Strength and Fatigue Life at 625 K of the Ultrafine-Grained Ti-6Al-4V Alloy Produced by Equal-Channel Angular Pressing
Grain reduction in a widely used Ti-6Al-4V alloy increases its endurance limit at room temperature. In this work, the behavior of the ultrafine-grained alloy under cyclic load at the temperature of 625 K is considered. Research was conducted to examine the fatigue life in a low-cycle area of the ult...
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MDPI AG
2022-08-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/12/8/1345 |
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| author | Irina P. Semenova Alexander V. Polyakov Mikhail V. Pesin Andrey G. Stotskiy Yulia M. Modina Ruslan Z. Valiev Terence G. Langdon |
| author_facet | Irina P. Semenova Alexander V. Polyakov Mikhail V. Pesin Andrey G. Stotskiy Yulia M. Modina Ruslan Z. Valiev Terence G. Langdon |
| author_sort | Irina P. Semenova |
| collection | DOAJ |
| description | Grain reduction in a widely used Ti-6Al-4V alloy increases its endurance limit at room temperature. In this work, the behavior of the ultrafine-grained alloy under cyclic load at the temperature of 625 K is considered. Research was conducted to examine the fatigue life in a low-cycle area of the ultrafine-grained Ti-6Al-4V alloy produced by equal-channel angular pressing. Tensile and fatigue testing of the Ti-6Al-4V samples with coarse-grained (CG) and ultrafine-grained (UFG) structures were carried out at 293 and 625 K. The alloy demonstrated an enhanced strength and fatigue life at both temperatures. The representative features of the microstructural evolution and the fracture features in the UFG and CG alloys after fatigue tests are described in detail. The prospects for the use of the UFG Ti-6Al-4V alloy for engineering applications, such as in the production of critical gas-turbine engine parts, is discussed. |
| first_indexed | 2024-03-09T12:56:38Z |
| format | Article |
| id | doaj.art-2461022feeec40e5b8c08ba529066433 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-09T12:56:38Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-2461022feeec40e5b8c08ba5290664332023-11-30T21:59:22ZengMDPI AGMetals2075-47012022-08-01128134510.3390/met12081345Strength and Fatigue Life at 625 K of the Ultrafine-Grained Ti-6Al-4V Alloy Produced by Equal-Channel Angular PressingIrina P. Semenova0Alexander V. Polyakov1Mikhail V. Pesin2Andrey G. Stotskiy3Yulia M. Modina4Ruslan Z. Valiev5Terence G. Langdon6Laboratory of Multifunctional Materials, Bashkir State University, St. Zaki Validi, 32, 450008 Ufa, RussiaLaboratory of Multifunctional Materials, Bashkir State University, St. Zaki Validi, 32, 450008 Ufa, RussiaDepartment of Mechanical Engineering Innovative Technologies, Perm National Research Polytechnic University, 29 Komsomolsky Pr., 614990 Perm, RussiaLaboratory of Multifunctional Materials, Bashkir State University, St. Zaki Validi, 32, 450008 Ufa, RussiaLaboratory of Multifunctional Materials, Bashkir State University, St. Zaki Validi, 32, 450008 Ufa, RussiaInstitute of Physics of Advanced Materials, Ufa State Aviation Technical University, 12 K. Marx St., 450008 Ufa, RussiaMaterials Research Group, Department of Mechanical Engineering, University of Southampton, Southampton SO17 1BJ, UKGrain reduction in a widely used Ti-6Al-4V alloy increases its endurance limit at room temperature. In this work, the behavior of the ultrafine-grained alloy under cyclic load at the temperature of 625 K is considered. Research was conducted to examine the fatigue life in a low-cycle area of the ultrafine-grained Ti-6Al-4V alloy produced by equal-channel angular pressing. Tensile and fatigue testing of the Ti-6Al-4V samples with coarse-grained (CG) and ultrafine-grained (UFG) structures were carried out at 293 and 625 K. The alloy demonstrated an enhanced strength and fatigue life at both temperatures. The representative features of the microstructural evolution and the fracture features in the UFG and CG alloys after fatigue tests are described in detail. The prospects for the use of the UFG Ti-6Al-4V alloy for engineering applications, such as in the production of critical gas-turbine engine parts, is discussed.https://www.mdpi.com/2075-4701/12/8/1345Ti-6Al-4V alloyultrafine-grained structureelevated temperaturesstrengthfatiguedurability |
| spellingShingle | Irina P. Semenova Alexander V. Polyakov Mikhail V. Pesin Andrey G. Stotskiy Yulia M. Modina Ruslan Z. Valiev Terence G. Langdon Strength and Fatigue Life at 625 K of the Ultrafine-Grained Ti-6Al-4V Alloy Produced by Equal-Channel Angular Pressing Metals Ti-6Al-4V alloy ultrafine-grained structure elevated temperatures strength fatigue durability |
| title | Strength and Fatigue Life at 625 K of the Ultrafine-Grained Ti-6Al-4V Alloy Produced by Equal-Channel Angular Pressing |
| title_full | Strength and Fatigue Life at 625 K of the Ultrafine-Grained Ti-6Al-4V Alloy Produced by Equal-Channel Angular Pressing |
| title_fullStr | Strength and Fatigue Life at 625 K of the Ultrafine-Grained Ti-6Al-4V Alloy Produced by Equal-Channel Angular Pressing |
| title_full_unstemmed | Strength and Fatigue Life at 625 K of the Ultrafine-Grained Ti-6Al-4V Alloy Produced by Equal-Channel Angular Pressing |
| title_short | Strength and Fatigue Life at 625 K of the Ultrafine-Grained Ti-6Al-4V Alloy Produced by Equal-Channel Angular Pressing |
| title_sort | strength and fatigue life at 625 k of the ultrafine grained ti 6al 4v alloy produced by equal channel angular pressing |
| topic | Ti-6Al-4V alloy ultrafine-grained structure elevated temperatures strength fatigue durability |
| url | https://www.mdpi.com/2075-4701/12/8/1345 |
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