摘要
通过在稀土镁球铁中加入微量元素锡,能有效地获得铸态珠光体球铁,较明显地提高了材料的综合机械性能,同时在不同断面的球铁中,对于稳定珠光体,细化石墨也起到了有益的作用。
By adding trace element-stannum to the rare-earth-magnesium nodular iron. It is possible to obtain effectively the as-cast pearlite ductile iron and to obviously enhance comprehensiue mechanical properties of the material. Atthe same time, it can also improve stabilization of pearlite and the fining ofpherical graphite of nodular iron various sections.
关键词
球铁
微量元素
锡
组织
性能
as-east ductile iron
stabilizing pearlite
fracture toughness
