Data regarding the experimental findings compared with CALPHAD calculations of the AlMo0.5NbTa0.5TiZr refractory high entropy superalloy

Patricia Suárez Ocaño; Leonardo Agudo Jácome; Inmaculada Lopez-Galilea; Reza Darvishi Kamachali; Suzana G Fries

doi:10.1016/j.dib.2022.108858

Data regarding the experimental findings compared with CALPHAD calculations of the AlMo_0.5NbTa_0.5TiZr refractory high entropy superalloy

Data Brief. 2022 Dec 24:46:108858. doi: 10.1016/j.dib.2022.108858. eCollection 2023 Feb.

Authors

Patricia Suárez Ocaño¹, Leonardo Agudo Jácome¹, Inmaculada Lopez-Galilea², Reza Darvishi Kamachali¹, Suzana G Fries³

Affiliations

¹ Department for Materials Engineering, Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, Berlin 12205, Germany.
² Institute for Materials, Ruhr-University Bochum, Universitätsstr. 150, Bochum 44801, Germany.
³ Materials Research Department (MRD), Ruhr-University Bochum, Universitätsstr. 150, Bochum 44801, Germany.

Abstract

This contribution contains the raw data used to compare experimental results with thermodynamic calculations using the CALPHAD method, which is related to the research article "The AlMo_0.5NbTa_0.5TiZr refractory high entropy superalloy: experimental findings and comparison with calculations using the CALPHAD method" [1], and therefore this article can be used as a basis for interpreting the data contained therein. The AlMo_0.5NbTa_0.5TiZr refractory superalloy was characterized in the cast and annealed condition (1400 °C for 24 h) in order to measure grain size and to identify and measure the size and area fraction of the phases present. The raw data of this article include X-ray diffraction (XRD) measurements, microstructural characterization by scanning and transmission electron microscopy (SEM and TEM), and elemental analysis by energy dispersive X-ray spectroscopy (EDX). XRD includes the determination of phases and the lattice parameters (A2, B2, and hexagonal structure). Microstructural analysis by scanning and transmission electron microscopy includes (1) identification of composition, size, and volume fraction of the present phases and (2) determination of grain size. Based on these experimental data, it is possible to identify similarities and discrepancies with the data calculated using the CALPHAD method for the alloy under study in Ref. [1], which provides the basis for better and more efficient development of reliable databases.

Keywords: Microstructural characterization; Refractory high entropy alloys; Scanning electron microscopy; Transmission electron microscopy.