安治国,毛卫民

• 1:北京科技大学新金属材料国家重点实验室
• 2:北京科技大学材料学系

摘要(Abstract)：

采用场发射扫描电子显微镜观察了取向电工钢中MnS粒子在热变形及不同温度保温后的析出形核行为。以经典的形核率理论为基础,确定了MnS粒子形核析出的更准确潜在位置密度,进而建立了改进的MnS析出形核模型。研究结果表明,MnS粒子主要在晶界和位错上形核,MnS在900℃析出时粒子密度最大。随热变形后保温温度的升高,位错密度及相应的MnS位错形核密度降低。理论计算与实验观察的结果符合良好。

关键词(KeyWords)： 取向电工钢;MnS析出;形核率;形核位置

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(50871015)

作者(Author): 安治国,毛卫民

DOI: 10.13289/j.issn.1009-6264.2010.02.028

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