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- W4313647316 abstract "Irradiation-induced embrittlement is a critical and common issue for nuclear materials. Here, we find that the structural design of high-entropy alloy (HEA), nanochannel Al0.1CoCrFeNi HEA, not only enhances the irradiation tolerance, but also significantly relieves the irradiation-induced embrittlement. We present a systematic investigation on the irradiation tolerance and the mechanical response of the nanochannel HEA irradiated by 40 keV He+ ions to the fluence of 5 × 1017 ions/cm2 and by 2 MeV Ar+ ions to a fluence of 6 × 1016 ions/cm2. It is uncovered that the nanochannel HEA exhibits better He management ability and radiation damage tolerance than its dense counterpart. Furthermore, nanoindentation tests show that the irradiated nanochannel HEA has a better mechanical response compared with its dense counterpart: (1) Strain rate sensitivity (SRS) exponent (m) of the nanochannel HEA has only a slight decrease compared to the large decrease for the dense HEA; and (2) the SRS exponent (m) of the nanochannel HEA is elevated while that of the dense HEA is consistently decrease after He+ ion irradiation. These results highlight that nanochannel structure with enormous free surface can mitigate the deleterious effects of irradiation as comparing with its dense counterpart, and represents a new promising strategy to design radiation tolerant materials for the advanced nuclear reactor systems." @default.
- W4313647316 created "2023-01-07" @default.
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- W4313647316 date "2023-03-01" @default.
- W4313647316 modified "2023-10-18" @default.
- W4313647316 title "Enhanced radiation tolerance and plasticity in nanochannel Al0.1CoCrFeNi high-entropy alloy" @default.
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- W4313647316 doi "https://doi.org/10.1016/j.mtcomm.2023.105346" @default.
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