抗辐照损伤金属基纳米结构材料界面设计及其响应行为的研究进展
刘悦1(), 汤鹏正1, 杨昆明1, 沈一鸣2, 吴中光2, 范同祥1()
Research Progress on the Interface Design and Interface Response of Irradiation Resistant Metal-Based Nanostructured Materials
LIU Yue1(), TANG Pengzheng1, YANG Kunming1, SHEN Yiming2, WU Zhongguang2, FAN Tongxiang1()

图6. 纳米晶304奥氏体不锈钢掺杂La元素后的原子探针和透射电镜表征[58]
(b) a bright-field TEM image and corresponding APT Si atom map of a thin slice (5?nm in thickness) reconstructed volume, with 14 resolved nanograins marked as 1-14, respectively and GBs decorated with La-rich nanoprecipitates (NPs). 1D composition profiles across GB5–6, GB6–7, and GB7–8, as marked by green arrows in the Si map, showing the segregation of Si, La, and O at GBs
(c) a top magnified combined atom map of Si and La from a small reconstructed region with GBs decorated with La-rich NPs, a bottom combined Fe, Si, and La map of a small framed region of a grain containing a La-rich NP defined by iso-surfaces of 2.5%La (atomic fraction) and fine La-rich clusters. The right proxigrams from La-rich NPs in different sizes reveal their compositions of La-rich NPs at GBs and in grain interiors. The particle size (d) of NPs is defined as the equivalent spherical diameter

Fig.6. Correlative atom probe tomography (APT) and transmission electron microscopy (TEM) characterization of nanocrystalline austenitic stainless steel (NC-SS)[58](a) combined and individual element atom maps of the analyzed volume