|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||High Entropy Alloys VIII
||Friction Stir Processing: A Microstructural Modification Technique for Complex Concentrated Alloys
||Anumat Sittiho, Jadzia Graves, Madhumanti Bhattacharyya, Indrajit Charit, Rajiv S. Mishra
|On-Site Speaker (Planned)
Complex concentrated alloys (CCAs) are a generic term used for a large group of metallic alloys containing multiple principal elements. More well known high entropy alloys (HEAs) are a subset of CCAs. CCAs often contain multi-phase microstructures with unique properties such as high strength-ductility combination, corrosion/oxidation resistance and wear resistance among others. In this work, friction stir processing (FSP) was applied to a CCA (Fe42Mn28Co10Cr15Si5) to study its transformation-induced plasticity (TRIP) characteristics. Microstructures of base metal (BM) and stir zone (SZ) were examined by optical microscopy, scanning electron microscopy and transmission electron microscopy. Mechanical properties of the BM and SZ of the CCA were evaluated using Vickers microhardness testing. FSP was found to increase microhardness from 231 to 273 HV0.5, because of the refined grain size and formation of more HCP-based second phases through a stress-induced transformation within the SZ.
||Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume