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Meeting TMS Specialty Congress 2025
Symposium 8th World Congress on Integrated Computational Materials Engineering (ICME 2025)
Presentation Title Microstructures and Properties of AlCrFeMnV, AlCrFeTiV, and AlCrMnTiV High-Entropy Alloys
Author(s) Keith E. Knipling, Patrick Callahan
On-Site Speaker (Planned) Keith E. Knipling
Abstract Scope A series of high-entropy alloys (HEAs) containing AlCrFeMnV, AlCrFeTiV, and AlCrMnTiV have been designed using a combination of thermodynamic prediction by Thermo-Calc and by experimental observation of the microstructure and phases present in arc-melted alloys. These alloys are predominantly BCC, with some alloys forming additional minor phases. A particularly intriguing microstructure is observed in the AlCrMnTiV alloy, which contains a high number density of ∼50 nm ordered BCC cuboids that are coherent with the BCC matrix, resembling the well-known γ-γ' microstructures in Ni-based superalloys but in a BCC system. We will correlate the alloy microsctructures, observed using a combination of X-ray diffraction (XRD), scanning and transmission electron microscopy (SEM/TEM), and atom-probe tomography (APT), to the alloys’ mechanical properties measured by Vickers microhardness and nanoindentation.
Proceedings Inclusion? Undecided

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