Experimental Investigations on Ti6al4v Yttrium Oxide Metal Matrix Composite

Abstract

ABSTRACT newline Metallic Titanium and alloys found their wider applications in newlinethe domain of aerospace since they possess more strength, low density newlineand capability to withstand high temperatures as well as to resist wear newlinelosses. In the titanium alloy group, Ti-6Al-4V (Titanium Grade-4) is the newlinemostly used in titanium industry and it is contributing for more than newline50% of total titanium usage. It is recommended for the situations where newlinethe working temperature is around 350oC. But it is not recommended for newlinewear applications. newline In general, titanium based materials have the tendency of newlinetransforming reversibly from an alpha structure (HCP- hexagonal close newlinepacked) to a beta structure (BCC- body-centered cubic) whenever the newlinetemperature exceeds beyond certain level. This allotropic nature rely newlineupon the volume or weight percentage of alloying constituents, makes it newlineviable for more diversified microstructures and associated strengthening newlineattitudes than the alloys made up of non-ferrous materials such as Cu newlineand Al. Ti-6al-4V based metal matrix composite (MMCs) have been newlineproduced by adding ceramic reinforcements such as boron carbide, newlinesilicon carbide, titanium carbide and titanium boride, yttrium oxide etc. newlineAmong the available host materials, ceramic reinforcements have newlineacknowledged much attention in recent researchers due to its excellent newlinematerial properties and its aptness as a waveguide and a laser host. The newlinematerial properties such as high refractive index (1.7 1.9) and newlineexcellent thermal conductivity is suitable for engineering applications. newline The main objective of the current research work presented newlinehere is to develop a Ti-6Al-4V based composite by varying the newlinereinforcement to produce titanium alloy based composite with enhanced newlinehigh temperature mechanical performance is expected. The powder newlinemetallurgy route will be used for preparing the composites preforms. newlineThe major processes of this study will be manufacturing of composite newlinepreforms, mechanical testing and evaluating microstructures. The work carried out and their associated results and discussions will be helpful to newlinestrengthen the Ti6Al4V composites by means of ceramic newlinereinforcements newline