|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||High Entropy Alloys VIII
||Microstructural Evolution and Mechanical Properties of Non-equiatomic Fe40Cr25Ni15 Al15Co5 High-entropy Alloy
||Vikas Shivam, Joysurya Basu, Rampada Manna, N. K. Mukhopadhyay
|On-Site Speaker (Planned)
A newly designed composition of non-equiatomic Fe40Cr25Ni15Al15Co5 high-entropy alloy (HEA) was produced by induction melting (IM). The as-cast alloy was found to consist of a two-phase microstructure of BCC and ordered B2 type phases. The structures of these phases were confirmed through X-ray diffraction (XRD) and transmission electron microscopy (TEM) techniques. It was observed that the Ni-Al enriched ordered B2 phase of cuboidal shapes are homogeneously distributed in Fe-Cr rich BCC matrix. The formations of columnar dendrites (width 50-100μm) were identified through optical microscopy (OM) and scanning electron microscopy (SEM). The structural and microstructural stability of the alloy was examined by following the different heat-treatment schedules. Heat-treated samples at different temperatures (below 1273 K) exhibit a similar type of two phase microstructure with columnar dendrites. The alloy had been shown to possess a high compressive yield strength and hardness, i.e. ~1012 MPa & 428±5 HV respectively at room temperature.
||Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume