WTa型粉末高温合金的蠕变性能及溶质原子偏聚
白佳铭, 刘建涛, 贾建, 张义文

Creep Properties and Solute Atomic Segregation of High-W and High-Ta Type Powder Metallurgy Superalloy
BAI Jiaming, LIU Jiantao, JIA Jian, ZHANG Yiwen
图5 FGH4098和GNPM01合金在650℃、980 MPa蠕变断裂后的位错亚结构
Fig.5 Dislocation substructures of FGH4098 and GNPM01 alloys after creep rupture at 650oC and 980 MPa
(a) TEM bright field (TEM-BF) image and SAED pattern (inset) of FGH4098 alloy (MT—microtwin, BD—beam direction)
(b) TEM-BF image and SAED pattern (inset) of GNPM01 alloy
(c) high-angle annular dark field (HAADF) image of GNPM01 alloy (left) and geometric phase analysis (right) (Superlattice extrinsic stacking fault (SESF)-like fault (two-layer complex layer faults (CSF)) was thickened by a Shockley to form three-layer microtwins, as indicated by the arrow)
(d) HRTEM image of MTs in FGH4098 alloy
(e) HAADF image of MTs in GNPM01 alloy