Surface slip analysis showed that intersection of two sets of slip in adjacent grans occurred in the Hf-free and Hf-containing alloys, but cracking at the columnar grain boundary easily took place in the Hf-free ally. 表面滑移分析表明,含Hf和不含Hf合金中相邻晶粒都出现两组滑移交割,但无Hf合金的柱晶界易出现开裂。
The results indicate that the recrystallization annealing microstructure is equiaxed grains. The grans size are small. 结果显示,再结晶退火态组织为等轴晶粒,晶粒较为规整,晶粒尺寸细小,再结晶状态良好。