ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Beta titanium alloys, e.g., are now the main target for medical materials. Ti-35Nb-7Zr-5Ta alloy were manufactured by blended elemental (BE) powder method, which appears to be oneof the most promising technique for titanium parts production at reduced cost. The process employshydrided powders as raw materials with low production costs and oxygen content. Among thetitanium alloys recently developed, Ti-35Nb-7Zr-5Ta is distinguished for presenting low modulusof elasticity, high mechanical resistance and superior biocompatibility. Samples were produced bymixing of initial metallic powders followed by uniaxial and cold isostatic pressing with subsequentdensification by sintering among 800 at 1500 °C, in vacuum. Sintering behavior was studied bymeans of dilatometry. Sintered samples were characterized for phase composition, microstructureand microhardness by X-ray diffraction, scanning electron microscopy and Vickers indentation,respectively. Density was measured by Archimedes method. In this work, an alternative blendingtechnique (with planetary mill) was used. The samples presented a good densification and a totallyβ-type microstructure, with complete dissolution of alloying elements in the titanium matrix withthe temperature increase with low pore content
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.530-531.341.pdf
