镍基高温合金表面冲击强化机制及应用研究进展

王磊, 刘梦雅, 刘杨, 宋秀, 孟凡强

Research Progress on Surface Impact Strengthening Mechanisms and Application of Nickel-Based Superalloys

WANG Lei, LIU Mengya, LIU Yang, SONG Xiu, MENG Fanqiang

图14 经WLSP处理后IN718合金表面硬化层中γ″/γ界面细节的HRTEM像[52]

Fig.14 HRTEM images of the details of γ″/γ interface in the surface hardened layer of WLSP-treated IN718 superalloy[52] (a, d) HRTEM images of γ″/γ interface (a) and γ″ phase (d) in the surface hardened layer (Insets show fast Fourier transform (FFT) diffraction patterns) (b, e) magnified parts in the red boxes in Fig.14a (b) and Fig.14d (e), showing HRTEM images and corresponding maps of the geometric phase images (GPA) strain component εxx (εxx —x-direction in-plane strain) (c, f) line profiles of strain maps scanned along lines 1, 2, and 3 in Fig.14b (c) and lines 4, 5, and 6 in Fig.14e (f)