ABSTRACT
Inconel-100, a Ni-Co-Cr based superalloy can serve as viable material for jet engine and gas turbine components. These alloys can be prepared either by cast or powder metallurgy (PM). Powder processed alloys provide high structural uniformity, high strength, and toughness that are suitable for engine components operating at intermediate temperature. Linear friction welding (LFW) is a solid-state welding method being used mainly because of high homogeneous weld necessary for integrally bladed disc (blisk) assemblies in the aircraft engine industry. The influence of process parameters, such as oscillating frequency, friction pressure, friction time, forging pressure and forging time, are to optimized. For sound welds, the present investigation attempts to optimize the aforesaid parameters for the linear friction welding of casted nickel superalloy. The study was performed using optical microscope (OM), scanning electron microscope (SEM) to evaluate the welded specimen’s microhardness and the tensile strength of the joints as per the ASTM standards.
