增材制造难变形高温合金GH4975的裂纹形成及其愈合机制

叶献文, 姚志浩, 王洪瑛, 王子成, 张砻耀, 董建新

Crack Formation and Healing Mechanisms in Additively Manufactured Hard-Deformed Ni-Based Superalloy GH4975

YE Xianwen, YAO Zhihao, WANG Hongying, WANG Zicheng, ZHANG Longyao, DONG Jianxin

图3 GH4975和TiC-GH4975打印态试样裂纹形貌的SEM像

Fig.3 SEM images of cracks in as-build GH4975 (a, b) and TiC-GH4975 (c) samples (Fig.3b shows the crack morphology at high magnification)