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4 裂纹源区域组织形貌及取向特征

Fig.4 Morphology and orientation characteristics of the crack initiation region (a) back scattered electron (BSE) image of the crack initiation region (b-d) inverse pole figures (IPFs) along the X (b), Y (c), and Z (d) directions, respectively