In Situ Reinforcement of Ti6Al4V Matrix Composites by Polymer‐Derived‐Ceramics Phases1. Issue 6 (3rd November 2014)

• Record Type: Journal Article
• Authors: Fabrizi, Alberto; Bonollo, Franco; Colombo, Paolo; Biasetto, Lisa
• Is Part Of: Advanced engineering materials. Volume 17:Issue 6(2015:Jun.)
• Page Start: 866
• Page End: 875
• Publication Date: 2014-11-03
• Subjects: Materials -- Periodicals; 620.11
• DOI: 10.1002/adem.201400362
• Languages: English
• ISSNs: 1438-1656

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <sec id="adem201400362-sec-0001" sec-type="section"> <p>Ti6Al4V‐based metal matrix composites (MMCs) are successfully synthesized via a novel process route. Ti6Al4V powder is premixed with a solid preceramic polymer used as precursor for the in situ formation of a ceramic phase dispersed at the micrometer range. Ball‐milling is used to intimately mix the powders. After the pyrolysis and sintering step, a Ti₅Si₃ and TiC dispersion within the Ti6Al4V equiaxed grains matrix is formed. The effect of the volume fraction of the polymer‐derived ceramic phase in the Ti6Al4V matrix is investigated in terms of Vickers hardness and wear resistance. The introduction of 10 vol% of ceramic reinforcement produces a homogeneous structure and results in a compact material with improved integrity and enhanced mechanical properties compared to standard cast alloy or Ti6Al4V‐based composites reported in the literature.</p> </sec> </abstract>