Journal article

Hybridisation of microstructures from three classes of titanium alloys

Ahmad Zafari, Edward W Lui, Shenbao Jin, Mogeng Li, Tesfaye T Molla, Gang Sha, Kenong Xia

Materials Science and Engineering: A | Elsevier BV | Published : 2020

Abstract

A ternary hybrid Ti alloy (HYTA) was produced by selective laser melting (SLM), combining all three classes of the titanium system. The hybridisation of the α CP Ti, α-β Ti-64 and β Ti-5553 gave rise to a highly heterogeneous microstructure encompassing all the possible phases and structures which do not co-exist in conventional monolithic Ti alloys. The details of the complex microstructure were comprehensively characterised, revealing the roles played by such important factors as the distribution of the ingredient alloy particles, the Marangoni convection and diffusion of solute during melting, and microsegregation of solute during solidification. The ternary HYTA exhibited an excellent co..

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Grants

Awarded by Australian Research Council


Awarded by University of Melbourne


Funding Acknowledgements

We are grateful to Mr. Graham Hutchinson for conducting WDS analysis and to Mr. Daejung Kim for producing the binary powder and Fig. 3e. We appreciate the facilities and technical assistance provided by the Bio21 Advanced Microscopy Unit, and Melbourne TrACEES Platform (Trace Analysis for Chemical and Environmental Sciences) at the University of Melbourne and by RMMF (RMIT Microscopy and Microanalysis Facility) at RMIT University. The financial support by the Australian Research Council under DP190103557 and the University of Melbourne (ECRG2020) is acknowledged.