Xe-ion-irradiation-induced structural transitions and elemental diffusion in high-entropy alloy and nitride thin-film multilayers
نویسندگان
چکیده
The study aims to understand the irradiation behavior of multilayer coatings composed high-entropy materials. Here, we report structural stability and elemental segregation TiNbZrTa/CrFeCoNi metallic nitride under 3-MeV Xe20+ ion-irradiation at room temperature 500 °C, respectively. Transmission electron microscopy analysis shows that microstructure nanocrystalline CrFeCoNi high-entropy-alloy sublayers are not stable readily transforms into amorphous state °C and/or conditions. distribution, acquired by energy-dispersive X-ray spectroscopy scanning transmission mode, preferential diffusion Co Ni TiNbZrTa sublayers, while Fe Cr preferentially remain within previous sublayers. TiNbZrTaN/CrFeCoNiNx multilayers exhibit a higher crystallinity as well resistance high-temperature conditions than their counterparts. These findings explained atomic size differences, difference in Gibbs free energy mixing system, interstitial-solute-induced chemical heterogeneity. Our thus provide design strategy high entropy for nuclear fuel cladding.
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ژورنال
عنوان ژورنال: Materials & Design
سال: 2022
ISSN: ['1873-4197', '0264-1275']
DOI: https://doi.org/10.1016/j.matdes.2022.110749