By analyzing the forming condition of D-type graphite cast iron, the paper describes the influence of trace alloy elements on the structure and property of D-type graphite cast iron.
通过对D型石墨铸铁认识过程和形成条件的分析，阐述了微量合金元素对D型石墨铸铁的组织和性能的影响，对于提高铸铁的性能具有一定的指导价值。
It was showed by experiment that re and RE-containing inoculant could effectively eliminate the harmful effects of trace elements, and improve the structure and properties of cast iron.
试验表明：稀土及其复合孕育剂能有效地消除微量元素的危害，改善铸铁的组织和性能。
Reasonable alloy elements could improve mechanical properties of the Bainite ductile cast iron.
合理加入合金元素有利于提高贝氏体球铁的性能。
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