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Effect of Processing Route on Microstructure and Mechanical Properties of a Ti-3Al-2.5V/TiB Composite

Ropars, Ludovic and Dehmas, Moukrane and Aeby-Gautier, Elisabeth and Tricker, David and Schuster, Dominique and Gourdet, Sophie Effect of Processing Route on Microstructure and Mechanical Properties of a Ti-3Al-2.5V/TiB Composite. (2018) Materials Science Forum, 941. 1950-1955. ISSN 1662-9752

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Official URL: https://doi.org/10.4028/www.scientific.net/MSF.941.1950

Abstract

A Ti-3Al-2.5V matrix composite reinforced with 8.5 vol.% TiB was produced using a powder metallurgy route. Processing included the mechanical alloying of Ti-3Al-2.5V and TiB2 powders and Hot Isostatic Pressing (HIP) of the resultant composite powders, to produce a dense billet. These billets were subsequently extruded and/or subjected to various Conversion Heat Treatments (CHT), to complete the transformation of the TiB2 particles into TiB needles. The CHT was performed either before or after extrusion. Microstructures and tensile properties of the materials at each stage of the processing routes were investigated and compared to those of a non-reinforced Ti-3Al-2.5V material, manufactured by the same powder metallurgy route. It has been demonstrated that the processing routes have a great impact on the mechanical properties, through modifications of the matrix and reinforcement characteristics. Well-chosen processing routes lead to more ductile composites, though this gain in ductility leads to slightly lower stiffness and strength values. This study clearly demonstrates the possibility to produce, at an industrial scale, a ductile version of a highly reinforced titanium matrix composite, showing important application potential.

Item Type:Article
HAL Id:hal-03190658
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > Materion AMC (UNITED KINGDOM)
Other partners > Airbus (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Université de Lorraine (FRANCE)
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Deposited On:06 Apr 2021 12:34

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