吴化,姜颖

• 1:长春工业大学先进结构材料教育部重点实验室

摘要(Abstract)：

通过金相显微镜、透射电镜、X射线仪以及力学性能测试等对自行设计的20MnSi钢的强韧化机制进行研究。结果表明试验钢性能取决于钢组织中原奥氏体晶粒的细化、弥散质点V(CN)的析出、珠光体片间距的减小和渗碳体片的变薄、以及珠光体数量的减少;此外,控轧控冷为20MnSi钢组织转变创造了热力学和动力学上的特殊条件,在铁素体基体上析出了细小且相互交错分布的针状铁素体,与平衡相铁素体相比较,它的形貌和结构特点对铁素体晶粒的塑性变形和微裂纹的扩展都会造成阻碍,因此,能够较好的改善钢的强韧性。

关键词(KeyWords)： V微合金化;控轧控冷工艺;细晶强化;针状铁素体

Abstract:

Keywords:

基金项目(Foundation): 吉林省科技发展计划项目(20100330)

作者(Author): 吴化,姜颖

DOI: 10.13289/j.issn.1009-6264.2013.07.026

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