摘要
提供了非金属夹杂物作为球状石墨非自发形核心的视觉证实。球铁中的非金属夹杂物按其分布有:作为球状石墨核心的夹杂物;被石墨晶体包围的夹杂物;和石墨共生的夹杂物;孤立块状分布在基体中的夹杂物。对球铁性能影响最大的非金属夹杂物是孤立分布的夹杂物。
It is justified by the observed results that non-metallic inclusion can act as the heterogeneous nuclei of nodular graphite in this paper. The non-metallic inclusion of nodular graphite cast iron would be classified as the following distributing types: The nuclei of heterogeneous nucleation, the particles surrounding by graphites, the co-existing ones with graphite and the seperating massive distrbutions. The seperating inclusion in alloy have the most important effects on the mechanical properties of nodular graphite cast iron.
出处
《甘肃工业大学学报》
1993年第4期23-28,共6页
Journal of Gansu University of Technology
关键词
非金属夹杂物
稀土镁球铁
球墨铸铁
nodular graphite cast iron, nodular graphite, non-metallic inclusion, heterogeneous nucleation, rare-earth (RE), nodular treatment
