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

表2 不同冷速下孤立液析碳化物平均直径分布 (quantity percentage / %)

Table 2 Average diameter distributions of isolated primary carbides at different cooling rates

Steel Cooling rate / (oC·min-1) ˃ 40 μm 30-40 μm 20-30 μm 10-20 μm ˂ 10 μm GCr15SiMn 0.1 75 0 0 25 0 1 10 30 30 20 10 10 4.35 13.04 21.74 34.78 26.09 40 0 0 10.81 32.43 56.76 190 0 0 0 1.94 98.06 GCr15SiMn(RE) 0.1 0 0 66.37 33.33 0 1 0 22.22 44.45 33.33 0 10 0 0 8.33 83.34 8.33 40 0 4.35 17.39 21.74 56.52 190 0 0 0 6.93 93.07