Effect of Carbon Content on the Solubility of Niobium Carbide in Austenite
MI Yong-feng1,CAO Jian-chun1,ZHANG Zheng-yan1,QI Hai-quan1,ZHOU Xiao-long1,YONG Qi-long2
1. Department of Materials and Metallurgy Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China 2. Institute of Structural Materials, Central Iron and Steel Research Institute, Beijing 100081, China
Abstract：Based on thermodynamics, considering the effect of carbon content on the activities of carbon and niobium in austenite, the relationship between solubility product of niobium carbide in austenite of high-carbon steel containing niobium and concentration of carbon was derived. Quantitative analysis of precipitates in high-carbon steel containing carbon with mass percent as 0.75% was conducted using physicochemical phase analysis method. By companion, it is found that the calculated results for the solubility product of niobium carbide are more close to the experiment results, which indicates that the solubility of niobium carbide in austenite is applicable to high carbon steel.
米永峰，曹建春，张正延，亓海全，周晓龙，雍岐龙. 碳含量对钢中碳化铌在奥氏体中固溶度积的影响[J]. 钢铁, 2012, 47(3): 84-88.
MI Yong-feng1,CAO Jian-chun1,ZHANG Zheng-yan1,QI Hai-quan1,ZHOU Xiao-long1,YONG Qi-long2. Effect of Carbon Content on the Solubility of Niobium Carbide in Austenite. Iron and Steel, 2012, 47(3): 84-88.
2012, Vol. 47 
