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

Damon Kent; Gui Wang; Zhentao Yu; Xiqun Ma; Matthew Dargusch

doi:10.1016/j.jmbbm.2010.11.013

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

Files and links (1)

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

Title: Strength enhancement of a biomedical titanium alloy through a modified accumulative roll bonding technique
Authors: Damon Kent (Author) - University of Queensland
Gui Wang (Author) - University of Queensland
Zhentao Yu (Author) - Northwest Institute for Nonferrous Metal Research, China
Xiqun Ma (Author) - Northwest Institute for Nonferrous Metal Research, China
Matthew Dargusch (Author) - University of Queensland
Publication details: Journal of the Mechanical Behavior of Biomedical Materials, Vol.4(3), pp.405-416
Publisher: Elsevier Ltd.
Date published: 2011
DOI: 10.1016/j.jmbbm.2010.11.013
ISSN: 1751-6161; 1751-6161
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering
Language: English
Record Identifier: 99449208302621
Output Type: Journal article

Metrics

504 Record Views

60 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