Analysis of The Mechanical Properties of Inconel 718

Abstract

Super alloys appear as indispensable materials in areas where engineering alloys are used today. What makes these alloys indispensable is that other engineering alloys cannot show the desired mechanical properties under the desired temperature conditions. Especially nickel-based super alloys have become indispensable materials for the aviation industry. While most of the engineering alloys exhibit poor resistance and poor creep behavior at high temperatures, nickel-based super alloys show good strength and good creep behavior even at high temperatures (up to about 650 °C). One of the biggest reasons for the production of the turbine blades in the front of the aircraft engines from nickel-based super alloys is good resistance even in variable temperature conditions (air temperature is around -50 °C when the aircraft is 11 km above the ground and 25 °C at sea level), toughness and good creep properties. While the Inconel 718 alloy gives these strength properties, precipitation hardening mechanism is utilized. This study was made to show how Inconel 718 exhibits mechanical behavior under desired temperature conditions, and to indicate which mechanisms it utilizes while exhibiting these properties, turbine blade design was made in student version of SIEMENS SOLID EDGE. In addition, this design has been analyzed in the ANSYS student version.