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PM Based Titanium Matrix Composites For Aerospace Applications: Processing, Mechanical Properties And Scale Up

  • : Miguel Angel Lagos1, Iñigo Agote1, Garbiñe Atxaga1, Laurent Pambaguian2
  • : 1TECNALIA, 2ESA-ESTEC
  • : PDF Download
  • : 2017

Abstract

The reinforcement of titanium with a hard phase is an efficient way to increase the stiffness and strength of conventional titanium alloys. The high reactivity of titanium is a critical challenge in the processing of Titanium Matrix Composites (TMCs). For this reason, Powder Metallurgy is considered a very promising route for the manufacturing of TMCs. In this work, a master alloy (Ti-TiC) was developed by combustion synthesis. This alloy was further blended with conventional titanium alloy and the final consolidation was performed by Spark Plasma Sintering. In addition to the processing details, microstructural and thermomechanical characterization is presented. Materials obtained present higher Young Modulus and strength than conventional Ti-6Al-4V, with higher thermal conductivity and maintaining similar thermal expansion coefficient (CTE). The good corrosion resistance of the material makes it a candidate for possible applications in aerospace. This work presents also the scale up of the process to obtain aerospace demonstrators.

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