选择激光熔化、热压缩和传统铸造工艺加工的Ti6Al4V生物合金的磨损行为.pdfVIP

Trans. Nonferrous Met. Soc. China 27(2017) 829−838 Wear behavior of Ti6Al4V biomedical alloys processed by selective laser melting, hot pressing and conventional casting 1 2 3 3 1 1 1 F. BARTOLOMEU , M. BUCIUMEANU , E. PINTO , N. ALVES , F. S. SILVA , O. CARVALHO , G. MIRANDA 1. Center for Micro-Electro Mechanical Systems (CMEMS-UMinho), University of Minho, Azurém, 4800-058 Guimarães, Portugal; 2. Cross-Border Faculty of Humanities, Economics and Engineering, “Dunărea de Jos” University of Galaţi, Domnească 47, 800008 Galati, Romania; 3. Centre for Rapid and Sustainable Product Development Polytechnic Institute of Leiria, Rua General Norton de Matos, Apartado 4133, 2411-901 Leiria, Portugal Received 5 April 2016; accepted 2 June 2016 Abstract: 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/Al O sliding pairs. The results showed a great influence of the processing route on the microstructural constituents and 2 3 consequent differences on hard