FURTHER OBSERVATIONS ON DENDRITIC GROWTH IN METALS
FURTHER OBSERVATIONS ON DENDRITIC GROWTH IN METALS
复制标题
DOI：
10.1139/p52-047
复制
发表时间：
1952-09
影响因子：
1.2
通讯作者：
F. Weinberg;B. Chalmers
中科院分区：
文献类型：
--
作者：
F. Weinberg;B. Chalmers
使用单晶倾析技术，枝晶生长方向已被确定为高纯锡和锌晶体取向的函数。报告了铅中枝晶生长速率以及不同过冷量下铅晶体枝晶行之间的间距的测量结果。枝晶柄的初始形成似乎与在暴露的固液界面上观察到的细胞结构有关。提出了枝晶生长的机制，并与实验观察结果进行了比较。结果表明，枝晶生长仅发生在凝固的初始部分。其余部分是固液界面的非枝晶推进以及现有分支的一些增厚的结果。
The direction of dendrite growth has been determined as a function of crystallographic orientation for high purity tin and zinc, using a single crystal decanting technique. Measurements are reported on the rate of dendrite growth in lead, and the spacing between dendrite rows of a lead crystal for varying amounts of supercooling. The initial formation of dendrite stalks appears related to a cell structure observed on the exposed solid liquid interface.A mechanism of dendrite growth is advanced and compared with the experimental observations. It is shown that dendritic growth occurs only during the initial part of solidification. The remainder is a result of the nondendritic advance of a solid liquid interface with some thickening of the existing branches.