High-throughput synthesis of Mo-Nb-Ta-W high-entropy alloys via additive manufacturing
By M. Moorehead, K. Bertsch, M. Niezgoda, C. Parkin, Mohamed S. Elbakhshwan, K. Sridharan, Chuan Zhang, Dan Thoma, A. Couet. Materials & Design (1980-2015), 2020
222 citations recorded by the source corpus.
Abstract High-entropy alloys (HEAs) are a class of alloys that can exhibit promising properties including enhanced irradiation resistance, high-temperature strength, and corrosion resistance. However, they exist in a relatively unexplored region of quasi-limitless composition space. Thus, to enable the development of promising compositionally complex alloys, such as HEAs, high-throughput methods are needed. Such high-throughput capabilities are developed and presented in this work. In situ alloying through additive manufacturing was employed to produce arrays of different HEA compositions. Sample arrays were then characterized by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and X-ray diffraction (XRD), all while remaining on the build plate. The top surface of each sample was compositionally homogeneous, as determined by EDS, and each sample exhibited a single-phase, disordered crystal structure, as determined by XRD. CALculation of PHAse Diagrams (CALPHAD) modeling was used to determine the equilibrium phases of each HEA composition at lower temperatures, the results of which were compared with XRD results. Implications of high-throughput synthesis techniques and the coupling of high-throughput characterization and modeling techniques are discussed in the context of alloy development.
Subfields: Biomedical Engineering, Mechanical Engineering
View Paper: https://www.semanticscholar.org/paper/437d365d303567b00c45095981928c6f78275a69
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In Mechanical Engineering
Citations in the corpus
- Recent innovations in laser additive manufacturing of titanium alloys (2024, background): “…such as diffusion multiples, combinatorial thin films, combustion synthesis, and in situ nanotip melting, in-situ alloying AM exhibits the capacity to fabricate 3D bulk samples of freely chosen compositions, achieved through adjustments of the powder-feed rates within the hoppers [164].”