孟利,张茂华,何承绪,毛卫民

• 1:北京科技大学材料科学与工程学院
• 2:北京科技大学新金属材料国家重点实验室

摘要(Abstract)：

利用高分辨扫描电子显微镜观察了Fe-3%Si合金中MnS粒子的分布及经高温退火后的变化,借以探索MnS粒子的统计分析方法及其抑制作用原理。热力学计算与观察结果的对比分析显示,随退火温度的升高不仅出现MnS粒子的溶解行为,也存在粗化现象,但粗化过程并不显著,粒子仍基本保持弥散细小状态,因而可以发挥抑制晶界迁移的作用。MnS粒子的高温溶解是造成其抑制作用弱化的主要原因。分析认为,MnS明显高于基体的比容是造成其难以粗化并保持抑制作用的重要原因。

关键词(KeyWords)： 取向电工钢;MnS粒子;粗化;抑制作用;高温退火

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51171019);; 新金属材料国家重点实验室自主资助课题(2014Z-14);; 国家电网公司科技项目(SGRI-WD-71-13-002)

作者(Author): 孟利,张茂华,何承绪,毛卫民

DOI: 10.13289/j.issn.1009-6264.2015.07.027

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