| 稀土合金对高铬铸铁共晶组织及性能的影响 |
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| 引用本文： | 韩福生,赵娣芳,王兆昌. 稀土合金对高铬铸铁共晶组织及性能的影响[J]. 安徽工学院学报, 1991, 0(2) |
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| 作者姓名： | 韩福生 赵娣芳 王兆昌 |
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| 作者单位： | 安徽工学院，安徽工学院，北京科技大学 |
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| 摘 要： | 高铬铸铁的韧性强烈依赖于枝晶间共晶硅化物的数量与分布。通过定向凝固试样,考察了稀土合金对亚共晶及共晶成分高铬铸铁组织的影响,测定了奥氏体(r)一次臂的横截面积(D_r)、共晶曲域直径(E_w)及碳化物间距(Fs~C—共晶区域中心碳化物间距;Fs~B—共晶区域边界碳化物间距),以及力学性能。结果表明,稀土合金对高铬铸铁的共晶组织有明显的细化作用,对其韧性也有一定的贡献。本文还对稀土的作用机理进行了讨论。
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| 关 键 词： | 高铬铸铁 稀土合金 共晶组织 |
THE EFFECT OF RE ALLOY UPON THE STRUCTURE AND THE PROPERTIES OF HIGH CHROMIUM CAST IRON |
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| Han Fusheng,Zhao Tifang,Wang Chaochang Anhui Institute of Technology Beijing University of Science and Technology. THE EFFECT OF RE ALLOY UPON THE STRUCTURE AND THE PROPERTIES OF HIGH CHROMIUM CAST IRON[J]. , 1991, 0(2) |
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| Authors: | Han Fusheng Zhao Tifang Wang Chaochang Anhui Institute of Technology Beijing University of Science Technology |
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| Affiliation: | Han Fusheng;Zhao Tifang;Wang Chaochang Anhui Institute of Technology Beijing University of Science and Technology |
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| Abstract: | The toughness of high chromium cast iron depends stronglyupon the amount and the distribution of carbides within interdendritic regions.Through unidirectionally solidifying samples, the effect of RE alloy was invest-igated on the eutectic structure of high chromium cast iron with hypoeutecticand eutectic composition. Such variables were measured as the section area ofaustenite dendrite arm (D_r), the diameter of eutectic region (E_w), the spacingof carbides (F_s~C in the centre and F_s~B in the boundary of eutectic region). Itis shown that the RE alloy contributes to the refining of eutectic structure andto the increase of toughness. |
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| Keywords: | high chromium cast iron RE alloy eutectic structure |
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