High Strength Beta Titanium Alloys: New Design Approach

Authors/Creators

Ilya V. Okulov
Horst Wendrock
Aleksey S. Volegov
Hooyar Attar, Edith Cowan UniversityFollow
Uta Kuhn
Werner Skrotzki
Jürgen Eckert

Abstract

A novel approach for development of high strength and ductile beta titanium alloys was proposed and successfully applied. The microstructure of the designed alloys is fully composed of a bcc β-Ti phase exhibiting dendritic morphology. The new Ti_68.8Nb_13.6Cr_5.1Co₆Al_6.5 (at%) alloy (BETA^tough alloy) exhibits a maximum tensile strength of 1290±50 MPa along with 21±3% of fracture strain. The specific energy absorption value upon mechanical deformation of the BETA^tough alloy exceeds that of Ti-based metallic glass composites and commercial high strength Ti-based alloys. The deformation behavior of the new alloys was correlated with their microstructure by means of in-situ studies of the microstructure evolution upon tensile loading in a scanning electron microscope.

Document Type

Journal Article

Date of Publication

2015

Faculty

Faculty of Health, Engineering and Science

Publisher

Elsevier

School

School of Engineering

RAS ID

20319

Comments

Okulov, I. V., Wendrock, H., Volegov, A. S., Attar, H., Kühn, U., Skrotzki, W., & Eckert, J. (2015). High strength beta titanium alloys: New design approach. Materials Science and Engineering: A, 628(0), 297-302. doi: http://dx.doi.org/10.1016/j.msea.2015.01.073. Available here

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