激光增材修复单晶高温合金的热裂纹形成机制

卢楠楠, 郭以沫, 杨树林, 梁静静, 周亦胄, 孙晓峰, 李金国

Formation Mechanisms of Hot Cracks in Laser Additive Repairing Single Crystal Superalloys

LU Nannan, GUO Yimo, YANG Shulin, LIANG Jingjing, ZHOU Yizhou, SUN Xiaofeng, LI Jinguo

图1 DD432单晶高温合金激光增材薄壁试样的宏观裂纹形貌

Fig.1 Macro-morphology of cracks in the additive manufactured DD432 single crystal (SX) superalloy thinwall specimen