单晶高温合金表面缺陷焊接修复的研究进展
郎振乾, 叶政, 杨健, 黄继华

Research Progress of Repair Technology for Surface Defects of Single Crystal Superalloy
LANG Zhenqian, YE Zheng, YANG Jian, HUANG Jihua
图15 激光熔覆过程中凝固裂纹形成机理示意图[39]
Fig.15 Schematic representation of the solidification cracking mechanism