Tensile Behaviour of Thermal Cycled Titanium (Ti-6Al-4V) Alloy / Nano SiC Composites

Abstract

Nanocomposites are composites that consist of nanosized particles embedded in some type of matrix are a group of promising new materials that will undoubtedly become infused with some of our modern technologies. Material property combinations and ranges have been, and are yet being, extended by the development of composite materials. Already Titanium is recognized for its strategic importance as a unique lightweight, high strength alloyed structurally efficient metal for critical, high-performance aircraft, such as jet engine and airframe components. Due to its high strength-to-weight ratio, Titanium is called as the "space age metal". Today, titanium alloys are common, readily available engineered metals that compete directly with stainless and Specialty steels, copper alloys, nickel based alloys and composites. In order to reduce residual stress developed during fabrication and to increase the strength a new composite material of Titanium (Ti-6Al-4V) Alloy with Nano SiC are needed. This composite also is an alpha beta alloy which is subjected to annealing and solution treatment to attain beta phase. This beta phase is maintained by quenching and subsequent aging to increase strength. Thermal cycling process was carried out for heat treated composite specimen. This paper reports on the investigation of tensile behaviour of different Heat treated and thermal cycled composite material of Titanium (Ti-6Al-4V) Alloy with Nano SiC and the micro structural changes. Also the tensile behaviour is compared with the ordinary Titanium Alloy.