Alloys-by-design: Application to titanium alloys for optimal superplasticity
An alloy design approach for titanium alloys is presented. New alloys are isolated, manufactured and tested with an emphasis on the superplastic response. The superplastic effect is found to be optimal between 650 to 750∘C at strain rates between 8.3×10−2 and 8.3×10−3/s – this is a substantial impro...
| Main Authors: | , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
Elsevier
2019
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| _version_ | 1797112293807357952 |
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| author | Alabort, E Barba, D Shagiev, MR Murzinova, MA Galeyev, RM Valiakhmetov, OR Aletdinov, AF Reed, RC |
| author_facet | Alabort, E Barba, D Shagiev, MR Murzinova, MA Galeyev, RM Valiakhmetov, OR Aletdinov, AF Reed, RC |
| author_sort | Alabort, E |
| collection | OXFORD |
| description | An alloy design approach for titanium alloys is presented. New alloys are isolated, manufactured and tested with an emphasis on the superplastic response. The superplastic effect is found to be optimal between 650 to 750∘C at strain rates between 8.3×10−2 and 8.3×10−3/s – this is a substantial improvement in terms of temperature and deformation rates over traditional titanium alloys such as Ti–6Al–4V. Elongations approaching ∼2000% are demonstrated. Electron backscatter diffraction studies confirm a randomisation of texture and absence of significant intragranular dislocation density, confirming superplasticity and thus grain-boundary sliding as the overarching deformation mechanism. At strain rates faster than 0.01/s, the alloys exhibit large elongations (∼200–500%) but softening is evident and lower ductility results. Our results reveal that the physical factors controlling the alloy composition/property/manufacturing interrelationship are understood and quantified. Physically-based constitutive equations are presented and used to demonstrate the practical advantages of the designed alloys. |
| first_indexed | 2024-03-07T08:22:09Z |
| format | Journal article |
| id | oxford-uuid:c31ca0ed-b603-4149-84c2-8c2f8f8800cd |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T08:22:09Z |
| publishDate | 2019 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:c31ca0ed-b603-4149-84c2-8c2f8f8800cd2024-02-01T14:50:55ZAlloys-by-design: Application to titanium alloys for optimal superplasticityJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:c31ca0ed-b603-4149-84c2-8c2f8f8800cdEnglishSymplectic ElementsElsevier2019Alabort, EBarba, DShagiev, MRMurzinova, MAGaleyev, RMValiakhmetov, ORAletdinov, AFReed, RCAn alloy design approach for titanium alloys is presented. New alloys are isolated, manufactured and tested with an emphasis on the superplastic response. The superplastic effect is found to be optimal between 650 to 750∘C at strain rates between 8.3×10−2 and 8.3×10−3/s – this is a substantial improvement in terms of temperature and deformation rates over traditional titanium alloys such as Ti–6Al–4V. Elongations approaching ∼2000% are demonstrated. Electron backscatter diffraction studies confirm a randomisation of texture and absence of significant intragranular dislocation density, confirming superplasticity and thus grain-boundary sliding as the overarching deformation mechanism. At strain rates faster than 0.01/s, the alloys exhibit large elongations (∼200–500%) but softening is evident and lower ductility results. Our results reveal that the physical factors controlling the alloy composition/property/manufacturing interrelationship are understood and quantified. Physically-based constitutive equations are presented and used to demonstrate the practical advantages of the designed alloys. |
| spellingShingle | Alabort, E Barba, D Shagiev, MR Murzinova, MA Galeyev, RM Valiakhmetov, OR Aletdinov, AF Reed, RC Alloys-by-design: Application to titanium alloys for optimal superplasticity |
| title | Alloys-by-design: Application to titanium alloys for optimal superplasticity |
| title_full | Alloys-by-design: Application to titanium alloys for optimal superplasticity |
| title_fullStr | Alloys-by-design: Application to titanium alloys for optimal superplasticity |
| title_full_unstemmed | Alloys-by-design: Application to titanium alloys for optimal superplasticity |
| title_short | Alloys-by-design: Application to titanium alloys for optimal superplasticity |
| title_sort | alloys by design application to titanium alloys for optimal superplasticity |
| work_keys_str_mv | AT alaborte alloysbydesignapplicationtotitaniumalloysforoptimalsuperplasticity AT barbad alloysbydesignapplicationtotitaniumalloysforoptimalsuperplasticity AT shagievmr alloysbydesignapplicationtotitaniumalloysforoptimalsuperplasticity AT murzinovama alloysbydesignapplicationtotitaniumalloysforoptimalsuperplasticity AT galeyevrm alloysbydesignapplicationtotitaniumalloysforoptimalsuperplasticity AT valiakhmetovor alloysbydesignapplicationtotitaniumalloysforoptimalsuperplasticity AT aletdinovaf alloysbydesignapplicationtotitaniumalloysforoptimalsuperplasticity AT reedrc alloysbydesignapplicationtotitaniumalloysforoptimalsuperplasticity |