High temperature behavior of Graphite in comparison with HSLA Steel of Aerospace Grade and Aluminum Alloys for Aerospace Application

Abstract

High strength and low alloy (HSLA) steel which is also known as structural steel and Aluminum Alloys such as 6xxx, 7xxx and 2xxx series has already been used for structural application in aerospace industry. They show very good mechanical properties at low temperatures but their strength start to decrease at high temperature. To increase the service life at elevated temperature, there is required a material which can hold at elevated temperature and its property do not decrease such as HSLA steel and Aluminum Alloys, for such requirement, C-C composite (graphite) system in combination with HSLA Steel and Aluminum Alloys can be used which can bear high temperature and also show very good specific strength at elevated temperatures. This project includes the study and investigation of behavior of the three systems of material (HSLA steel, Aluminum alloys and C-C composite (graphite)) and comparing high temperature behavior and properties of C-C composite (graphite) with the HSLA steel and aluminum alloys system