|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Additive Forming of Components - Tailoring Specific Material Properties in Low Volume Production
||Controlling Microstructure of IN738LC Superalloy during Selective Laser Melting (SLM) Process
||Hossein Meidani, Thomas Etter, Fabian Geiger, Roman Engeli
|On-Site Speaker (Planned)
Selective Laser Melting (SLM) is an additive manufacturing technology, in which complex parts are realized layer-by-layer via melting of powder material. It offers a high degree of freedom for control of local process conditions, and thus the local solidification and resulting microstructure.
In the current work, such possibility is studied for IN738LC superalloy by applying a wide range of process parameters.
The observed as-built microstructures, before heat treatment, are analyzed and put into relation with local thermal conditions (i.e. thermal gradient and cooling rate) and the resulting solidification phenomena (e.g. Equiaxed/ cellular/ or planar front growth). Electron Back Scatter Diffraction (EBSD) analysis is performed for in depth analysis of microstructures and the observations are then correlated with the measured Young’s modulus.
A good degree of freedom is observed in local control of the microstructure via adjustment of process parameters, which define the local solidification conditions.
||Planned: A print-only volume