Ballistic impact response of a heat-treated dual-phase Ti–5.2Mo–4.8Al–2.5Zr–1.7Cr alloy with hierarchical microstructure
In the present study, a dual-phase Ti-5.2Mo-4.8Al-2.5Zr-1.7Cr alloy was hot-rolled at 980 °C with a thickness reduction of 65% and then heat-treated with the strategy of 920 °C/1 h/water quenching +550 °C/6 h/air cooling, and a hierarchical microstructure was prepared, which contained micro-scale eq...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-07-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S223878542301219X |
| _version_ | 1797745234111627264 |
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| author | Xinjie Zhu Guxin Zhou Lidong Zhang Duoduo Wang Feng Han Yanlin Pan Yujing Lang Qunbo Fan |
| author_facet | Xinjie Zhu Guxin Zhou Lidong Zhang Duoduo Wang Feng Han Yanlin Pan Yujing Lang Qunbo Fan |
| author_sort | Xinjie Zhu |
| collection | DOAJ |
| description | In the present study, a dual-phase Ti-5.2Mo-4.8Al-2.5Zr-1.7Cr alloy was hot-rolled at 980 °C with a thickness reduction of 65% and then heat-treated with the strategy of 920 °C/1 h/water quenching +550 °C/6 h/air cooling, and a hierarchical microstructure was prepared, which contained micro-scale equiaxed primary α phase (αp), sub-micro scale rod-like α phase (αr), nano-scale acicular secondary α phase (αs) and β matrix segmented by αs and αr. In addition, the dislocation densities of α phase and β phase were determined as 0.3652 × 1015/m2 and 2.2502 × 1015/m2, respectively. Contributing to αr and αs, the hierarchical microstructure exhibited higher strength (yield strength: 1228 MPa, ultimate tensile strength: 1389 MPa, dynamic compressive strength: 1661 ± 27 MPa). Simultaneously, αp and αr were helpful to the strain transfer, and thus the plasticity was maintained at a considerable level (elongation: 13.4 ± 0.2%, critical fracture strain: 18.9 ± 0.2%). Such hierarchical microstructure overcame the limitation of the strength-ductility trade-off to a certain extent and exhibited a superior combination of strength and ductility. The ballistic impact behavior of the titanium alloy plates with the thickness of 20.3 mm (1#), 19.3 mm (2#) and 18.4 mm (3#) against 7.62 mm armour piercing projectiles illustrated that as the titanium alloy thicknesses decreased from 20.3 mm to 18.4 mm, more ASB-induced cracks were formed near the rear face and connected to form catastrophic cracks in the 2# and the 3# titanium alloy plates, even resulting in the failure for the 3# titanium alloy plate. Ultimately, the 1# and 2# titanium alloy plates exhibited preferable ballistic impact properties. |
| first_indexed | 2024-03-12T15:20:28Z |
| format | Article |
| id | doaj.art-0655790afde9421dad24868d58e3d988 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-12T15:20:28Z |
| publishDate | 2023-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-0655790afde9421dad24868d58e3d9882023-08-11T05:33:04ZengElsevierJournal of Materials Research and Technology2238-78542023-07-0125200209Ballistic impact response of a heat-treated dual-phase Ti–5.2Mo–4.8Al–2.5Zr–1.7Cr alloy with hierarchical microstructureXinjie Zhu0Guxin Zhou1Lidong Zhang2Duoduo Wang3Feng Han4Yanlin Pan5Yujing Lang6Qunbo Fan7Chinese Weapons Science Academy Ningbo Branch, Ningbo, 315103, China; Corresponding author.Chinese Weapons Science Academy Ningbo Branch, Ningbo, 315103, ChinaHarbin First Machinery Group Corporation, Harbin, 150050, ChinaInstitute of Technology, Beijing North Vehicle Group Corporation, Beijing 100072, ChinaChinese Weapons Science Academy Ningbo Branch, Ningbo, 315103, ChinaChinese