40CrNi2Mo钢中频淬火后组织和性能的研究
Study on Microstructure and Properties of 40CrNi2Mo Steel After Medium Frequency Quenching
黄晓夏1, 张伟强2, 张世英1, 王 岩1
点击：3007次 下载：0次
作者单位：1. 辽宁工程技术大学 材料科学与工程学院, 辽宁 阜新 123000; 2. 沈阳理工大学 材料科学与工程学院, 辽宁 沈阳110000
中文关键字：40CrNi2Mo钢； 中频淬火； 马氏体
英文关键字：40CrNi2Mo steel; medium frequency induction hardening; martensite
中文摘要：研究了40CrNi2Mo钢经不同工艺热处理后，再对其表面进行中频淬火并测定其组织及性能。结果表明，以调质工艺为基本工艺并对其表面进行中频淬火后，40CrNi2Mo钢表面的组织为均匀细小的马氏体，强度和耐磨性显著提高，心部组织为回火索氏体，并呈弥散分布，塑韧性没有明显下降，从而提高了40CrNi2Mo钢表面的耐磨性、疲劳抗力和承载能力，使40CrNi2Mo钢具有良好的综合力学性能。
英文摘要：The different pre-heat treatment processes for 40CrNi2Mo steel were carried out, then the microstructure and properties of the steel after medium frequency induction hardening were studied. The results show that, after quenching and tempering process, then using medium frequency induction hardening process, the surface of 40CrNi2Mo steel generates uniform and small martensite, the strength and wear resistance significantly increases, the core of circle tracks generates dispersed temperingsorbite, the decrease of plastic and toughness is no significant, which by increases wear resistance, fatigue resistance and load capacity of 40CrNi2Mo steel, and makes it has good comprehensive mechanical properties.