熵-焓协同驱动的高熵合金组织调控与强韧化

吕昭平, 刘雄军, 吴渊, 蒋虽合, 雷智锋

Microstructural Regulation and Strengthening-Toughening of High-Entropy Alloys Driven by Entropy-Enthalpy Synergy

LU Zhaoping, LIU Xiongjun, WU Yuan, JIANG Suihe, LEI Zhifeng

图2 Fe-Co-Ni-Cr-Al-Ti高熵合金中共格纳米析出相的组织结构特征[18]

Fig.2 Microstructural characteristics of coherent nanoprecipitates in the Fe-Co-Ni-Cr-Al-Ti HEA[18] (a, b) bright (a) and dark (b) field TEM images showing the particles distribution (c) high-resolution TEM image showing the interface between one single nano-particle and fcc matrix, with relative fast Fourier transform (FFT) patterns are shown in the left; the atomic arrangement are directly distinguished (d) APT results with two boxes of atom maps with Fe, Co, Cr and Al, Ni, Ti separately and one box with 35%Ni iso-concentration surface showing the outline of particles (e) proximity histogram constructed across the interface between the matrix and precipitates