低炭素・低合金鋼のオーステナイト粒度に及ぼすTiNの分散状態の影響
1976 年 62 巻 9 号 p. 1209-1218
詳細
1976 年 62 巻 9 号 p. 1209-1218
The effect of TiN particles in low-carbon low-alloy steels on the austenite grain size was studied in relation to the dissolution, coalescence, and reprecipitation. Main results are summarized as follows.
(1) Ostwald ripening was observed in the process of coalescence of TiN particles.
(2) Main factors controlling the austenite grain size were the volume fraction (f) and the mean size of TiN particles (r). A linear relationship between the diameter of austenite grain and the mean distance of TiN particles (r/f) was obtained. The experimental relationship could be explained by a simple model proposed in this study.
