Compressive creep damage of Ti–6Al–4V ELI alloy with bimodal structure at room temperature
The compressive creep performance of Ti alloy is critical for the application of submersibles due to the pressure hull of deep-diving equipment mainly subjected to the seawater pressure during its service. The compressive creep behaviors and the corresponding deformation mechanism of Ti–6Al–4V ELI a...
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Elsevier
2024-11-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424024244 |
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| author | S.C. Yan Y.K. Wu L. Shang J.Q. Ren Y.M. Zhang C. Xin Q. Wang T.T. Ai |
| author_facet | S.C. Yan Y.K. Wu L. Shang J.Q. Ren Y.M. Zhang C. Xin Q. Wang T.T. Ai |
| author_sort | S.C. Yan |
| collection | DOAJ |
| description | The compressive creep performance of Ti alloy is critical for the application of submersibles due to the pressure hull of deep-diving equipment mainly subjected to the seawater pressure during its service. The compressive creep behaviors and the corresponding deformation mechanism of Ti–6Al–4V ELI alloy under different applied stress amplitudes were investigated. It was found that the stress threshold for Ti–6Al–4V ELI alloy produced significant compressive creep damage was 0.8 times yield strength (Rp0.2), and the primary mechanism was {101‾0}⟨112‾0⟩ prismatic slip. Specifically, a large number of prismatic slips were preferentially activated in the αp grains with a relative high Schmid factor when the applied stress amplitude was greater than 0.8Rp0.2. As the applied stress amplitude increases, the prismatic slips were also activated in the αlath. Meanwhile, the Burgers relationship between αlath and βlamellae gradually destroyed due to the dislocation pile-up at the αlath/βlamellae interface. This investigation provides data support for the compressive creep performance evaluation of Ti–6Al–4V ELI pressure hull. |
| format | Article |
| id | doaj-art-d2cf9236a4a349aa86e4179dbb0e072c |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-d2cf9236a4a349aa86e4179dbb0e072c2024-12-26T08:54:48ZengElsevierJournal of Materials Research and Technology2238-78542024-11-013348994907Compressive creep damage of Ti–6Al–4V ELI alloy with bimodal structure at room temperatureS.C. Yan0Y.K. Wu1L. Shang2J.Q. Ren3Y.M. Zhang4C. Xin5Q. Wang6T.T. Ai7School of Energy Engineering, Huanghuai University, Zhumadian, 463000, ChinaNational Key Laboratory of Marine Corrosion and Protection, Qingdao, 266000, China; Luoyang Ship Material Research Institute, Luoyang, 471003, China; Corresponding author. National Key Laboratory of Marine Corrosion and Protection, Qingdao, 266000, China.School of Energy Engineering, Huanghuai University, Zhumadian, 463000, ChinaState Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Department of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, 730050, China; Corresponding author.Northwest Institute for Non-ferrous Metal Research, Xi'an, 710049, ChinaNorthwest Institute for Non-ferrous Metal Research, Xi'an, 710049, ChinaSchool of Energy Engineering, Huanghuai University, Zhumadian, 463000, ChinaSchool of Materials Science and Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi, 723001, China; Corresponding author.The compressive creep performance of Ti alloy is critical for the application of submersibles due to the pressure hull of deep-diving equipment mainly subjected to the seawater pressure during its service. The compressive creep behaviors and the corresponding deformation mechanism of Ti–6Al–4V ELI alloy under different applied stress amplitudes were investigated. It was found that the stress threshold for Ti–6Al–4V ELI alloy produced significant compressive creep damage was 0.8 times yield strength (Rp0.2), and the primary mechanism was {101‾0}⟨112‾0⟩ prismatic slip. Specifically, a large number of prismatic slips were preferentially activated in the αp grains with a relative high Schmid factor when the applied stress amplitude was greater than 0.8Rp0.2. As the applied stress amplitude increases, the prismatic slips were also activated in the αlath. Meanwhile, the Burgers relationship between αlath and βlamellae gradually destroyed due to the dislocation pile-up at the αlath/βlamellae interface. This investigation provides data support for the compressive creep performance evaluation of Ti–6Al–4V ELI pressure hull.http://www.sciencedirect.com/science/article/pii/S2238785424024244Compressive creepTi–6Al–4V ELIBimodal structurePrismatic slipDeformation damage |
| spellingShingle | S.C. Yan Y.K. Wu L. Shang J.Q. Ren Y.M. Zhang C. Xin Q. Wang T.T. Ai Compressive creep damage of Ti–6Al–4V ELI alloy with bimodal structure at room temperature Journal of Materials Research and Technology Compressive creep Ti–6Al–4V ELI Bimodal structure Prismatic slip Deformation damage |
| title | Compressive creep damage of Ti–6Al–4V ELI alloy with bimodal structure at room temperature |
| title_full | Compressive creep damage of Ti–6Al–4V ELI alloy with bimodal structure at room temperature |
| title_fullStr | Compressive creep damage of Ti–6Al–4V ELI alloy with bimodal structure at room temperature |
| title_full_unstemmed | Compressive creep damage of Ti–6Al–4V ELI alloy with bimodal structure at room temperature |
| title_short | Compressive creep damage of Ti–6Al–4V ELI alloy with bimodal structure at room temperature |
| title_sort | compressive creep damage of ti 6al 4v eli alloy with bimodal structure at room temperature |
| topic | Compressive creep Ti–6Al–4V ELI Bimodal structure Prismatic slip Deformation damage |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424024244 |
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