Microstructural evolution and final properties of a cold-swaged multifunctional Ti-Nb-Ta-Zr-O alloy produced by a powder metallurgy route
Body centred cubic (BCC) ß-phase multifunctional titanium alloys have been developed with a very unique combination of thermal and mechanical properties. In this investigation, a very low porosity Ti-36.8-Nb-2.7Zr-2.0Ta-0.44O (wt%) alloy was produced by powder sintering, hot forging, solution treatm...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Published: |
Elsevier S.A.
2013
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| Online Access: | http://hdl.handle.net/20.500.11937/49996 |
| _version_ | 1848758369152663552 |
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| author | Guo, W. Quadir, Md Zakaria Moricca, S. Eddows, T. Ferry, M. |
| author_facet | Guo, W. Quadir, Md Zakaria Moricca, S. Eddows, T. Ferry, M. |
| author_sort | Guo, W. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Body centred cubic (BCC) ß-phase multifunctional titanium alloys have been developed with a very unique combination of thermal and mechanical properties. In this investigation, a very low porosity Ti-36.8-Nb-2.7Zr-2.0Ta-0.44O (wt%) alloy was produced by powder sintering, hot forging, solution treatment and cold swaging. X-ray diffraction and transmission electron microscopy (TEM) of the solution treated alloy revealed the presence of a small amount of ?-phase in a predominantly BCC ß-phase matrix. Electron backscatter diffraction (EBSD) of the swaged alloy revealed a highly elongated and fragmented microstructure, and a strong <110> fibre texture. TEM also revealed the existence of stress-induced twin lamella, dislocations and ?-phase. Consistent with previous studies on these types of alloys, the swaged alloy exhibited non-linear elasticity during tensile straining, low elastic modulus (45.4GPa), high elastic limit (2.3%), high elongation to failure (8.1%), and a high yield strength (880MPa) and tensile strength (940MPa). The coefficient of thermal expansion was also low (~5×10-6K-1 between 50 and 300°C) in this alloy. © 2013 Elsevier B.V. |
| first_indexed | 2025-11-14T09:42:53Z |
| format | Journal Article |
| id | curtin-20.500.11937-49996 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:42:53Z |
| publishDate | 2013 |
| publisher | Elsevier S.A. |
| recordtype | eprints |
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| spelling | curtin-20.500.11937-499962017-09-13T15:34:24Z Microstructural evolution and final properties of a cold-swaged multifunctional Ti-Nb-Ta-Zr-O alloy produced by a powder metallurgy route Guo, W. Quadir, Md Zakaria Moricca, S. Eddows, T. Ferry, M. Body centred cubic (BCC) ß-phase multifunctional titanium alloys have been developed with a very unique combination of thermal and mechanical properties. In this investigation, a very low porosity Ti-36.8-Nb-2.7Zr-2.0Ta-0.44O (wt%) alloy was produced by powder sintering, hot forging, solution treatment and cold swaging. X-ray diffraction and transmission electron microscopy (TEM) of the solution treated alloy revealed the presence of a small amount of ?-phase in a predominantly BCC ß-phase matrix. Electron backscatter diffraction (EBSD) of the swaged alloy revealed a highly elongated and fragmented microstructure, and a strong <110> fibre texture. TEM also revealed the existence of stress-induced twin lamella, dislocations and ?-phase. Consistent with previous studies on these types of alloys, the swaged alloy exhibited non-linear elasticity during tensile straining, low elastic modulus (45.4GPa), high elastic limit (2.3%), high elongation to failure (8.1%), and a high yield strength (880MPa) and tensile strength (940MPa). The coefficient of thermal expansion was also low (~5×10-6K-1 between 50 and 300°C) in this alloy. © 2013 Elsevier B.V. 2013 Journal Article http://hdl.handle.net/20.500.11937/49996 10.1016/j.msea.2013.03.029 Elsevier S.A. restricted |
| spellingShingle | Guo, W. Quadir, Md Zakaria Moricca, S. Eddows, T. Ferry, M. Microstructural evolution and final properties of a cold-swaged multifunctional Ti-Nb-Ta-Zr-O alloy produced by a powder metallurgy route |
| title | Microstructural evolution and final properties of a cold-swaged multifunctional Ti-Nb-Ta-Zr-O alloy produced by a powder metallurgy route |
| title_full | Microstructural evolution and final properties of a cold-swaged multifunctional Ti-Nb-Ta-Zr-O alloy produced by a powder metallurgy route |
| title_fullStr | Microstructural evolution and final properties of a cold-swaged multifunctional Ti-Nb-Ta-Zr-O alloy produced by a powder metallurgy route |
| title_full_unstemmed | Microstructural evolution and final properties of a cold-swaged multifunctional Ti-Nb-Ta-Zr-O alloy produced by a powder metallurgy route |
| title_short | Microstructural evolution and final properties of a cold-swaged multifunctional Ti-Nb-Ta-Zr-O alloy produced by a powder metallurgy route |
| title_sort | microstructural evolution and final properties of a cold-swaged multifunctional ti-nb-ta-zr-o alloy produced by a powder metallurgy route |
| url | http://hdl.handle.net/20.500.11937/49996 |