渗氮温度对获得抑制剂取向硅钢粒子析出及退火组织的影响

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• 英文论文题名：Effect of nitriding temperature on inhibitor precipitation and annealed microstructure of grain-oriented silicon steel produced by acquired inhibitor method
• 论文作者：王瑞 ; 杨平 ; 刘恭涛
• 英文论文作者：WANG Rui ; YANG Ping ; LIU Gong-tao ; School of Materials Science and Engineering ; University of Science and Technology Beijing
• 年：2016
• 作者机构：北京科技大学材料科学与工程学院;
• 论文关键词：渗氮温度 ; 粒子析出 ; 退火组织 ; 取向硅钢
• 英文论文关键词：nitriding temperature ; particle precipitation ; annealed microstructure ; grain-oriented silicon steel
• 会议召开时间：2016-08-16
• 会议录名称：第十届全国材料科学与图像科技学术会议暨校地企产学研合作创新论坛论文摘要集
• 语种：中文
• 分类号：TG142.1;TG161
• 学会代码：EGTA
• 会议名称：第十届全国材料科学与图像科技学术会议暨校地企产学研合作创新论坛
• 会议地点：中国河南洛阳
• 主办单位：中国体视学学会材料科学分会、中国金属学会材料科学分会
• 学会名称：中国体视学学会
• 页数：7
• 文件大小：3735k
• 原文格式：O
• 会议级别：全国

摘要

通过750℃、850℃、950℃三种渗氮温度制备实验室冶炼渗氮钢,利用SEM、EDS、EBSD等技术分析样品渗氦后粒子析出情况以及初次再结晶组织和高温退火后及升温阶段样品宏观组织,对比研究了渗氮温度对获得抑制剂法制备取向硅钢渗氮后的粒子析出行为及退火组织的影响规律。结果表明,在750℃-850℃的温度范围内,提高渗氮温度能提高渗氮效率,样品N含量、粒子密度及尺寸都会提高,但渗氮温度超过850℃时渗氮效率下降,且出现复合析出粒子,并伴随粒子分解过程;随着渗氮温度升高,样品晶粒尺寸不均匀现象更为显著,且{001}〈120〉织构组分增强;该成分体系下,渗氮温度由750℃升高到950℃过程中,抑制力由足量到不足,毫米级孤岛状小晶粒增多,二次再结晶温度降低。理想渗氮温度应在750℃到850℃之间。
Low temperature slab reheating grain-oriented silicon steel was prepared in laboratory with the nitriding temperature of 750 ℃,850 ℃and 950℃.The effect of nitriding temperature on particle precipitation and annealed microstructure of grain-oriented silicon steel produced by acquired inhibitor method has been studied by the measurements of SEM,EDS and electron back-scatter diffraction(EBSD) technique.The results show that,the efficiency of nitriding increased as the nitriding temperature rising in the range of 750℃ to 850 ℃.The nitrogen content,precipitated particle density and size of nitriding specimens increased.However,the efficiency of nitriding decreased when the nitriding temperature is beyond 850 ℃ and composite precipitation and particle dissolution occurred.Primary recrystallization grain size became obviously inhomogeneity and {001}<120> texture is enhanced as the nitriding temperature increased.When nitriding temperature increased from 750 ℃ to 950 ℃,secondary recrystallization temperature decreased gradually while island grains increased due to the insufficient inhibition in 950℃.The suitable nitriding temperature was between 750 ℃ and 850℃ in mis kind of grain-oriented silicon steel.

引文

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