Weapons Science Academy Ningbo Branch, Ningbo, 315103, ChinaChinese Weapons Science Academy Ningbo Branch, Ningbo, 315103, ChinaNational Key Laboratory of Science and Technology on Materials Under Shock and Impact, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, ChinaIn the present study, a dual-phase Ti-5.2Mo-4.8Al-2.5Zr-1.7Cr alloy was hot-rolled at 980 °C with a thickness reduction of 65% and then heat-treated with the strategy of 920 °C/1 h/water quenching +550 °C/6 h/air cooling, and a hierarchical microstructure was prepared, which contained micro-scale equiaxed primary α phase (αp), sub-micro scale rod-like α phase (αr), nano-scale acicular secondary α phase (αs) and β matrix segmented by αs and αr. In addition, the dislocation densities of α phase and β phase were determined as 0.3652 × 1015/m2 and 2.2502 × 1015/m2, respectively. Contributing to αr and αs, the hierarchical microstructure exhibited higher strength (yield strength: 1228 MPa, ultimate tensile strength: 1389 MPa, dynamic compressive strength: 1661 ± 27 MPa). Simultaneously, αp and αr were helpful to the strain transfer, and thus the plasticity was maintained at a considerable level (elongation: 13.4 ± 0.2%, critical fracture strain: 18.9 ± 0.2%). Such hierarchical microstructure overcame the limitation of the strength-ductility trade-off to a certain extent and exhibited a superior combination of strength and ductility. The ballistic impact behavior of the titanium alloy plates with the thickness of 20.3 mm (1#), 19.3 mm (2#) and 18.4 mm (3#) against 7.62 mm armour piercing projectiles illustrated that as the titanium alloy thicknesses decreased from 20.3 mm to 18.4 mm, more ASB-induced cracks were formed near the rear face and connected to form catastrophic cracks in the 2# and the 3# titanium alloy plates, even resulting in the failure for the 3# titanium alloy plate. Ultimately, the 1# and 2# titanium alloy plates exhibited preferable ballistic impact properties.http://www.sciencedirect.com/science/article/pii/S223878542301219XHierarchical microstructureDual-phase titanium alloyMechanical propertiesBallistic impact response |
| spellingShingle | Xinjie Zhu Guxin Zhou Lidong Zhang Duoduo Wang Feng Han Yanlin Pan Yujing Lang Qunbo Fan Ballistic impact response of a heat-treated dual-phase Ti–5.2Mo–4.8Al–2.5Zr–1.7Cr alloy with hierarchical microstructure Journal of Materials Research and Technology Hierarchical microstructure Dual-phase titanium alloy Mechanical properties Ballistic impact response |
| title | Ballistic impact response of a heat-treated dual-phase Ti–5.2Mo–4.8Al–2.5Zr–1.7Cr alloy with hierarchical microstructure |
| title_full | Ballistic impact response of a heat-treated dual-phase Ti–5.2Mo–4.8Al–2.5Zr–1.7Cr alloy with hierarchical microstructure |
| title_fullStr | Ballistic impact response of a heat-treated dual-phase Ti–5.2Mo–4.8Al–2.5Zr–1.7Cr alloy with hierarchical microstructure |
| title_full_unstemmed | Ballistic impact response of a heat-treated dual-phase Ti–5.2Mo–4.8Al–2.5Zr–1.7Cr alloy with hierarchical microstructure |
| title_short | Ballistic impact response of a heat-treated dual-phase Ti–5.2Mo–4.8Al–2.5Zr–1.7Cr alloy with hierarchical microstructure |
| title_sort | ballistic impact response of a heat treated dual phase ti 5 2mo 4 8al 2 5zr 1 7cr alloy with hierarchical microstructure |
| topic | Hierarchical microstructure Dual-phase titanium alloy Mechanical properties Ballistic impact response |
| url | http://www.sciencedirect.com/science/article/pii/S223878542301219X |
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