About this Abstract |
Meeting |
MS&T24: Materials Science & Technology
|
Symposium
|
Computational Materials for Qualification and Certification
|
Presentation Title |
Quantifying Microstructure Evolution of LPBF Ni-Alloy Under High Temperatures Exposure Through Computer Vision |
Author(s) |
Yu-Tsen Yi, Junwon Seo, Nicholas Lamprinakos, Anthony Rollett |
On-Site Speaker (Planned) |
Yu-Tsen Yi |
Abstract Scope |
Haynes 282 (H282) is a nickel-based superalloy renowned for its superior creep resistance, rendering it exceptionally suitable for high-temperature applications. However, the microstructural and material property evolution at temperatures surpassing the recommended threshold of approximately 800°C has not been thoroughly explored. This study investigates the microstructural behavior of H282 fabricated using Laser Powder Bed Fusion (LPBF) under severe thermal conditions, reaching up to 1000°C, tailored for methane self-oxidation applications. A grain segmentation pipeline utilizing computer vision techniques was developed to expedite the analysis of grain morphology evolution. This pipeline rapidly segments and quantifies grain size and shape distribution from Scanning Electron Microscope (SEM) images, and the robustness of this method is validated through comparisons with Electron Backscatter Diffraction (EBSD) maps. This study will also encompass the size distribution of secondary phase precipitates, given their significant impact on creep properties. |