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Effects of Rare Earth and Alkaline Earth on Spheroidizing of Eutectic Carbides in Low Tungsten White Cast Iron

机译：稀土和碱土金属对低钨白口铸铁中共晶碳化物球化的影响

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Tungsten Alloy White Cast Iron(TAWCI) has great brittleness and narrow application scope. The influences of Rare earth element(Ce) and alkaline earth elements (K, Na) on the microstructures and performances of TAWCI were researched, and the idea estimating Spheroidizing effect of carbides using Circular Degree (C. D) were put forward. The result shows that eutectics carbide turns into sphericity from network after modification, and carbide is refined and uniformly distributed and the C. D of eutectic carbide increases. The mechanism of carbide Spheroidizing was analyzed. The impact toughness and wear resistance of TAWCI obviously improve with the rise of C. D of carbides. The service life of modified TAWCI roll is 35 % higher than that of high chromium cast iron roll, and its production cost is reduced by 25 %.

机译：钨合金白口铸铁（TAWCI）脆性大，适用范围窄。研究了稀土元素（Ce）和碱土元素（K，Na）对TAWCI组织和性能的影响，提出了用圆度（C. D）估算碳化物球化效果的思路。结果表明，共晶碳化物经过改性后由网状转变为球形，碳化物细化并均匀分布，共晶碳化物的C.D增加。分析了碳化物球化的机理。随着碳化物C.D的升高，TAWCI的冲击韧性和耐磨性明显提高。改进的TAWCI轧辊的使用寿命比高铬铸铁轧辊的使用寿命高35％，生产成本降低了25％。

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来源
《Journal of Rare Earths》|2004年|P.68-72|共5页
会议地点 Yangzhou(CN)
作者
Fu Hanguang; Zou Dening;
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作者单位

Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China;

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会议组织
原文格式 PDF
正文语种 eng
中图分类稀土元素和分散元素;
关键词
tungsten alloy white cast iron; carbide; spheroidizing; modification; rare earths;

机译：钨合金白口铸铁；碳化物；球化；改性；稀土;

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1. Eutectic Modification in a Low-Chromium White Cast Iron by a Mixture of Titanium, Rare Earths, and Bismuth: Part II. Effect on the Wear Behavior [J] . A. Bedolla-Jacuinde, S.L. Aguilar, C. Maldonado Journal of Materials Engineering and Performance . 2005,第3期

机译：低铬白口铸铁中钛，稀土和铋的混合物的共晶改性：第二部分。对磨损行为的影响
2. Eutectic Modification in a Low-Chromium White Cast Iron by a Mixture of Titanium, Rare Earths, and Bismuth: I. Effect on Microstructure [J] . A. Bedolla-Jacuinde, S.L. Aguilar, B. Hernandez Journal of Materials Engineering and Performance . 2005,第2期

机译：钛，稀土和铋的混合物在低铬白口铸铁中的共晶改性：I.对微观结构的影响
3. Eutectic modification in a low-chromium white cast iron by a mixture of titanium, rare earths, and bismuth: Part II. effect on the wear behavior [J] . A. Bedolla-Jacuinde, S. L. Aguilar, C. Maldonado Journal of Materials Engineering and Performance . 2005,第3期

机译：低铬白口铸铁中钛，稀土和铋的混合物的共晶改性：第二部分。对磨损行为的影响
4. Effects of Rare Earth and Alkaline Earth on Spheroidizing of Eutectic Carbides in Low Tungsten White Cast Iron [C] . Fu Hanguang, Zou Dening, Chinese Society of Rare Earths International Conference on Rare Earth Ceramics and Glass . 2004

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Effects of Rare Earth and Alkaline Earth on Spheroidizing of Eutectic Carbides in Low Tungsten White Cast Iron

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