|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Additive Manufacturing: Building the Pathway towards Process and Material Qualification
||Microstructures of Nickel-base Superalloy IN100 Fabricated through Scanning Laser Epitaxy
||Amrita Basak, Ranadip Acharya, Suman Das
|On-Site Speaker (Planned)
Nickel-base superalloys are extensively used to produce gas turbine hot-section components as they offer improved creep strength and higher fatigue resistance compared to other alloys due to the presence of precipitate-strengthening phases in the normally face-centered cubic (FCC) structure of the solidified nickel. In this work, the microstructures of the SLE deposited IN100 were investigated using optical imaging, scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), and x-ray diffraction (XRD). SEM investigations showed the presence of fine /γ′ phases, eutectics, and carbides in the deposit region. EDS analysis showed the carbides to be Ti-rich. XRD investigation revealed the presence of mixed phases in the deposit region. XRD was also used to analyze the residual stresses in the deposit region the deposit region showed a similar order of residual stresses compared to the substrate region. This work is sponsored by the Office of Naval Research through grant N00014-14-1-0658.
||Planned: Supplemental Proceedings volume