摘要
对钢液凝固温度下钛的化合物、Al2O3、MnS等基底与形核相铜元素的二维点阵错配度进行了计算,并对其成为铜元素非均质形核核心的有效性进行了分析。结果表明:基底与形核相的错配度δ越小,越有利于非均质形核。Ti2O3、MnS和Al2O3与铜元素的错配度较小,具有良好的匹配关系,可以作为铜元素形核的质点并促进其异质形核。Ti2O3和MnS是钢中残余铜元素非均质形核的最有效核心;Al2O3为中等有效核心;TiC、TiN为无效核心。
The planar lattice disregistries between residual copper and substrate （compounds of Ti, Al2O3 or MnS） under the solidification temperature of steel were calculated and the validities of heterogeneous nucleation were analyzed. The results show that smaller disregistry between substrate and nucleation phase is more conducive to het- erogeneous nucleation. The disregistry between copper and Ti2O3, Al2O3 or MnS is small and the two have a good matching relationship. They can be used as the particles of nucleation of copper and promote the heterogeneous nu- cleation of copper. Ti2O3 and MnS are the most effective cores for heterogeneous nucleation of residual copper, and Al2O3 is moderately effective, while TiC and TiN are not effective.
出处
《钢铁研究学报》
CAS
CSCD
北大核心
2016年第3期63-66,共4页
Journal of Iron and Steel Research
基金
国家自然科学基金资助项目(51364006)
关键词
铜
二维点阵错配度
非均质形核核心
copper
planar lattice disregistry
core of heterogeneous nucleation
