在冷却和 Ni-10 百分比 Cu-10 percentFe-10 百分比公司第四级的合金的快速的团结下面的高度被电磁的悬浮和玻璃 fluxing 技术完成。在 276 K (0.16TL ) 冷却下面的最大值在实验被获得。所有团结的样品决心是 alpha-Ni 由 DSC 的单相的稳固的答案热分析和 X 光检查衍射分析。一种著名软件压缩工具固体答案阶段的微观结构随的增加从树突转到 equiaxed 谷物在冷却下面,由谷物精炼效果伴随了。什么时候在冷却下面很大,套住效果的溶质变得相当重要并且微分离被压制。一种著名软件压缩工具树突生长速度的试验性的测量显示它增加与在根据关系冷却下面, V=8X10~(-2) X 三角洲 T~(1.2 ) 。
The high undercooling and rapid solidification of Ni-10%Cu-10%Fe-10%Co quaternary alloy were achieved by electromagnetic levitation and glass fluxing techniques. The maximum undercooling of 276 K (0.16TL) was obtained in the experiments. All the solidified samples are determined to be α-Ni single-phase solid solutions by DSC thermal analysis and X-ray diffraction analysis. The microstructure of the α-Ni solid solution phase transfers from dendrite to equiaxed grain with an increase in undercooling, accompanied by the grain refinement effect. When the undercooling is very large, the solute trapping effect becomes quite significant and the microsegregation is suppressed. The experimental measurement of α-Ni dendrite growth velocity indicates that it increases with undercooling according to the relation, V=8×10^-2×△T^1.2.