HRB500E钢中第二相VC的异质形核分析与晶粒细化

材料导报

2020, Vol. 34

Issue (Z1): 436-439

金属与金属基复合材料

HRB500E钢中第二相VC的异质形核分析与晶粒细化

陈龙海^1,2, 李长荣^1,2, 黎志英^1,2, 李正嵩³, 刘占林³

1 贵州大学材料与冶金学院,贵阳 550025;
2 贵州省冶金工程与过程节能重点实验室,贵阳 550025;
3 首钢水城钢铁(集团)有限责任公司,六盘水 553000

Heterogeneous Nucleation Analysis and Grain Refinement of Second Phase VC inHRB500E Steel

CHEN Longhai^1,2, LI Changrong^1,2, LI Zhiying^1,2, LI Zhengsong³, LIU Zhanlin³

1 College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China;
2 Guizhou Province Key Laboratory for Metallurgical Engineering and Process Energy Saving, Guiyang 550025, China;
3 Shougang Shuicheng Iron and Steel (Group) Co., Ltd., Liupanshui 553000, China

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摘要钢液凝固时,碳化钒作为钢液中铁素体或奥氏体的形核基底相,促进了钢液的非均质形核,并且起到细化凝固组织晶粒的作用。基于二维错配度理论计算碳化钒为基底的化合物对钢液非均匀形核能力的促进作用,通过热力学计算出碳化钒在不同温度的固溶量,采用扫描电子显微镜(SEM)对金属组织进行分析,验证了以碳化钒为基底的化合物对钢液凝固组织的细化作用。

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关键词: 钢液凝固碳化钒奥氏体非均质形核

Abstract: Vanadium carbide acts as the nucleation base phase of ferrite or austenite in molten steel during solidification, which promotes the heteroge-neous nucleation of molten steel and refines the grain size of solidified structure. Based on the two-dimensional mismatch theory, the promotion of vanadium carbide compounds on the non-uniform nucleation ability of molten steel was calculated. The solid solution of vanadium carbide at different temperatures was calculated by thermodynamics. The refinement effect of vanadium carbide compounds on the solidification structure of molten steel was verified by scanning electron microscope (SEM) analysis.

Key words: molten steel solidification vanadium carbide austenite heterogeneous nucleation

发布日期: 2020-07-01

ZTFLH:

TF701

基金资助: 国家自然科学基金(51864013);黔科合平台人才([2018]5781号)

作者简介: 陈龙海,硕士研究生,研究方向为冶金新工艺与新理论,发表论文1篇,全国大学生冶金科技竞赛二等奖;李长荣,贵州大学教授(二级),硕士研究生导师,2005年至今在贵州大学材料与冶金学院任教。在国内外学术期刊上发表论文40余篇,其团队主要研究方向包括:冶金新工艺与新理论;功能材料;新型汽车用钢的开发;主持国家自然科学基金项目1项,贵州省科技厅计划类项目1项,贵州省科技厅工业攻关2项,贵州省科技厅社发攻关项目1项;重要横向课题3项。获得贵州省科学技术进步奖二等奖(第一获奖人),获得中央组织部颁发北京科技大学冶金与生态学院,中组部“西部之光”访问学者。

引用本文:

陈龙海, 李长荣, 黎志英, 李正嵩, 刘占林. HRB500E钢中第二相VC的异质形核分析与晶粒细化[J]. 材料导报, 2020, 34(Z1): 436-439.
CHEN Longhai, LI Changrong, LI Zhiying, LI Zhengsong, LIU Zhanlin. Heterogeneous Nucleation Analysis and Grain Refinement of Second Phase VC inHRB500E Steel. Materials Reports, 2020, 34(Z1): 436-439.

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http://www.mater-rep.com/CN/ 或 http://www.mater-rep.com/CN/Y2020/V34/IZ1/436

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