刘飞燕,樊新民

• 1:南京理工大学材料科学与工程系
• 2:南京理工大学材料科学与工程系 江苏南京210094
• 3:江苏南京210094

摘要(Abstract)：

采用高速旋转丝变形工艺对低碳钢表面进行塑性变形,以实现材料的表面纳米化。用光学显微镜、X射线衍射、扫描电子显微镜、透射电子显微镜、显微硬度计和表面粗糙度测量仪等研究塑性变形处理后样品的显微组织及表面性能变化。结果表明:低碳钢经过高速旋转塑性变形处理后,在表面形成厚度为40μm的塑性变形层,最表面层的晶粒尺寸约为16nm,晶粒尺寸沿深度方向不断增大;表层显微硬度比心部基体硬度提高3倍;但表面粗糙度Ra增加到10μm。

关键词(KeyWords)： 表面纳米化;低碳钢;强烈塑性变形;显微组织;显微硬度

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 刘飞燕,樊新民

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