極低炭素鋼におけるセメンタイトのMnS上複合析出におよぼすフェライト下部組織の影響
1994 年 80 巻 4 号 p. 318-323
詳細
1994 年 80 巻 4 号 p. 318-323
The effect of ferrite substructure on precipitation of Fe3C at MnS in in Al-killed steel was studied. By heat treatment, dislocation density and grain size were varied under the presence of MnS particles. By the subsequent aging at 603K and 703K, the ratio of Fe3C precipitates nucleating on MnS with respect to the total number of Fe3C precipitates was lowered under the presence of a larger number of dislocations and grain boundaries. It was considered that a MnS particle is less effective than a dislocation, and is comparably effective with a grain boundary is t heterogeneous nucleation site of Fe3C in ferrite.
