Inconel 740H焊接接头不同温度蠕变后 γ′贫化区的形成及其对力学性能的影响

Inconel 740H焊接接头不同温度蠕变后 γ′贫化区的形成及其对力学性能的影响

周任远, 朱丽慧

Formation of γ′-Denuded Zone and Its Effect on the Mechanical Properties of Inconel 740H Welded Joint After Creep at Different Temperatures

ZHOU Renyuan, ZHU Lihui

图5 蠕变前和700 ℃蠕变后(试样700-2) IN 740H焊接接头的TEM像

Fig.5 TEM images of IN 740H welded joints before creep (a, b) and after creep at 700 ^oC (specimen 700-2) (c, d) (Insets in Figs.5a and b show the corresponding SAED patterns and EDS analyses)
(a, c) M₂₃C₆carbides at grain boundaries (b, d) γ′ phase in the grain interiors