Effects of Composition on Solidification Microstructure of Cast Titanium Alloys
The high cost of processing of Ti alloys is an important limitation to their utilization in a number of applications. An approach to overcome such difficulties would be their processing by precision casting. The purpose of this work is to evaluate the centrifugal casting process of Ti-Cu and Ti-Nb alloys, analysing the influence of alloying element type and content in the obtained microstructure. Samples with different compositions were prepared in arc furnace with non-consumable tungsten electrode and water-cooled copper hearth under high purity argon atmosphere and cast in a copper mould. Microstructures were analysed by SEM, characterized by EDS and X-ray diffraction. Vickers hardness measurements helped the analysis of phases.
A. Roósz, V. Mertinger, P. Barkóczy and Cs. Hoó
P.N. Andrade et al., "Effects of Composition on Solidification Microstructure of Cast Titanium Alloys", Materials Science Forum, Vol. 649, pp. 183-188, 2010