摘要
从凝固界面形态演化的时间相关性和路径相关性的角度,对一次间距问题进行了实验研究,发现了一些新的现象,并由此对一次间距的理论模型和实验研究方法进行了分析讨论。
From a point of view of time-dependent and path-dependent of interface morphology development. the experimental studies of primary spacing in directionally solidified succinomitrile-1.1 wt% ethanol are carried out. It is found that for this model alloy: (1) There exists a maximum primary spacing, the solidlfica tion rate corresponding to the maximum primary spacing is much greater than that corresponding to the transition from cellular to dendritic interface; (2)The dendritic primary spacing can remain constant when the solidification rate has increased times, and cellular spacing is very sensitive to the change of solidification rate.
出处
《航空学报》
EI
CAS
CSCD
北大核心
1992年第7期A377-A380,共4页
Acta Aeronautica et Astronautica Sinica
基金
国家自然科学基金
关键词
定向凝固
界面形态
一次间距
枝晶
directional solidification, interface morphology, primary spacing
