Boron-induced microstructural manipulation of titanium and titanium alloys in additive manufacturing
While the role of boron (B) has been thoroughly clarified in titanium (Ti) castings, the microstructural changes triggered in additive manufacturing (AM) are still the subject of debate in the literature. Many contributions have confirmed the B-induced microstructural refinement in Ti-based AM parts...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2023-08-01
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| Series: | Virtual and Physical Prototyping |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/17452759.2023.2230467 |
| _version_ | 1797678658432794624 |
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| author | A. Sola A. Trinchi |
| author_facet | A. Sola A. Trinchi |
| author_sort | A. Sola |
| collection | DOAJ |
| description | While the role of boron (B) has been thoroughly clarified in titanium (Ti) castings, the microstructural changes triggered in additive manufacturing (AM) are still the subject of debate in the literature. Many contributions have confirmed the B-induced microstructural refinement in Ti-based AM parts. The formation of TiB in titanium matrix composites (TMCs) may increase strength. In some cases, B may also promote the columnar-to-equiaxed transition, thus mitigating the anisotropic effects associated with the strong epitaxial growth of unidirectional columnar grains typical of AM. However, as critically discussed in this review, some pitfalls remain. Due to fast cooling, the microstructural evolution in AM may deviate from equilibrium, leading to a shift of the Ti-B eutectic point and to the formation of out-of-equilibrium phases. Additionally, the growth of TiB may undermine the ductility and the crack propagation resistance of AM parts, which calls for appropriate remediation strategies. |
| first_indexed | 2024-03-11T23:03:07Z |
| format | Article |
| id | doaj.art-f5c76b4d67e84a87b262dc7251cbee2d |
| institution | Directory Open Access Journal |
| issn | 1745-2759 1745-2767 |
| language | English |
| last_indexed | 2024-03-11T23:03:07Z |
| publishDate | 2023-08-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Virtual and Physical Prototyping |
| spelling | doaj.art-f5c76b4d67e84a87b262dc7251cbee2d2023-09-21T14:38:04ZengTaylor & Francis GroupVirtual and Physical Prototyping1745-27591745-27672023-08-010010.1080/17452759.2023.22304672230467Boron-induced microstructural manipulation of titanium and titanium alloys in additive manufacturingA. Sola0A. Trinchi1Commonwealth Scientific and Industrial Research Organisation (CSIRO)Commonwealth Scientific and Industrial Research Organisation (CSIRO)While the role of boron (B) has been thoroughly clarified in titanium (Ti) castings, the microstructural changes triggered in additive manufacturing (AM) are still the subject of debate in the literature. Many contributions have confirmed the B-induced microstructural refinement in Ti-based AM parts. The formation of TiB in titanium matrix composites (TMCs) may increase strength. In some cases, B may also promote the columnar-to-equiaxed transition, thus mitigating the anisotropic effects associated with the strong epitaxial growth of unidirectional columnar grains typical of AM. However, as critically discussed in this review, some pitfalls remain. Due to fast cooling, the microstructural evolution in AM may deviate from equilibrium, leading to a shift of the Ti-B eutectic point and to the formation of out-of-equilibrium phases. Additionally, the growth of TiB may undermine the ductility and the crack propagation resistance of AM parts, which calls for appropriate remediation strategies.http://dx.doi.org/10.1080/17452759.2023.2230467borontitaniumadditive manufacturinggrain refinementcolumnar growth |
| spellingShingle | A. Sola A. Trinchi Boron-induced microstructural manipulation of titanium and titanium alloys in additive manufacturing Virtual and Physical Prototyping boron titanium additive manufacturing grain refinement columnar growth |
| title | Boron-induced microstructural manipulation of titanium and titanium alloys in additive manufacturing |
| title_full | Boron-induced microstructural manipulation of titanium and titanium alloys in additive manufacturing |
| title_fullStr | Boron-induced microstructural manipulation of titanium and titanium alloys in additive manufacturing |
| title_full_unstemmed | Boron-induced microstructural manipulation of titanium and titanium alloys in additive manufacturing |
| title_short | Boron-induced microstructural manipulation of titanium and titanium alloys in additive manufacturing |
| title_sort | boron induced microstructural manipulation of titanium and titanium alloys in additive manufacturing |
| topic | boron titanium additive manufacturing grain refinement columnar growth |
| url | http://dx.doi.org/10.1080/17452759.2023.2230467 |
| work_keys_str_mv | AT asola boroninducedmicrostructuralmanipulationoftitaniumandtitaniumalloysinadditivemanufacturing AT atrinchi boroninducedmicrostructuralmanipulationoftitaniumandtitaniumalloysinadditivemanufacturing |