金属/高熵合金纳米多层膜的力学性能及其辐照效应研究进展

张金钰, 屈启蒙, 王亚强, 吴凯, 刘刚, 孙军

Research Progress on Irradiation Effects and Mechanical Properties of Metal/High-Entropy Alloy Nanostructured Multilayers

ZHANG Jinyu, QU Qimeng, WANG Yaqiang, WU Kai, LIU Gang, SUN Jun

图1 组元层厚(h)为10和25 nm的Ni/FeCoCrNi多层膜[27]以及10 nm的Cu/NbMoTaW多层膜[28]的组织及元素分布

Fig.1 Microstructures and element distributions of Ni/FeCoCrNi multilayers with component layer thicknesses (h) of 10 (a, b)[27] and 25 nm (c, d)[27], and Cu/NbMoTaW multilayers with h of 10 nm (e, f)[28] (STEM—scanning transmission electron microscope, HRTEM—high resolution transmission electron microscope, XTEM—X-ray transmission electron microscope, EDX—energy dispersive X-ray spectroscopy, HEA—high-entropy alloy, FFT—fast Fourier transform. The corresponding SAED patterns inserted in Figs.1a, c, and e exhibit different textures of different multilayers) (a) typical STEM image, showing a clearly lamellar structure (b) HRTEM image, showing the coherent interfaces and the morphology of penetrated twins (c) typical XTEM image, showing clearly nanolayered structure (d) corresponding EDX mapping analyses of square area in Fig.1c (e) representative cross-sectional TEM images, showing clearly modulated structure (f) typical HRTEM images (Inset is the corresponding FFT of boxed region, showing the amorphous-like microstructure of the HEA layers)