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材料工程  2016, Vol. 44 Issue (9): 38-43    DOI: 10.11868/j.issn.1001-4381.2016.09.006
  材料与工艺 本期目录 | 过刊浏览 | 高级检索 |
CGO硅钢初次再结晶组织及织构演变规律
孙强, 李志超, 米振莉, 党宁
北京科技大学 冶金工程研究院, 北京 100083
Microstructure and Texture Evolution in Primary Recrystallization of CGO Silicon Steel
SUN Qiang, LI Zhi-chao, MI Zhen-li, DANG Ning
Engineering Research Institute, University of Science and Technology Beijing, Beijing 100083, China
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摘要 对3%(质量分数)Si CGO硅钢冷轧板进行初次再结晶退火实验,设置不同的退火保温时间,将退火后的样品分别使用OM,TEM及EBSD进行分析,观察其微观组织、位错及织构分布,研究CGO硅钢初次再结晶过程中组织及织构的演变规律。结果表明:随着退火保温时间的延长,回复再结晶的程度增加,当保温时间延长至300s时,再结晶基本完成且呈现等轴晶状态,随着保温时间的延长,组织中位错密度降低。初次再结晶退火保温时间对初次再结晶织构分布有影响:随着保温时间的延长,{111}<112>和{110}<112>织构含量不断下降,{111}<110>织构的含量先减少后增加,立方及旋转立方组分基本保持不变,Goss织构组分逐渐增多。当保温时间较短时,晶粒取向差主要为小角度晶界并存在大量亚晶,随着保温时间的延长,大角度晶界逐渐增多。
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孙强
李志超
米振莉
党宁
关键词 CGO钢初次再结晶织构组织    
Abstract:Primary recrystallization annealing was operated in 3%(mass fraction)Si CGO steels. Different annealing holding time was set up in experiments. Microstructure, dislocations and texture distribution were analysed by OM, TEM and EBSD techniques. Evolution of microstructure and texture in primary recrystallization was studied. Results indicate that as the annealing holding time prolongs, recovery and recrystallization occur gradually. When the holding time increases to 300s, recrystallization is almost fully realized and grains are equiaxed. With the extension of holding time, the dislocation density decreases. Primary recrystallization texture is affected by holding time. As the holding time extends, {111}<112> texture and {110}<112> texture are weakened and Goss texture is strengthened. {111}<110> texture is reduced firstly and then increases. The intensity of cube texture and rotated cube texture is stable. When holding time is short, grains are dominated by small angle grain boundaries with the existence of a large amount of subgrains. As the holding time prolongs, large angle grain boundaries increase.
Key wordsCGO steel    primary recrystallization    texture    microstructure
收稿日期: 2015-08-17      出版日期: 2016-09-27
中图分类号:  TG142.1  
通讯作者: 李志超(1981-),男,博士后,从事钢铁材料方面的研究,联系地址:北京市海淀区学院路30号北京科技大学科技楼703室(100083),E-mail:lizhichao1225@163.com     E-mail: lizhichao1225@163.com
引用本文:   
孙强, 李志超, 米振莉, 党宁. CGO硅钢初次再结晶组织及织构演变规律[J]. 材料工程, 2016, 44(9): 38-43.
SUN Qiang, LI Zhi-chao, MI Zhen-li, DANG Ning. Microstructure and Texture Evolution in Primary Recrystallization of CGO Silicon Steel. Journal of Materials Engineering, 2016, 44(9): 38-43.
链接本文:  
http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2016.09.006      或      http://jme.biam.ac.cn/CN/Y2016/V44/I9/38
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