Publication: Mechanical behaviour of pressed and sintered titanium alloys obtained from prealloyed and blended elemental powders
Loading...
Identifiers
Publication date
2012-10
Defense date
Advisors
Tutors
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Impact
Export
Abstract
The applicability of irregular prealloyed Ti-6Al-4V powder for the fabrication of titanium products by pressing and sintering and its employment as a master alloy to obtain the Ti-3Al-2.5V alloy was studied. To this end, the starting powders were characterised by dilatometry, differential thermal analysis and XRD. Green samples were obtained by cold uniaxial pressing, and the evolution of the microstructure over the sintering temperature range 900-1400 °C was studied. The variation of the final density and mechanical properties with the sintering temperature was considered. Based on the study carried out, it can be stated that more reliable powders are needed to open the titanium market to new applications. A relative density of 95% and diverse microstructural features and mechanical properties equivalent to those of biomedical devices can be obtained by the pressing and sintering route.
Description
Keywords
Ti 3Al 2.5V, Ti 6Al 4V, Titanium P/M, Prealloyed (PA), Blending elemental (BE), Flexural strength
Bibliographic citation
Journal of the Mechanical Behavior of Biomedical Materials, Oct. 2012, v.14, pp. 29-38.