东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2003, Vol. 24 ›› Issue (4): 377-381.DOI: -

• 论著 • 上一篇    下一篇

原位复合TiC和(TiW)C增强Fe基复合材料

潘卫东;任英磊;邱克强;才庆魁   

  1. 东北大学材料与冶金学院;沈阳工业大学材料科学与工程学院;沈阳工业大学材料科学与工程学院;东北大学材料与冶金学院 辽宁沈阳110004
  • 收稿日期:2013-06-23 修回日期:2013-06-23 出版日期:2003-04-15 发布日期:2013-06-23
  • 通讯作者: Qiu, K.-Q.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目 (5 0 0 710 3 6)

In-Situ synthesis of TiC and (TiW)C reinforced iron matrix composites

Pan, Wei-Dong (1); Ren, Ying-Lei (2); Qiu, Ke-Qiang (2); Cai, Qing-Kui (1)   

  1. (1) Sch. of Mat. and Metall., Northeastern Univ., Shenyang 110004, China; (2) Dept. of Metal Mater. Eng., Shenyang Univ. of Technol., Shenyang 110023, China
  • Received:2013-06-23 Revised:2013-06-23 Online:2003-04-15 Published:2013-06-23
  • Contact: Qiu, K.-Q.
  • About author:-
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摘要： 研究了原位合成 1 0 % (体积分数 )TiC Fe和 (TiW )C Fe复合材料 ,采用扫描电镜分析了复合材料的微观结构 ,利用X射线分析了相组成·结果表明 ,在TiC Fe复合材料中 ,TiC作为惟一的第二相有粒状和条状两种形态·分析认为 ,粒状为先共晶相 ,而条状为共晶·通过用W替代部分Ti,成功地制备了 1 0 % (体积分数 ) (TiW)C Fe复合材料 ,其中 ,(TiW)C作为惟一的第二相比较均匀地分布在Fe基体中 ,其形态大部分呈粒状·在粒状 (TiW)C相中 ,W和Ti呈不均匀分布 ,这种特征与凝固过程中 (TiW)C的形成过程有关·与TiC相比 ,(TiW)C的密度与...

关键词: Fe基复合材料, 组织结构, 碳化物, 强化, 原位生长

Abstract: In-situ synthesis of 10 vol% TiC-Fe and 10 vol% (TiW)C-Fe composites was investigated. The results show that in the TiC-Fe composite, as only second phase, TiC is in two kinds of morphologies, i.e. spherultic and rod-like ones. It is identified that the spherultic TiC is a proeutectic phase and the rod-like one is a eutectic phase. In-situ synthesis of the 10 vol% (TiW)C-Fe composite in liquid iron is feasible. In the composite, the (TiW)C reinforcements are more homogeneously distributed in iron matrix, and most of them are spherultic and the few rod-like. Within the spherultic (TiW)C phase, there is an homogeneous distribution of titanium and tungsten. Its core is rich in titanium, while the periphery rich in tungsten. Such the characteristic microstructure is closely related with its formation during solidification. Comparing with the TiC, the (TiW)C phase has a density matchable for iron melt, which makes it more suitable as in-situ synthesized reinforcements in large size ingots of iron matrix composites.

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