Fe-C合金熔体中氮的溶解行为研究  

STUDY ON SOLVING ACTION OF NITROGEN IN MELTING Fe-C ALLOY

作　　者：张亚召[1] 胡晓军[1] 平东平 周国治[1] Zhang Yazhao Hu Xiaojun Ping Dongping Zhou Guozhi(National Key Laboratory for New Technology in Iron and Steel Metallurgy, Beijing University of Science and Technology, Beijing, 100083)

机构地区：[1]北京科技大学钢铁冶金新技术国家重点实验室,北京100083

出　　处：《河北冶金》2017年第1期15-19,共5页Hebei Metallurgy

基　　金：国家自然科学基金项目(51474019)

摘　　要：介绍了钢液中氮溶解行为的传统研究方法和新的氮同位素交换技术。基于后者重新设计了实验装置,推导出了Fe-C体系中氮的溶解度计算公式。对该体系氮溶解过程中氮分压、温度、吹氮速率和碳含量的影响进行了热力学和动力学的分析。研究结果认为,氮分压的增大、温度的升高、吹氮速率的提高以及碳含量的降低都能提高氮的溶解速率,促进氮的溶解。It is introduced the traditional method and new nitrogen isotope exchanging technique to research the nitrogen solving action in steel liquid. Based on the latter, the experiment device is designed again, the calculation formula for nitrogen solubility in Fe - C system is derived out. The influence of nitrogen partial pressure, temperature, nitrogen blowing speed and carbon content in nitrogen solving procedure in this system is analyzed in thermodynamics. It is considered that the nitrogen solving speed can be raised with increasing nitrogen partial pressure, raising temperature, nitrogen blowing faster and reducing carbon content.

关 键 词：Fe—C合金 氮溶解度 氮同位素交换技术 氮分压 温度 碳含量 吹氮速率 

分 类 号：TG142.3[一般工业技术—材料科学与工程]