The Strength of Ti-6AL-4V Investigated Using Micro-Pillars
Focused Ion Beam (FIB) has been used to create single α-β colony micro-pillars from a polycrystalline commercial Ti-6Al-4V (Ti-64) sample. Each pillar was selected to have either a single alpha phase, a single beta phase, or two α lamella separated by a thin β phase filet. Then, utilizing a diamond...
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MDPI AG
2025-02-01
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| author | Rayan B. M. Ameen Dilveen W. Mohammed Yu-Lung Chiu Ian P. Jones |
| author_facet | Rayan B. M. Ameen Dilveen W. Mohammed Yu-Lung Chiu Ian P. Jones |
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| description | Focused Ion Beam (FIB) has been used to create single α-β colony micro-pillars from a polycrystalline commercial Ti-6Al-4V (Ti-64) sample. Each pillar was selected to have either a single alpha phase, a single beta phase, or two α lamella separated by a thin β phase filet. Then, utilizing a diamond flat tip as a compression platen, uniaxial micro-compression tests were performed on the single crystal α and β pillars as well as a tri-crystal α/β/α pillar using a nano-indenter. Then, utilizing a diamond flat tip as a compression platen, uniaxial micro-compression tests were performed on the single crystal alpha and beta pillars as well as a tri-crystal α/β/α pillar using a nano-indenter. Through the use of Electron Back Scattering Diffraction (EBSD) to choose the crystal orientation along the micro-pillar, three distinct unique slip systems have been selectively triggered by maximizing the Schmid factor for each system. The potential to localize a single crystal volume that can be characterized after deformation is one benefit of the micro-compression approach over traditional mechanical testing. The sample strengths compare well with published data. The mechanical properties of the α-β colonies and the single α and β phases have been compared in order to elucidate the role of the α/β interfaces in determining the critical resolved shear stress. |
| format | Article |
| id | doaj-art-33b6965acbbc40e9b6ffbfccd8270bc2 |
| institution | Kabale University |
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| language | English |
| publishDate | 2025-02-01 |
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| spelling | doaj-art-33b6965acbbc40e9b6ffbfccd8270bc22025-08-20T03:43:22ZengMDPI AGMicromachines2072-666X2025-02-0116329310.3390/mi16030293The Strength of Ti-6AL-4V Investigated Using Micro-PillarsRayan B. M. Ameen0Dilveen W. Mohammed1Yu-Lung Chiu2Ian P. Jones3Physics Department, College of Science, The University of Duhok, Duhok 42001, Kurdistan Region, IraqPhysics Department, College of Science, The University of Duhok, Duhok 42001, Kurdistan Region, IraqSchool of Metallurgy and Materials, The University of Birmingham, Birmingham B15 2TT, UKSchool of Metallurgy and Materials, The University of Birmingham, Birmingham B15 2TT, UKFocused Ion Beam (FIB) has been used to create single α-β colony micro-pillars from a polycrystalline commercial Ti-6Al-4V (Ti-64) sample. Each pillar was selected to have either a single alpha phase, a single beta phase, or two α lamella separated by a thin β phase filet. Then, utilizing a diamond flat tip as a compression platen, uniaxial micro-compression tests were performed on the single crystal α and β pillars as well as a tri-crystal α/β/α pillar using a nano-indenter. Then, utilizing a diamond flat tip as a compression platen, uniaxial micro-compression tests were performed on the single crystal alpha and beta pillars as well as a tri-crystal α/β/α pillar using a nano-indenter. Through the use of Electron Back Scattering Diffraction (EBSD) to choose the crystal orientation along the micro-pillar, three distinct unique slip systems have been selectively triggered by maximizing the Schmid factor for each system. The potential to localize a single crystal volume that can be characterized after deformation is one benefit of the micro-compression approach over traditional mechanical testing. The sample strengths compare well with published data. The mechanical properties of the α-β colonies and the single α and β phases have been compared in order to elucidate the role of the α/β interfaces in determining the critical resolved shear stress.https://www.mdpi.com/2072-666X/16/3/293strength for α/β-Ti alloymicro-mechanical testnano-indentationplastic flow |
| spellingShingle | Rayan B. M. Ameen Dilveen W. Mohammed Yu-Lung Chiu Ian P. Jones The Strength of Ti-6AL-4V Investigated Using Micro-Pillars Micromachines strength for α/β-Ti alloy micro-mechanical test nano-indentation plastic flow |
| title | The Strength of Ti-6AL-4V Investigated Using Micro-Pillars |
| title_full | The Strength of Ti-6AL-4V Investigated Using Micro-Pillars |
| title_fullStr | The Strength of Ti-6AL-4V Investigated Using Micro-Pillars |
| title_full_unstemmed | The Strength of Ti-6AL-4V Investigated Using Micro-Pillars |
| title_short | The Strength of Ti-6AL-4V Investigated Using Micro-Pillars |
| title_sort | strength of ti 6al 4v investigated using micro pillars |
| topic | strength for α/β-Ti alloy micro-mechanical test nano-indentation plastic flow |
| url | https://www.mdpi.com/2072-666X/16/3/293 |
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