Development of ultrafine and nano-crystalline grain structures during modified accumulative roll bonding of titanium alloy, Ti-25Nb-3Zr-3Mo-2Sn

Kent, Damon, Wang, Gui, Yu, Zhentao, Ma, Xiqun and Dargusch, Matthew S. (2012). Development of ultrafine and nano-crystalline grain structures during modified accumulative roll bonding of titanium alloy, Ti-25Nb-3Zr-3Mo-2Sn. In: Lian Zhou, Hui Chang, Yafeng Lu and Dongsheng Xu, Proceedings of the 12th World Conference on Titanium. 12th World Conference on Titanium (Ti-2011 ), Beijing, China, (2111-2115). 19-24 June 2011.

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Name Description MIMEType Size Downloads
Author Kent, Damon
Wang, Gui
Yu, Zhentao
Ma, Xiqun
Dargusch, Matthew S.
Title of paper Development of ultrafine and nano-crystalline grain structures during modified accumulative roll bonding of titanium alloy, Ti-25Nb-3Zr-3Mo-2Sn
Conference name 12th World Conference on Titanium (Ti-2011 )
Conference location Beijing, China
Conference dates 19-24 June 2011
Proceedings title Proceedings of the 12th World Conference on Titanium
Journal name Ti 2011 - Proceedings of the 12th World Conference on Titanium
Place of Publication Beijing, China
Publisher Science Press
Publication Year 2012
Sub-type Fully published paper
ISBN 9787030338945
7030338944
Editor Lian Zhou
Hui Chang
Yafeng Lu
Dongsheng Xu
Volume 3
Start page 2111
End page 2115
Total pages 5
Chapter number 479
Total chapters 515
Collection year 2013
Language eng
Formatted Abstract/Summary
Titanium alloys with high strength to weight, excellent toughness, corrosion resistance and biocompatibility are favoured for a wide range of biomedical applications. The near β Ti-25Nb-3Zr-3Mo-2Sn alloy CTLM) is a new biomedical alloy suitable for implant applications. As well as being biocompatible, Ti alloys for surgical implants need to be mechanically compatible. A modified accumulative roll bonding (ARB) process
was developed to form a high strength, ultrafine grain version of the alloy. With each ARB cycle, iterative strength improvements lead to an almost doubling of the strength of the alloy after 4 cycles. This is coupled with an initial large drop in the ductility which then showed some recovery in subsequent cycles. A detailed investigation of the evolution of the microstructure was undertaken. There is a large variation in the grain sizes
throughout processing and at the completion of 4 cycles the grain sizes range from> lf.Lm to <20nm. Contributing to refinement is a dense network of shear bands made up of UFG grains < 20μm in size which form in later cycles.
Keyword Titaniam (Ti)
Biomedical
Accumulative rolling bond (ARB)
Ultrafine grained (UFG) microstructure
Transmission electron microscopy (TEM)
Q-Index Code B1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Conference Paper
Collections: Official 2013 Collection
School of Chemistry and Molecular Biosciences
 
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Created: Thu, 01 Nov 2012, 23:30:17 EST by Mr Damon Kent on behalf of School of Mechanical and Mining Engineering