冷速对高碳铬轴承钢液析碳化物凝固析出机制的影响
李闪闪, 陈云, 巩桐兆, 陈星秋, 傅排先, 李殿中

Effect of Cooling Rate on the Precipitation Mechanism of Primary Carbide During Solidification in High Carbon-Chromium Bearing Steel
LI Shanshan, CHEN Yun, GONG Tongzhao, CHEN Xingqiu, FU Paixian, LI Dianzhong
图11 液析碳化物的形成过程示意图
Fig.11 Schematic of the formation mechanism of primary carbide
(a) nucleation and growth of primary austenite at the early solidification
(b) primary carbides precipitate randomly among the austenite grains after solidification for a while and then grow in size via solute diffusion
(c) austenite grains stop growing and two typical morphologies of carbides form eventually at the end of solidification