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10 TiC-GH4975热等静压态和打印态试样经不同温度热压缩后中心裂纹愈合情况

Fig.10 Healing of central cracks in TiC-GH4975 HIPed (a, b) and as-build (c, d) samples after hot compression at 1160 oC (a, c) and 1200 oC (b, d) (Insets in Figs.10a-c show the locally enlarged images)