Logo image
Back
Strength enhancement of a biomedical titanium alloy through a modified accumulative roll bonding technique
Journal article   Peer reviewed

Strength enhancement of a biomedical titanium alloy through a modified accumulative roll bonding technique

Damon Kent, Gui Wang, Zhentao Yu, Xiqun Ma and Matthew Dargusch
Journal of the Mechanical Behavior of Biomedical Materials, Vol.4(3), pp.405-416
2011
DOI: https://doi.org/10.1016/j.jmbbm.2010.11.013
url
https://doi.org/10.1016/j.jmbbm.2010.11.013View
Published Version

Abstract

Biomedical Engineering Materials Engineering Mechanical Engineering accumulative roll bonding (ARB) ultrafine grained microstructure shear bands biomedical titanium alloy transmission electron microscopy (TEM)
The strength of a biomedical ββ-type alloy, Ti-25Nb-3Zr-3Mo-2Sn, was enhanced through severe plastic deformation using a modified accumulative roll bonding technique. Incremental strength increases were observed after each cycle, while ductility initially fell but showed some recovery with further cycles. After 4 cycles there was a 70% improvement in the ultimate tensile strength to 1220 MPa, a two-fold increase in the 0.5% proof stress to 946 MPa and the ductility was 4.5%. The microstructure comprised of ultrafine grain ββ grains heavily elongated in the rolling direction with a fine dispersion of nanocrystalline αα phase precipitates on the ββ grain boundaries. Shear bands formed in order to accommodate large plastic strains during processing and the grains within the bands were significantly finer than the surrounding matrix.

Details

Metrics

515 Record Views
61 Times Cited - Web of Science

InCites Highlights

These are selected metrics from InCites Benchmarking & Analytics tool, related to this output

Collaboration types
Domestic collaboration
International collaboration
Web Of Science research areas
Engineering, Biomedical
Materials Science, Biomaterials
Logo image