| 复合孕育对可锻铸铁组织转变的影响 |
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| 引用本文： | 王树成.复合孕育对可锻铸铁组织转变的影响[J].铸造技术,2007,28(11):1421-1423. |
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| 作者姓名： | 王树成 |
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| 作者单位： | 黑龙江科技学院材料科学与工程学院,黑龙江,哈尔滨,150027 |
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| 摘 要： | 采用稀土硅铁、铋为复合孕育剂，对可锻铸铁进行了孕育处理。利用差热分析法测定了碳化物及珠光体的分解温度，观察了复合孕育可锻铸铁的组织，并阐述了其作用机理。复合孕育可使可锻铸铁的铸态组织细化，降低碳化物和珠光体的分解温度，同时还可改善石墨化效果，保证石墨细小、分布均匀，且呈团絮或团球状形态。
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| 关 键 词： | 可锻铸铁 复合孕育 石墨化 |
| 文章编号： | 1000-8365（2007）11-1421-03 |
| 修稿时间： | 2007-07-30 |
Effect of Compound Inoculation on Microstructure Evolution of Malleable Iron |
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| WANG Shu-cheng.Effect of Compound Inoculation on Microstructure Evolution of Malleable Iron[J].Foundry Technology,2007,28(11):1421-1423. |
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| Authors: | WANG Shu-cheng |
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| Affiliation: | Heilongjiang Institute of Science and Technology, College of Materials Science and Engineering; Harbin 150027, China |
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| Abstract: | The malleable iron was inoculated with compound inoculating agent containing Re-Si-Fe alloy and Bi. The decomposition temperature of carbides and the pearlite transformation of malleable iron were measured by the differential thermal analysis. The microstructure of malleable iron inoculated by the compound inoculating agent are examined and the inoculating mechanism are discussed. Compound inoculation can refine as-cast microstructure of malleable iron, and decrease the decomposition temperature of carbides and pearl ite. It can also improve the graphitizing effect, thus cause fine and uniform distributed graphite with vermicular and nodular shape. |
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| Keywords: | Malleable cast iron Multiple inoculations Graphitizing annealing |
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