选区激光熔化 γ' 相强化镍基高温合金裂纹形成机理与抗裂纹设计研究进展

祝国梁, 孔德成, 周文哲, 贺戬, 董安平, 疏达, 孙宝德

Research Progress on the Crack Formation Mechanism and Cracking-Free Design of γ' Phase Strengthened Nickel-Based Superalloys Fabricated by Selective Laser Melting

ZHU Guoliang, KONG Decheng, ZHOU Wenzhe, HE Jian, DONG Anping, SHU Da, SUN Baode

图9 热等静压前后增材制造样品内部裂纹的形貌特征[66]以及样品表面的裂纹缺陷分布情况[55]

Fig.9 Morphological characteristics of cracks in the additive manufacturing samples before (a) and after (b) hot isostatic pressing[66], distribution of crack defects on the surface of the samples before (c) and after (d) hot isostatic pressing (Inset in Fig.9d shows the locally enlarged view)[55]