摘要
铌的析出和固溶对铸坯质量好坏和钢材性能优异具有非常明显的影响,通过计算钢中碳含量、氮含量、铌含量和温度对碳氮化铌固溶的影响,发现钢中碳、氮、铌含量增加,碳氮化铌的全固溶温度升高;氮含量增加,NbN的有效活度增加,固溶铌含量下降;铌含量增加,在温度为800～1100℃范围内,氮化铌的含量增加;碳含量增加,钢中固溶铌降低和铌的化合物增加.随温度升高,固溶铌与总铌含量的比值增加,二者比值位于30%～70%之间.
Effect of precipitation and solid-solution on slab's quality and product's mechanical properties is very important. Based on studying effect of carbon content,nitride content,niobium content and temperature on solid-solution of carbonitride,the following laws were obtained. Firstly,solid-solution temperature will rise when content of carbon,nitride and niobium increases. Secondly,effective activity of NbN goes upwards with increases of content of nitride,and amount of solid-solution of niobium reduces. Quantity of NbN rises with increase of content of niobium from 800 ℃ to 1 100 ℃. The same laws can also be used for effect of carbon content. Niobium ratio between solid-solution amount and total content rises with increase of temperature,the ratio value lies from 30% to 70%.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2009年第S1期194-198,共5页
Journal of University of Science and Technology Beijing
基金
北京市教育委员会共建项目专项资助
关键词
碳氮化物
固溶
铌
析出
carbonitride
solid-solution
niobium
precipitatio
