郑国华,付勇军,杨平,金文旭,毛卫民

• 1:北京科技大学材料科学与工程学院
• 2:鞍钢股份有限公司冷轧硅钢厂

摘要(Abstract)：

利用场发射电镜及能谱仪研究了取向电工钢薄、厚板坯铸锭中不同区域的析出相差异,确定了MnS、AlN及Fe3C的析出顺序和形貌特征。结果表明AlN以先析出的MnS为形核核心,形成粗大微米级的复合析出相。针状Fe3C既可以在复合析出相表面形成也可以在基体中单独出现,主要受冷却速度的影响。在1250℃保温1～2 h,AlN、Fe3C均可完全回溶,但部分MnS仍不回溶。MnS尺寸随着保温时间延长而增大。导致热轧板中沿轧向分布的粗大MnS,减弱了粒子钉扎力。

关键词(KeyWords)： 铸锭;析出;MnS;AlN;回溶

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51071024)

作者(Author): 郑国华,付勇军,杨平,金文旭,毛卫民

DOI: 10.13289/j.issn.1009-6264.2011.08.016

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