选区激光熔化 <strong><i>γ'</i></strong> 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

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2 选区激光熔化CM247LC高强镍基高温合金典型的裂纹形貌^[22]

Fig.2 Typical cracking morphologies in selective laser melted CM247LC high-strength nickel-based superalloy (Red rectangle regions indicate the enlarged regions)^[22]
(a₁-a₃) solidification cracks (b₁-b₃) liquidation cracks (c₁-c₃) solid cracks