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Materials 2017, 10(5), 458; doi:10.3390/ma10050458

Structure and Mechanical Properties of As-Cast Ti–5Sn–xMo Alloys

1
Department of Surgery, Division of Orthopaedics, Zuoying Branch of Kaohsiung Armed Forces General Hospital, Kaohsiung 81342, Taiwan
2
Department of Dental Technology and Materials Science, Central Taiwan University of Science and Technology, Taichung 40601, Taiwan
3
Department of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung 81148, Taiwan
*
Author to whom correspondence should be addressed.
Academic Editor: Jordi Sort
Received: 17 March 2017 / Revised: 23 April 2017 / Accepted: 24 April 2017 / Published: 27 April 2017
(This article belongs to the Section Structure Analysis and Characterization)
View Full-Text   |   Download PDF [37317 KB, uploaded 27 April 2017]   |  

Abstract

Ti–5Sn–xMo (x = 0, 1, 3, 5, 7.5, 10, 12.5, 15, 17.5, and 20 wt %) alloys were designed and prepared for application as implant materials with superior mechanical properties. The results demonstrated that the crystal structure and mechanical properties of Ti–5Sn–xMo alloys are highly affected by their Mo content. The as-cast microstructures of Ti–5Sn–xMo alloys transformed in the sequence of phases α′ → α″ → β, and the morphologies of the alloys changed from a lath structure to an equiaxed structure as the Mo content increased. The α″-phase Ti–5Sn–7.5Mo (80 GPa) and β-phase Ti–5Sn–10Mo (85 GPa) exhibited relatively low elastic moduli and had excellent elastic recovery angles of 27.4° and 37.8°, respectively. Furthermore, they exhibited high ductility and moderate strength, as evaluated using the three-point bending test. Search for a more suitable implant material by this study, Ti–5Sn–xMo alloys with 7.5 and 10 wt % Mo appear to be promising candidates because they demonstrate the optimal combined properties of microhardness, ductility, elastic modulus, and elastic recovery capability. View Full-Text
Keywords: titanium alloys; microstructure; mechanical properties titanium alloys; microstructure; mechanical properties
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MDPI and ACS Style

Yu, H.-N.; Hsu, H.-C.; Wu, S.-C.; Hsu, S.-K.; Ho, W.-F. Structure and Mechanical Properties of As-Cast Ti–5Sn–xMo Alloys. Materials 2017, 10, 458.

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