Enhanced strength-ductility synergy in Ti-4Al-5Mo-5V-5Cr-1Nb with hierarchical microstructure
In general, metastable β-Ti-alloys exhibit low ductility at room temperature, which restricts its workability and critical applications. Here, we report a hierarchical microstructure tailoring strategy to achieve an excellent strength-ductility combination in Ti-4Al-5Mo-5V-5Cr-1Nb (Ti-45551) alloy....
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-12-01
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| Series: | Materials Letters: X |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590150822000485 |
| _version_ | 1811204315880095744 |
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| author | T. Wang F. Yong X.H. Liu K.X. Wang Y.X. Du F. Zhao |
| author_facet | T. Wang F. Yong X.H. Liu K.X. Wang Y.X. Du F. Zhao |
| author_sort | T. Wang |
| collection | DOAJ |
| description | In general, metastable β-Ti-alloys exhibit low ductility at room temperature, which restricts its workability and critical applications. Here, we report a hierarchical microstructure tailoring strategy to achieve an excellent strength-ductility combination in Ti-4Al-5Mo-5V-5Cr-1Nb (Ti-45551) alloy. It was revealed that high density deformation twinning can be successfully introduced in primary α particles of Ti-45551 alloy through warm dynamic plastic deformation (DPD). After warm DPD process, the hierarchical microstructure was constructed in Ti-45551 alloy, including equiaxed primary α particles with high density deformation twins, β-phase matrix and finely dispersed nanoscale secondary α lamellas. Uniaxial tensile experiments have revealed that Ti-45551 alloy exhibited enhanced strength-ductility synergy with hierarchical microstructure at room temperature. This excellent combination of strength and ductility is derived from high twin density in in primary α particles and unique hierarchical microstructure. Also, this study demonstrates a feasible and low-cost route to design high performance Ti alloy. |
| first_indexed | 2024-04-12T03:10:53Z |
| format | Article |
| id | doaj.art-80541768961f41a4b4433385379268f6 |
| institution | Directory Open Access Journal |
| issn | 2590-1508 |
| language | English |
| last_indexed | 2024-04-12T03:10:53Z |
| publishDate | 2022-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials Letters: X |
| spelling | doaj.art-80541768961f41a4b4433385379268f62022-12-22T03:50:20ZengElsevierMaterials Letters: X2590-15082022-12-0116100168Enhanced strength-ductility synergy in Ti-4Al-5Mo-5V-5Cr-1Nb with hierarchical microstructureT. Wang0F. Yong1X.H. Liu2K.X. Wang3Y.X. Du4F. Zhao5State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China; Western Superconducting Technologies Co., Ltd., Shaanxi Province Engineering Laboratory for Aerial Material, Xi’an 710018, ChinaState Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China; Western Superconducting Technologies Co., Ltd., Shaanxi Province Engineering Laboratory for Aerial Material, Xi’an 710018, China; Corresponding authors at: Institute for Advanced study, Chengdu University, Chengdu 610106, China.State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China; Western Superconducting Technologies Co., Ltd., Shaanxi Province Engineering Laboratory for Aerial Material, Xi’an 710018, ChinaWestern Superconducting Technologies Co., Ltd., Shaanxi Province Engineering Laboratory for Aerial Material, Xi’an 710018, ChinaWestern Superconducting Technologies Co., Ltd., Shaanxi Province Engineering Laboratory for Aerial Material, Xi’an 710018, ChinaInstitute for Advanced Study, Chengdu University, Chengdu 610106, China; Corresponding authors at: Institute for Advanced study, Chengdu University, Chengdu 610106, China.In general, metastable β-Ti-alloys exhibit low ductility at room temperature, which restricts its workability and critical applications. Here, we report a hierarchical microstructure tailoring strategy to achieve an excellent strength-ductility combination in Ti-4Al-5Mo-5V-5Cr-1Nb (Ti-45551) alloy. It was revealed that high density deformation twinning can be successfully introduced in primary α particles of Ti-45551 alloy through warm dynamic plastic deformation (DPD). After warm DPD process, the hierarchical microstructure was constructed in Ti-45551 alloy, including equiaxed primary α particles with high density deformation twins, β-phase matrix and finely dispersed nanoscale secondary α lamellas. Uniaxial tensile experiments have revealed that Ti-45551 alloy exhibited enhanced strength-ductility synergy with hierarchical microstructure at room temperature. This excellent combination of strength and ductility is derived from high twin density in in primary α particles and unique hierarchical microstructure. Also, this study demonstrates a feasible and low-cost route to design high performance Ti alloy.http://www.sciencedirect.com/science/article/pii/S2590150822000485Deformation and fractureElectron microscopyGradient microstructureDeformation twinningStrength-ductility synergy |
| spellingShingle | T. Wang F. Yong X.H. Liu K.X. Wang Y.X. Du F. Zhao Enhanced strength-ductility synergy in Ti-4Al-5Mo-5V-5Cr-1Nb with hierarchical microstructure Materials Letters: X Deformation and fracture Electron microscopy Gradient microstructure Deformation twinning Strength-ductility synergy |
| title | Enhanced strength-ductility synergy in Ti-4Al-5Mo-5V-5Cr-1Nb with hierarchical microstructure |
| title_full | Enhanced strength-ductility synergy in Ti-4Al-5Mo-5V-5Cr-1Nb with hierarchical microstructure |
| title_fullStr | Enhanced strength-ductility synergy in Ti-4Al-5Mo-5V-5Cr-1Nb with hierarchical microstructure |
| title_full_unstemmed | Enhanced strength-ductility synergy in Ti-4Al-5Mo-5V-5Cr-1Nb with hierarchical microstructure |
| title_short | Enhanced strength-ductility synergy in Ti-4Al-5Mo-5V-5Cr-1Nb with hierarchical microstructure |
| title_sort | enhanced strength ductility synergy in ti 4al 5mo 5v 5cr 1nb with hierarchical microstructure |
| topic | Deformation and fracture Electron microscopy Gradient microstructure Deformation twinning Strength-ductility synergy |
| url | http://www.sciencedirect.com/science/article/pii/S2590150822000485 |
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