Conference Proceedings
Solid-state recycling of titanium machining chips by severe plastic deformation
P Luo, DT McDonald, S Palanisamy, MS Dargusch, K Xia
Ti 2011 Proceedings of the 12th World Conference on Titanium | SCIENCE PRESS BEIJING | Published : 2012
Abstract
Machining chips of commercially pure(CP)Ti and T1-6A1-4V were recycled without melting by means of severe plastic deformation(SPD). The asreceived chips were consolidated into fully dense bulk material using equal channel angular pressing(ECAP)at temperatures between 400 and 600°C for a various number of passes with the application of a back pressure of 50 MPa. The SPD-induced ultrafine grain structure resulted in superior mechanical properties compared to those of Ti solid bars processed under the same conditions. It is demonstrated that SPD consolidation is a promising technology for value-adding recycling of Ti.
Grants
Funding Acknowledgements
This work was supported by the Defence Materials Technology Centre(DMTC). The authors gratefully acknowledge Dr. S. M. Zhu with Monash University, for assistance in EBSD characterisation.