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研究了铈在低硫([S]<50ppm)16Mn钢中的物理化学行为,并测定了钢中铈的固溶量。少量铈仍有脱氧、脱硫、控制夹杂形态、细化晶粒等作用。钢中加入铈后生成铈夹杂物的顺序为CeAlO_3、Ce_2O_2S、Ce_2O_3、Ce_XS_Y。当Ce/S=1.90时,钢中MnS夹杂完全被铈夹杂物取代,钢呈现出最佳冲击性能。在Cewt％=0.002～0.0065范围内,用ICP光谱直接测定铈固溶量约为4ppm。
The physico-chemical behavior of cerium in 16Mn steel with low sulfur ([S] <50ppm) was investigated and the amount of cerium dissolved in the steel was measured. A small amount of cerium still deoxygenation, desulfurization, inclusions control morphology, grain refinement and so on. The order of cerium inclusions after adding cerium to the steel is CeAlO 3, Ce 2 O 2 S, Ce 2 O 3, Ce XS Y. When Ce / S = 1.90, MnS inclusions in the steel were completely replaced by cerium inclusions, and the steel exhibited the best impact properties. In the range of Cewt% = 0.002 ~ 0.0065, the direct determination of the cerium solid solution amount by ICP spectroscopy is about 4 ppm.