| 塑性加工提高白口铸铁强韧性的电子显微分析 |
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| 引用本文： | 周惠华,吴逸贵,孙爱学.塑性加工提高白口铸铁强韧性的电子显微分析[J].河南科技大学学报(自然科学版),1993(1). |
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| 作者姓名： | 周惠华 吴逸贵 孙爱学 |
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| 作者单位： | 洛阳工学院材料系，洛阳工学院材料系，洛阳工学院材料系 |
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| 摘 要： | 本文介绍利用透射电镜观察塑性加工后,白口铸铁形变、呈复和再结晶过程的组织及亚结构的变化。经研究发现:塑性加工的白口铸铁中共晶碳化物位错滑移、交割并形成位错网络,出现共晶碳化物亚晶块,继而“破碎”并钝化。而基体的位错增殖且晶粒细化,有分布较均匀的粒状碳化物。故此,白口铸铁强韧性有较大提高。
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| 关 键 词： | 白口铁 共晶 碳化物 位错 |
Study of Improving the Strength and Tougheness of White Cast Iron by Plastic Deformation |
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| Zhou Huihua Wu Yigui Sun Aixue.Study of Improving the Strength and Tougheness of White Cast Iron by Plastic Deformation[J].Journal of Henan University of Science & Technology:Natural Science,1993(1). |
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| Authors: | Zhou Huihua Wu Yigui Sun Aixue |
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| Institution: | Departmet of Material Engineering |
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| Abstract: | The microstructure and substructure of white cast iron during recovery and recrystallization were studied with TEM. The results showed: after plastic deformation, the dislocations in eutectic Fe_3C ship, jog and form some dislocation networks. Eutectic Fe_3C subcrystallines occur and crush, passivate. However, proliferation of dislocations in matrix make the crystalline grain finer, and there are Fe_3C grains distribute it homogeneously. So the strength and tougheness of the white cast iron were improved remarkably. |
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| Keywords: | White iron Eutectics Carbides Dislocations |
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