Development of Cu-bearing powder metallurgy Ti alloys for biomedical applications

Abstract

Cu-bearing Ti alloys could be used as structural biomedical materials where the releasing of Cu ions is beneficial to lower infection incidences associated with surgical implants. The manufacturing of these alloys via powder metallurgy techniques can lower the production costs. In this study three ternary Cu-bearing Ti-xAl-yCu alloys were produced using conventional powder metallurgy. The mechanical properties increase with the amount of alloying elements. Samples of each composition were also forged to clarify the effect of subjecting them to hot deformation. Forging the samples improved the strength of the alloys due to the reduction of porosity and the refinement of the microstructural features. It is found that the Ti-2Al-1Cu is the most ductile, Ti-6Al-4Cu is the strongest and Ti-10Al-5Cu has a purely elastic behaviour. Some of these powder metallurgy Ti-xAl-yCu alloys have better overall mechanical behaviour than their cast counterparts and therefore are valuable alternative to produce medical and dental implants with improved properties and reduced cost.

Carbonaceous nanomaterial reinforced Ti-6Al-4V matrix composites: Properties, interfacial structures and strengthening mechanisms

“…Compared to the conventional pure metals (such as Cu, Al, Mg and Ti) and their alloys, metal matrix composites (MMCs) have attracted great interest in recent years owing to their excellent physical/mechanical properties (including high strength and elastic modulus, high hardness, good wear resistance, and good thermal/ electrical properties) [1][2][3][4][5][6][7][8][9][10]. For examples, Cu matrix composites are preferred for electrical and tribological applications owing to their good electrical and thermal conductivities [11][12][13], whereas Al matrix composites are extensively used in aerospace and automotive industries due to their relatively low density and good workability [2,[14][15].…”

Biomedical Alloys and Physical Surface Modifications: A Mini-Review

“…Yang et al [ 77 ] introduced gel-casting to obtain near-shape porous Ti alloys and that could even directly fabricate customized implants. The releasing of Cu ions is beneficial to lower infection incidences in Cu-bearing Ti alloys [ 78 ].…”

One-Step Enameling and Sintering of Low-Carbon Steels

“…Metal powders can be pre-alloyed [44,45] or mechanically alloyed [34,46]; it depends on the application sought. PM seeks added value for use on an industrial scale, such as biomedical implants using wear-resistant titanium alloys [47][48][49] or in the manufacture of hard metals for cutting tools or coatings [50]. Currently, one of its main applications is in the automotive industry for the manufacturing of small and complex components.…”