|About this Abstract
||10th International Symposium on Superalloy 718 and Derivatives (2023)
||Superalloy 718 and Derivatives
||Characterization of Laser Powder Bed Fusion of Nickel Based Superalloy Haynes 282
||Kameshwaran Swaminathan, Jonas Olsson, Tahira Raza, Joel Andersson, Peter Harlin
|On-Site Speaker (Planned)
Nickel based superalloy Haynes 282 cubes were manufactured using Laser powder bed fusion process with powder layer thickness of 60 and 90 microns to study the effect of Laser Power, Laser Scan Speed and Hatch distance on the melt pool dimensions and porosity. The melt pool dimensions, and porosity were measured at the center of the cubes parallel to the build direction. Variation of melt pool depth and overlap exist within the same cube signifying the scatter present in the process. Laser scan speed was found to be the most significant parameter for porosity and Hatch distance was found to be the most significant parameter affecting the average melt pool overlap depth in the cubes built with 60 microns layer thickness. Interaction of speed and hatch distance was found to be the most significant parameter for porosity and Laser scan speed was the most significant parameter for average melt pool overlap depth in cubes built with 90 microns layer thickness. Comparison of measured responses with individual parameters provide partial trends of melt pool dimensions and porosity. A better trend of the melt pool dimensions and a marginal trend of porosity is obtained on comparison with line and area energy densities. Ratio of maximum length to minimum length of a defect is measured to determine the shape of the defects and averaged to provide insight into the dominant shape of defect for a given set of parameters.
||Definite: At-meeting proceedings