Authors:
Recalcati S. (1), Denis G. (2), Mortensen A. (2), Fais A. (1)
1- EPoS Technologies SA, ZI du Vivier 22, 1690 Villaz-St-Pierre (Switzerland)
2- Laboratory of Mechanical Metallurgy (LMM), Ecole Polytechnique Fédérale de Lausanne (EPFL), MX-D 141, Station 12, CH-1015 Lausanne (Switzerland)
Abstract:
This work investigates the in-situ formation of TiC in titanium blended with carbon during Electro-Sinter-Forging (ESF) at different levels of Specific Energy Input kJ·g-1. When sintering powder mixtures of CP-Ti in compositions between 0.5 to 1%-wt graphite, carbon atoms diffuse and react with titanium to precipitate acicular or dendritic TiC in a near-fully to fully dense material. The shape of these precipitates evolves with increasing levels of energy from being finely dispersed sharp lamellae to a dendritic-like network. Understanding this behavior opens new possibilities to design novel reinforced Electro-Sinter-Forged titanium alloys or composites by precisely controlling the precipitated TiC shape and arrangement with a goal to optimize structural or functional properties of the material.
DOI:
https://doi.org/10.59499/EP235764195