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14 不同温度梯度与凝固速率下的凝固组织[51]
Fig.14 Solidification structure under various temperature gradient and solidification speed