Multiscale two-phase Ti-Al with high strength and plasticity through consolidation of particles by severe plastic deformation
EW Lui, W Xu, X Wu, K Xia
SCRIPTA MATERIALIA | PERGAMON-ELSEVIER SCIENCE LTD | Published : 2011
A multiscale structured material consisting of dual phases of Ti and Al was processed by severe plastic deformation. An elemental powder mixture of Ti-47 at.% Al was mechanically milled to produce particles with two finely dispersed phases, then consolidated using equal channel angular pressing. Microstructure observations revealed a sophisticated organisation of micro- and nanoscaled Ti and Al phases embedded in each other. This unique structure led to significantly enhanced strength with good plasticity. © 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
This research is partially supported by the Australian Research Council with the ARC Centre of Excellence for Design in Light Metals. E.W.L. acknowledges an Australian Postgraduate Award Scholarship from the University of Melbourne.