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6 蠕变前IN 740H焊接接头显微组织的SEM像

Fig.6 SEM images of microstructures of IN 740H welded joint before creep (Inset in Fig.6c shows the corresponding EDS analysis; rectangle in Fig.6c indicates the area where the rod-like γ′ phase is distributed) (a) base metal (b) dendrite in weld metal (c) grain boundaries in weld metal