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王雷 , 麻晗 , 李平 , 王晓娇 , 刘文庆
钢铁
研究了Si对高碳钢盘条珠光体相变及钢丝热稳定性的影响.研究表明,Si含量的增加可以明显地提高珠光体相变温度,且在高碳钢中增加相同含量的Si,不同相变温度下盘条硬度的增加值基本保持不变;三维原子探针分析结果表明,在高碳钢中添加一定量的Si可以减小盘条铁素体片层中C原子的偏聚程度,有利于提高C原子分布的均匀性;同时Si可以明显地提高渗碳体片层的球化温度,有利于钢丝热稳定性的提高.
关键词: Si合金化 , 热稳定性 , 偏聚 , 珠光体相变
X.J. Liu(Department of Materials Science and Engineering , Guangdong Industrial University , Guangzhou 510643 , China.)
金属学报(英文版)
In this paper a concept of "leading probability" is presented. The difference in the leading probability between ferrite and cementite depends mainly upon the difference between their driving forces at the beginning of precipitation. The results of theromdynamic calculations showed that the leading probability of cementite increased with the increase of carbon concentration of austenite, and the decrease in transformation temperature was favourable to cementite's being the leading nucleus during pearlite transformation.
关键词: leading phase , null , null
