Influence of RE Modifier on As-cast Grain Refinement of Super-low Carbon Cast Steel

Mei Zhi  Wan Tianmin  Lou Dechun

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Influence of RE Modifier on As-cast Grain Refinement of Super-low Carbon Cast Steel
Issue 2, Pages: 3-4(2002)
Published： 2002 ，
DOI：

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[1]梅志,,,,,,,,,,万天敏,,,,,,,,,,娄德春.稀土变质剂对超低碳钢铸态晶粒细化的研究[J].特种铸造及有色合金,2002(02):3-4+3.

Mei Zhi Wan Tianmin Lou Dechun. Influence of RE Modifier on As-cast Grain Refinement of Super-low Carbon Cast Steel. [J]. Special Casting & Nonferrous Alloys (2):3-4(2002)
[1]梅志,,,,,,,,,,万天敏,,,,,,,,,,娄德春.稀土变质剂对超低碳钢铸态晶粒细化的研究[J].特种铸造及有色合金,2002(02):3-4+3. DOI：

Mei Zhi Wan Tianmin Lou Dechun. Influence of RE Modifier on As-cast Grain Refinement of Super-low Carbon Cast Steel. [J]. Special Casting & Nonferrous Alloys (2):3-4(2002) DOI：

摘要

研究了稀土变质剂对超低碳铸钢晶粒尺寸的影响。结果表明

变质处理后超低碳铸钢中形成大量的高熔点化合物

电子探针分析表明其组成主要为稀土氧化物Ce2 O3 。这些高熔点化合物作为非均匀形核核心

增加了液固相变形核位置

使铸态晶粒尺寸明显减小

材料屈服强度显著提高。

Abstract

Influence of RE modifier on as cast grain size of super low carbon cast steel was studied. The results showed that a great deal of high melting point compound were formed in RE treated super low carbon cast steel. EPMA analysis showed that the compound is mainly composed of Ce 2O 3 served as nuclei for heterogeneous nucleation so as to refine grain size obviously and in turn raise greatly the yield strength of the steel.