printing DRNTU::Engineering::Mechanical engineering Electron Beam Melting Tan, Xipeng Kok, Yihong Toh, Wei Quan Tan, Yu Jun Descoins, Marion Mangelinck, Dominique Tor, Shu Beng Leong, Kah Fai Chua, Chee Kai Revealing martensitic transformation and α/β interface evolution in electron beam melting three-dimensional-printed Ti-6Al-4V |
| title | Revealing martensitic transformation and α/β interface evolution in electron beam melting three-dimensional-printed Ti-6Al-4V |
| title_full | Revealing martensitic transformation and α/β interface evolution in electron beam melting three-dimensional-printed Ti-6Al-4V |
| title_fullStr | Revealing martensitic transformation and α/β interface evolution in electron beam melting three-dimensional-printed Ti-6Al-4V |
| title_full_unstemmed | Revealing martensitic transformation and α/β interface evolution in electron beam melting three-dimensional-printed Ti-6Al-4V |
| title_short | Revealing martensitic transformation and α/β interface evolution in electron beam melting three-dimensional-printed Ti-6Al-4V |
| title_sort | revealing martensitic transformation and α β interface evolution in electron beam melting three dimensional printed ti 6al 4v |
| topic | 3D Printing DRNTU::Engineering::Mechanical engineering Electron Beam Melting |
| url | https://hdl.handle.net/10356/87489 http://hdl.handle.net/10220/46746 |
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