The metallurgical aspects of weld solidification cracking in Ni-based superalloys (with Ti+Al > 5 mass%) have not been widely investigated thus far. Herein, the susceptibility CM247LC superalloy and its welds with ERNiFeCr-2 filler wire was quantitatively evaluated using a novel modified Varestraint testing method, for successful manufacturing gas turbine blades. It found that brittle temper...

Abstract The susceptibility of nickel-based superalloys to processing-induced crack formation during laser powder-bed additive manufacturing is studied. Twelve different alloys—some existing (heritage) type but also other newly-designed ones—are considered. A strong inter-dependence alloy composition and processability demonstrated. Stereological procedures are developed enable the two dominant...

The rate of solidification affects the microstructure, quality and mechanical properties of the castings. The analysis of heat transfer in centrifugal casting is very complex due to rapid solidification, rotating mould, opaque mould and high temperature. As the grain size is directly depending on the rate of solidification of the casting, based on grain size the rate of solidification of the ce...

Integration of models that capture the complex physics solidification on macro and microstructural scale with flexibility to consider multicomponent materials systems is a significant challenge in modeling additive manufacturing processes. This work aims link process variables, such as energy density, non-equilibrium by integrating simulations thermodynamics diffusion. Temperature histories are...