Deformation-free geometric recrystallisation in a metastable β-Ti alloy produced by selective laser melting
Super-transus heat treatments conducted on an additively manufactured body-centred-cubic β-Ti alloy led to the formation of equiaxed β grains from an initially columnar structure. The grain structure was transformed thanks to a combination of Plateau-Rayleigh instability and grain growth driven by r...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2020-03-01
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| Series: | Materials Research Letters |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/21663831.2020.1713244 |
| _version_ | 1811289812090486784 |
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| author | Ahmad Zafari Edward W. Lui Kenong Xia |
| author_facet | Ahmad Zafari Edward W. Lui Kenong Xia |
| author_sort | Ahmad Zafari |
| collection | DOAJ |
| description | Super-transus heat treatments conducted on an additively manufactured body-centred-cubic β-Ti alloy led to the formation of equiaxed β grains from an initially columnar structure. The grain structure was transformed thanks to a combination of Plateau-Rayleigh instability and grain growth driven by reduction in grain boundary surface area. This is a new type of geometric recrystallisation with no deformation involved. Other mechanisms proposed based on either deformation-induced recrystallisation or martensitic decomposition are dismissed owing to low dislocation density and absence of martensitic transformation in the alloy studied. |
| first_indexed | 2024-04-13T04:02:07Z |
| format | Article |
| id | doaj.art-60e8b111315048ac83fa75f758e9adc0 |
| institution | Directory Open Access Journal |
| issn | 2166-3831 |
| language | English |
| last_indexed | 2024-04-13T04:02:07Z |
| publishDate | 2020-03-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Materials Research Letters |
| spelling | doaj.art-60e8b111315048ac83fa75f758e9adc02022-12-22T03:03:27ZengTaylor & Francis GroupMaterials Research Letters2166-38312020-03-018311712210.1080/21663831.2020.17132441713244Deformation-free geometric recrystallisation in a metastable β-Ti alloy produced by selective laser meltingAhmad Zafari0Edward W. Lui1Kenong Xia2University of MelbourneUniversity of MelbourneUniversity of MelbourneSuper-transus heat treatments conducted on an additively manufactured body-centred-cubic β-Ti alloy led to the formation of equiaxed β grains from an initially columnar structure. The grain structure was transformed thanks to a combination of Plateau-Rayleigh instability and grain growth driven by reduction in grain boundary surface area. This is a new type of geometric recrystallisation with no deformation involved. Other mechanisms proposed based on either deformation-induced recrystallisation or martensitic decomposition are dismissed owing to low dislocation density and absence of martensitic transformation in the alloy studied.http://dx.doi.org/10.1080/21663831.2020.1713244titanium alloysequiaxed microstructuregrain growthrecrystallisationselective laser melting |
| spellingShingle | Ahmad Zafari Edward W. Lui Kenong Xia Deformation-free geometric recrystallisation in a metastable β-Ti alloy produced by selective laser melting Materials Research Letters titanium alloys equiaxed microstructure grain growth recrystallisation selective laser melting |
| title | Deformation-free geometric recrystallisation in a metastable β-Ti alloy produced by selective laser melting |
| title_full | Deformation-free geometric recrystallisation in a metastable β-Ti alloy produced by selective laser melting |
| title_fullStr | Deformation-free geometric recrystallisation in a metastable β-Ti alloy produced by selective laser melting |
| title_full_unstemmed | Deformation-free geometric recrystallisation in a metastable β-Ti alloy produced by selective laser melting |
| title_short | Deformation-free geometric recrystallisation in a metastable β-Ti alloy produced by selective laser melting |
| title_sort | deformation free geometric recrystallisation in a metastable β ti alloy produced by selective laser melting |
| topic | titanium alloys equiaxed microstructure grain growth recrystallisation selective laser melting |
| url | http://dx.doi.org/10.1080/21663831.2020.1713244 |
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