The effect of ternary alloying with vanadium on Ti-Pt shape memory alloys

Show simple item record Daswa, P. Chikosha, S. Mahlatjii, M.L. Siyasiya, Charles Witness 2020-05-07T14:11:57Z 2020-05-07T14:11:57Z 2019-11-09
dc.description.abstract Ti-Pt alloys have attracted much research due to high transformation temperatures (1050oC) which makes them suitable for high temperature applications in automotive and aerospace industries. The binary alloy exhibits negligible shape memory effect and the amount of platinum (Pt) required to produce this alloy makes it very expensive which limits its practical application and commercialization. Ternary alloying of Ti-Pt could lead to solid solution strengthening and improved shape memory properties. Furthermore, ternary alloying by replacing Pt could reduce the cost of the alloy. However, it could lead to changes in the microstructure, crystal structure, transformation temperatures and transformation temperature hysteresis that would significantly affect the shape memory behaviour of the alloy. This paper investigates the effect of ternary alloying of Ti-Pt with varying vanadium contents (0-18.25 at.%) on the as-cast condition. The effect of ternary alloying on the microstructure, transformation temperature and transformation temperature hysteresis were studied. The Ti50-Pt50-x-Vx (x = 6.25 to 18.25 at.%) alloys were produced by the button arc melting method using elemental powders of titanium, platinum and vanadium. Results showed the formation of martensitic α-Ti50(Pt,V)50 with Ti3Pt, (Ti,V)3Pt, Ti4Pt3-like and oxide phases in Ti-Pt-(V) alloys. The phase transformation temperature of Ti-Pt alloys decreased with increasing vanadium content up to 10.2 at.% V. en_ZA
dc.description.department Materials Science and Metallurgical Engineering en_ZA
dc.description.librarian am2020 en_ZA
dc.description.uri en_ZA
dc.identifier.citation Daswa, P., Chikosha, S., Mahlatji, M.L. et al. 2019, 'The effect of ternary alloying with vanadium on Ti-Pt shape memory alloys', IOP Conference Series: Materials Science and Engineering, vol. 655, art. 012024, pp. 1-9. en_ZA
dc.identifier.issn 1757-8981 (print)
dc.identifier.issn 1757-899X (online)
dc.identifier.other 10.1088/1757-899X/655/1/012024
dc.language.iso en en_ZA
dc.publisher IOP Publishing en_ZA
dc.rights Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. en_ZA
dc.subject Temperature en_ZA
dc.subject Ti-Pt alloys en_ZA
dc.subject Automotive and aerospace industries en_ZA
dc.subject Platinum (Pt) en_ZA
dc.title The effect of ternary alloying with vanadium on Ti-Pt shape memory alloys en_ZA
dc.type Article en_ZA

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