高W高Ta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9 815℃、460 MPa蠕变断裂后FGH4098和GNPM01合金变形组织的位错亚结构

Fig.9 STEM-annular bright field (ABF) images of dislocation substructures close to [001] zone axis (a, b) and STEM-HAADF images of dislocation substructures close to [011] zone axis (c, d) in FGH4098 (a, c) and GNPM01 (b, d) alloys after creep rupture at 815oC and 460 MPa (Inset in Fig.9c shows the thickness of the microtwin in FGH4098 alloy. SSF—superlattice stacking fault)