摘要
为探讨显微硬度与工艺条件之间的关系,利用低温气体多元共渗金属装置对ZG15进行了共渗处理,通过扫描电子显微镜和显微硬度计对渗层的厚度、显微组织及显微硬度进行了研究,并探讨了其渗入机理。结果表明：在铸钢表面形成了以碳化物和氮化物为主的合金渗层,不同工艺条件下渗层显微硬度在300-700 HV变化,认为加热温度和保温时间是形成渗层组织结构和显微硬度的主要影响因素,氧元素在碳、氮共渗过程中起触媒作用。该工艺具有节约电能、节省金属原料、保护环境、效率高,渗层质量好等特点,值得在机械制造业及其它行业推广应用。
To explore the relationship between micro-hardness and the process conditions, Permeation treatment of ZG15 was given by low-temperature gas multipermeation metal installations. Researches on the layer of thickness, microscopy and micro-hardness were explored by scanning electron and micro-hardness equipment, and explore its infiltration principle. The results showed that： on the steel＇s surface, shape alloy layer was taken with carbide and nitride based. Infiltration layer＇s microhardness changed at 300---700 HV under different process conditions. The conclution showed that the heating temperature and holding temperature time were the main factors of layer structure and microhardness. Oxygen playsan catalytic role in the Carbon, Nitrogen permeation. The process has many characteristics： saving energy, saving the metal raw materials, protecting the environment, high efficiency, good layer quality, it can be used in the machinery manufacturing and many other industries.
出处
《铸造技术》
CAS
北大核心
2009年第10期1282-1285,共4页
Foundry Technology
关键词
多元共渗
铸钢
显微硬度
渗层组织
Multi-permeation
Cast steel
Microhardness
Layer organization
