Quantifying the effect of oxygen on micro-mechanical properties of a near-alpha titanium alloy
Titanium alloys are widely used in the aerospace industry, yet oxygen ingress can severely degrade the mechanical properties of titanium alloy components. Atom probe tomography (APT), electron probe microanalysis (EPMA) and nanoindentation were used to characterise the oxygen-rich layer on an in-ser...
| Main Authors: | , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
Springer
2021
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| _version_ | 1797105979078213632 |
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| author | Gardner, HM Gopon, P Magazzeni, CM Radecka, A Fox, K Rugg, D Wade, J Armstrong, DEJ Moody, MP Bagot, PAJ |
| author_facet | Gardner, HM Gopon, P Magazzeni, CM Radecka, A Fox, K Rugg, D Wade, J Armstrong, DEJ Moody, MP Bagot, PAJ |
| author_sort | Gardner, HM |
| collection | OXFORD |
| description | Titanium alloys are widely used in the aerospace industry, yet oxygen ingress can severely degrade the mechanical properties of titanium alloy components. Atom probe tomography (APT), electron probe microanalysis (EPMA) and nanoindentation were used to characterise the oxygen-rich layer on an in-service jet engine compressor disc, manufactured from the titanium alloy TIMETAL 834. Oxygen ingress was quantified and related to changes in mechanical properties through nanoindentation studies. The relationship between oxygen concentration, microstructure, crystal orientation and hardness has been explored through correlative hardness mapping, EPMA and electron backscatter diffraction (EBSD). It has been found that the hardening effects of microstructure and crystallography are only significant at very low-oxygen concentrations, whereas interstitial solid solution hardening dominates by order of magnitude for higher oxygen concentrations. The role of microstructure on oxygen ingress has been studied and oxygen ingress along a potential α/β interface was directly observed on the nanoscale using APT. |
| first_indexed | 2024-03-07T06:55:08Z |
| format | Journal article |
| id | oxford-uuid:fde4a064-bef3-4faf-a72b-2dc0bfc024e3 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T06:55:08Z |
| publishDate | 2021 |
| publisher | Springer |
| record_format | dspace |
| spelling | oxford-uuid:fde4a064-bef3-4faf-a72b-2dc0bfc024e32022-03-27T13:32:09ZQuantifying the effect of oxygen on micro-mechanical properties of a near-alpha titanium alloyJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:fde4a064-bef3-4faf-a72b-2dc0bfc024e3EnglishSymplectic ElementsSpringer2021Gardner, HMGopon, PMagazzeni, CMRadecka, AFox, KRugg, DWade, JArmstrong, DEJMoody, MPBagot, PAJTitanium alloys are widely used in the aerospace industry, yet oxygen ingress can severely degrade the mechanical properties of titanium alloy components. Atom probe tomography (APT), electron probe microanalysis (EPMA) and nanoindentation were used to characterise the oxygen-rich layer on an in-service jet engine compressor disc, manufactured from the titanium alloy TIMETAL 834. Oxygen ingress was quantified and related to changes in mechanical properties through nanoindentation studies. The relationship between oxygen concentration, microstructure, crystal orientation and hardness has been explored through correlative hardness mapping, EPMA and electron backscatter diffraction (EBSD). It has been found that the hardening effects of microstructure and crystallography are only significant at very low-oxygen concentrations, whereas interstitial solid solution hardening dominates by order of magnitude for higher oxygen concentrations. The role of microstructure on oxygen ingress has been studied and oxygen ingress along a potential α/β interface was directly observed on the nanoscale using APT. |
| spellingShingle | Gardner, HM Gopon, P Magazzeni, CM Radecka, A Fox, K Rugg, D Wade, J Armstrong, DEJ Moody, MP Bagot, PAJ Quantifying the effect of oxygen on micro-mechanical properties of a near-alpha titanium alloy |
| title | Quantifying the effect of oxygen on micro-mechanical properties of a near-alpha titanium alloy |
| title_full | Quantifying the effect of oxygen on micro-mechanical properties of a near-alpha titanium alloy |
| title_fullStr | Quantifying the effect of oxygen on micro-mechanical properties of a near-alpha titanium alloy |
| title_full_unstemmed | Quantifying the effect of oxygen on micro-mechanical properties of a near-alpha titanium alloy |
| title_short | Quantifying the effect of oxygen on micro-mechanical properties of a near-alpha titanium alloy |
| title_sort | quantifying the effect of oxygen on micro mechanical properties of a near alpha titanium alloy |
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