Understanding properties of a new high gamma' alloy processed in different solidification environment

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High gamma prime Ni-based superalloys are challenging for manufacturing, particularly during solidification. Liburdi Turbine Services (LTS) is pioneering a new avenue to manufacture high gamma prime components with the direct optimization of chemical composition capable to survive solidification while possessing high strain age cracking resistance. LTS and McGill have previously studied two promising alloys, namely 4275 and 4280 while a 3rd generation of alloy, 4280W, has been recently patented and is foreseen to surpass the weldability, ductility and oxidation properties of 4275 and 4280. However, a systematic study must be performed to fully delineate the solidification behavior in rapid to non-equilibrium regimes, the response to heat treatment (HT) and the mechanical performance.The current project between LTS and Prof. Brochu aims to study the processing-properties- microstructure relationships of a newly patented alloys: 4280W. The project includes welding materials characterisation, gas tungsten arc welding, direct energy deposition and laser powder bed fusion, process optimisation, microstructure characterisation and HT response and oxidation, tensile and stress rupture testing. LTS will gain knowledge on the holistic manufacturing flowchart for 4280W leading to the ability to produce parts or perform repair of high gamma prime alloys for their customers.The project will train 1 PhD student and 1 part-time PDF, with the participation of 1 technician.