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Wear behavior of Ti6Al4V biomedical alloys processed by selective laser melting, hot pressing and conventional casting
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Advisor(s)
Abstract(s)
The aim of this work was to study the influence of the processing route on the microstructural constituents, hardness and tribological (wear and friction) behavior of Ti6Al4V biomedical alloy. In this sense, three different processing routes were studied: conventional casting, hot pressing and selective laser melting. A comprehensive metallurgical, mechanical and tribological characterization was performed by X-ray diffraction analysis, Vickers hardness tests and reciprocating ball-on-plate wear tests of Ti6Al4V/Al2O3 sliding pairs. The results showed a great influence of the processing route on the microstructural constituents and
consequent differences on hardness and wear performance. The highest hardness and wear resistance were obtained for Ti6Al4V alloy produced by selective laser melting, due to a markedly different cooling rate that leads to significantly different microstructure when compared to hot pressing and casting. This study assesses and confirms that selective laser melting is potential to produce customized Ti6Al4V implants with improved wear performance.
Description
Keywords
biomedical alloy Ti6Al4V alloy wear behavior microstructure selective laser melting hot pressing casting
Pedagogical Context
Citation
F. BARTOLOMEU, M. BUCIUMEANU, E. PINTO, N. ALVES, F.S. SILVA, O. CARVALHO, G. MIRANDA, Wear behavior of Ti6Al4V biomedical alloys processed by selective laser melting, hot pressing and conventional casting, Transactions of Nonferrous Metals Society of China, Volume 27, Issue 4, 2017, Pages 829-838, ISSN 1003-6326, https://doi.org/10.1016/S1003-6326(17)60060-8
Publisher
Elsevier BV
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CC License
Without CC licence