Phase stability and elastic properties of β Ti-Nb-X (X=Zr, Sn) alloys: An ab-initio density functional study
Rajamallu, Karre and Niranjan, Manish K and Kei, Ameyama and Dey, Suhash Ranjan (2017) Phase stability and elastic properties of β Ti-Nb-X (X=Zr, Sn) alloys: An ab-initio density functional study. Modelling and Simulation in Materials Science and Engineering. ISSN 0965-0393 (In Press)
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Alloying effects of Sn and Zr on β phase stability and elastic properties in Ti-Nb alloys are investigated within the framework of first-principles density functional theory. Our results suggest that the stability of β phase can be significantly enhanced by the addition of Sn and Zr in Ti-Nb alloys. The computed results indicate that Sn and Zr behave as strong β stabilizers in the Ti-Nb system. The elastic properties are found to be altered considerably by the addition of ternary alloying elements (Sn and Zr). The computed elastic moduli of Ti18.75at.%Nb6.25at.%Zr and Ti25at.%NbxZr compositions are found to be lower than that for Ti18.75at.%Nb6.25at.%Sn and Ti25at.%NbxSn system. The lowest value of ~54 GPa is obtained for Ti25at.%Nb6.25at.%Zr composition. Furthermore, the directional Young's modulus is found to be in the order of E<sub>100</sub> < E<sub>110</sub> < E<sub>111 </sub>for all the compositions of Ti-Nb-Zr and Ti-Nb-Sn system.
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| Item Type: | Article | ||||||
| Subjects: | Physics Materials Engineering > Materials engineering |
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| Divisions: | Department of Physics Department of Material Science Engineering |
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| Depositing User: | Team Library | ||||||
| Date Deposited: | 25 Oct 2017 05:23 | ||||||
| Last Modified: | 25 Oct 2017 05:37 | ||||||
| URI: | http://raiithold.iith.ac.in/id/eprint/3635 | ||||||
| Publisher URL: | https://doi.org/10.1088/1361-651X/aa93c1 | ||||||
| OA policy: | http://www.sherpa.ac.uk/romeo/issn/0965-0393/ | ||||||
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