Multimodal nanostructured titanium using severe plastic deformation
Wen, C., Yang, D. K., Li, Y. C. and Hodgson, P.D. 2011, Multimodal nanostructured titanium using severe plastic deformation, in ICHMM 2011 : Advances in heterogeneous material mechanics 2011 : proceedings of the Third International Conference on Heterogeneous Material Mechanics : May 22-26, 2011, Shanghai, China, Destech Publications, Lancaster, Pa., pp. 623-629.
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Multimodal nanostructured titanium using severe plastic deformation
ICHMM 2011 : Advances in heterogeneous material mechanics 2011 : proceedings of the Third International Conference on Heterogeneous Material Mechanics : May 22-26, 2011, Shanghai, China
In the present study, multimodal nanostructured titanium was engineered using severe plastic deformation. The multimodal structured titanium exhibits an ultrahigh strength of over 940 MPa and a large failure elongation of 24%. The ultrahigh strength is mainly derived from the nanostructured structures; whilst the exceptional ductility originates from the large fraction of high angle grain boundaries, micro-scale structures, and the non-equilibrium grain boundary configuration. It is worth noting that apart from dislocation slip processes, the formation of deformation twins reduced the effective slip distance and increased the strain hardening capacity via the Hall-Petch mechanism, leading to high ductility of the multimodal structured titanium.
ISBN
9781605950549
Language
eng
Field of Research
091207 Metals and Alloy Materials 090399 Biomedical Engineering not elsewhere classified