冷延鋼板の組織予測技術の現状と今後の展開

摘要

Nowadays, most of cold rolled steel sheets are produced in continuous annealing lines. In continuous annealing lines, the recovery, recrystal-lization, reverse transformation and dissolution of precipitates occur in the heating and homogenizing process and the transformation and precipitation occur in the cooling and aging process. The required microstructure and mechanical properties are created by controlling these metallurgical phenomena properly. For the sophisticated control of these phenomena, the model for predicting microstructure is a useful tool and therefore, many models have been developed. In this review, the present status of those models is surveyed and their problems and future tasks are discussed.%冷延鋼板の組織制御は高強度化ならびに高機能化の潮流rnに乗り，その重要性が増している。それに伴い冷延鋼板のrn組織，材質を予測するモデルの開発ニーズも高まっているrnが，現状は要素に分かれた組織材質予測モデルの開発が大rn半で，熱延鋼板に見られるような総合的な一貫予測モデrnルは著者の知る限りでは開発されていない。