摘要
通过金相显微镜分析及显微硬度的测试研究了20钢的渗碳工艺及力学性能,结果表明:随着渗碳时间的延长,渗碳层的厚度逐渐增加,渗碳过程符合Fick第二定律;经渗碳处理工件表面的显微硬度是未经渗碳处理的2.5倍,达到442.4 HV0.3,显著地提高了20钢表面的强度。
The carburization process and mechanical proprieties of 20 steel were studied by metallo- graphic microscope and microhardness. The results show that the thickness of layer were gradually increasing with the time, carburizing process conforms to the Fick second law. After carburizing treatment the microhardness on the surface of the workpiece is 2.5 times than without carburizing treatment. The microhardness can be up to 442.4 HV. The strength of the surface of 20 steel were improved significantly.
出处
《承德石油高等专科学校学报》
CAS
2017年第4期44-47,共4页
Journal of Chengde Petroleum College
关键词
20钢
渗碳处理
力学性能
显微组织
20 steel
carburizing treatment
mechanical property
microscopic structure
