Parameter optimization of microwave sintering porous Ti-23%Nb shape memory alloys for biomedical applications
Porous Ti-23%Nb (mole fraction) shape memory alloys (SMAs) were prepared successfully by microwave sintering with excellent outer finishing (without space holder). The effects of microwave-sintering on the microstructure, phase composition, phase-transformation temperature, mechanical properties and...
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| Format: | Article |
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Nonferrous Metals Society of China
2018
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| _version_ | 1796863975407747072 |
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| author | Ibrahim, Mustafa K. Hamzah, E. Saud, Safaa N. Nazim, E. M. Bahador, A. |
| author_facet | Ibrahim, Mustafa K. Hamzah, E. Saud, Safaa N. Nazim, E. M. Bahador, A. |
| author_sort | Ibrahim, Mustafa K. |
| collection | ePrints |
| description | Porous Ti-23%Nb (mole fraction) shape memory alloys (SMAs) were prepared successfully by microwave sintering with excellent outer finishing (without space holder). The effects of microwave-sintering on the microstructure, phase composition, phase-transformation temperature, mechanical properties and shape-memory effect were investigated. The results show that the density and size of porosity vary based on the sintering time and temperature, in which the smallest size and the most uniform pore shape are exhibited with Ti-23%Nb SMA after being sintered at 900 °C for 30 min. The microstructure of porous Ti-Nb SMA consists of predominant α″ α and β phases in needle-like and plate-like morphologies, and their volume fractions vary based on the sintering time and temperature. The β phase represents the largest phase due to the higher content of β stabilizer element with little intensities of α and α″ phases. The highest ultimate strength and its strain are indicated for the sample sintered at 900 °C for 30 min, while the best superelasticity is for the sample sintered at 1200 °C for 30 min. The low-elastic modulus enables these alloys to avoid the problem of “stress shielding”. Therefore, microwave heating can be employed to sinter Ti-alloys for biomedical applications and improve the mechanical properties of these alloys. |
| first_indexed | 2024-03-05T20:34:50Z |
| format | Article |
| id | utm.eprints-85088 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T20:34:50Z |
| publishDate | 2018 |
| publisher | Nonferrous Metals Society of China |
| record_format | dspace |
| spelling | utm.eprints-850882020-02-29T13:43:17Z http://eprints.utm.my/85088/ Parameter optimization of microwave sintering porous Ti-23%Nb shape memory alloys for biomedical applications Ibrahim, Mustafa K. Hamzah, E. Saud, Safaa N. Nazim, E. M. Bahador, A. TK Electrical engineering. Electronics Nuclear engineering Porous Ti-23%Nb (mole fraction) shape memory alloys (SMAs) were prepared successfully by microwave sintering with excellent outer finishing (without space holder). The effects of microwave-sintering on the microstructure, phase composition, phase-transformation temperature, mechanical properties and shape-memory effect were investigated. The results show that the density and size of porosity vary based on the sintering time and temperature, in which the smallest size and the most uniform pore shape are exhibited with Ti-23%Nb SMA after being sintered at 900 °C for 30 min. The microstructure of porous Ti-Nb SMA consists of predominant α″ α and β phases in needle-like and plate-like morphologies, and their volume fractions vary based on the sintering time and temperature. The β phase represents the largest phase due to the higher content of β stabilizer element with little intensities of α and α″ phases. The highest ultimate strength and its strain are indicated for the sample sintered at 900 °C for 30 min, while the best superelasticity is for the sample sintered at 1200 °C for 30 min. The low-elastic modulus enables these alloys to avoid the problem of “stress shielding”. Therefore, microwave heating can be employed to sinter Ti-alloys for biomedical applications and improve the mechanical properties of these alloys. Nonferrous Metals Society of China 2018-04 Article PeerReviewed Ibrahim, Mustafa K. and Hamzah, E. and Saud, Safaa N. and Nazim, E. M. and Bahador, A. (2018) Parameter optimization of microwave sintering porous Ti-23%Nb shape memory alloys for biomedical applications. Transactions of Nonferrous Metals Society of China, 28 (4). pp. 700-710. ISSN 1003-6326 http://dx.doi.org/10.1016/S1003-6326(18)64702-8 |
| spellingShingle | TK Electrical engineering. Electronics Nuclear engineering Ibrahim, Mustafa K. Hamzah, E. Saud, Safaa N. Nazim, E. M. Bahador, A. Parameter optimization of microwave sintering porous Ti-23%Nb shape memory alloys for biomedical applications |
| title | Parameter optimization of microwave sintering porous Ti-23%Nb shape memory alloys for biomedical applications |
| title_full | Parameter optimization of microwave sintering porous Ti-23%Nb shape memory alloys for biomedical applications |
| title_fullStr | Parameter optimization of microwave sintering porous Ti-23%Nb shape memory alloys for biomedical applications |
| title_full_unstemmed | Parameter optimization of microwave sintering porous Ti-23%Nb shape memory alloys for biomedical applications |
| title_short | Parameter optimization of microwave sintering porous Ti-23%Nb shape memory alloys for biomedical applications |
| title_sort | parameter optimization of microwave sintering porous ti 23 nb shape memory alloys for biomedical applications |
| topic | TK Electrical engineering. Electronics Nuclear engineering |
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