微量元素对大断面球铁组织与性能的影响  

Influence of Trace Elements on Structure and Properties of Heavy Nodular Iron Castings

作　　者：陈维平[1] 邓宇[1] 柳哲[1] 罗杰[1] 陈永成 李润生 梁锦华 

机构地区：[1]华南理工大学广东省金属新材料制备与成形重点实验室,广东广州510640 [2]佛山中天创展球铁有限公司,广东佛山528313

出　　处：《现代铸铁》2012年第2期15-21,共7页Modern Cast Iron

摘　　要：在实验室条件下,研究了添加一定量的合金A和合金B对φ590 mm×800 mm大断面球铁件组织和性能的影响,结果显示:当合金A的加入量(质量分数)为0.03%时,抑制大断面球铁件中石墨畸变的效果最佳;同时发现:强制冷却能进一步改善大断面球铁件的石墨形态和基体组织。Under the laboratory condition an investigation was conducted on the influence of adding a specific amount of alloy A and alloy B on the structure and properties of the heavy section nodular iron test casting with dimensions of φ590 mm×800 mm.The results showed that when the addition amount of alloy A was of 0.03%（mass fraction）,the best effect of restraining nodule degeneration of heavy section nodular iron casting was obtained.And,at the same time,it was also found that the graphite morphology and the matrix structure could be further improved by forcible cooling.

关 键 词：大断面球铁 微量元素 组织 性能 

分 类 号：TG255[金属学及工艺—铸造]