Fe-Si 合金における MnS 析出に対する鋼中介在物の影響(鋳造・凝固)

概要

論文の詳細を見る
"In-situ" observation of MnS precipitation in Ce-added and Zr-added Fe-Si alloys was made on cooling using a confocal scanning laser microscope. In Ce-added and Zr-added sample, the temperature at which MnS precipitation started became higher because of the heterogeneous nucleation of MnS on Ce_2S_3 and ZrO_2. By SEM observation, it was found that many MnS precipitates were neighbored on Ce_2S_3 and ZrO_2. But in case of the sample contained much Ce, the temperature at which MnS precipitation started became lower and the amount of MnS precipitates became less. It was because the sulfur was consumed in Ce_2S_3 and the solubility product of manganese and sulfur became small. The number of MnS precipitates in δ and γ phase was very different in the sample contained neither Ce nor Zr, but that number became almost equal by the addition of Ce and Zr.
社団法人日本鉄鋼協会の論文
2001-11-01