Microstructural response of metastable beta Ti alloys to cold swaging and annealing

Abstract

Metastable titanium alloys that attain pure beta (bcc) phase upon quenching have attracted much attention in the last 2 decades due to desired combination of properties: high strength, low Young's modulus and content of purely biocompatible elements. Very high strength (over 1000 MPa) of alloys with composition Ti-Nb-Zr-Ta-O is achieved by relatively large amount of interstitial oxygen (0.7 wt.%) and Young's modulus can be tuned by content of beta stabilizing elements (26 - 35 % of Nb, 0 - 6 % of Ta and 7 % of Zr).