Open Access Conference Proceedings

Recently developed metastable alloy Ti–35.3Nb–7.3Zr–5.7Ta–0.7O (wt.%) abbreviated TNZTO is unique in its high oxygen content and exhibits promising properties for successful use in biomedicine, namely for total endoprostheses and bone fixation. As-cast material is not fully homogeneous; it shows dendritic structure and high density of micro-sized pores. High O content causes increased strength and, interestingly, good ductility with elongation > 12 %. Tensile tests were performed on the as-cast material and material after hightemperature die forging. As-cast material showed yield stress > 900 MPa, whereas yield stress of die-forged material exceeds 1100 MPa. The microhardness tests were also performed on the as-cast and die-forged conditions. Strength values exceed the most used Ti6Al4V alloy and therefore the studied alloy is very perspective for manufacturing load-bearing orthopaedic implants.

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