取向硅钢中含铜抑制剂的固溶析出行为

含铜抑制剂作为取向硅钢的主抑制剂或辅助抑制剂不仅可以抑制初次晶粒的长大,促进二次再结晶,还可以降低铸坯的加热温度。取向硅钢中主要抑制剂为10～50 nm Cu₂S,在钢的铸坯、热轧、冷轧、脱碳等工艺过程均可析出;(Cu,Mn)_1.8S、Cu_1.8S、ε-Cu等主要作为辅助抑制剂,尺寸一般为30～50 nm(或大于50 nm),主要在热轧阶段析出。总结了国内外有关取向硅钢中含铜抑制剂析出行为的研究进展,当前主要研究不同生产流程和工序中含铜抑制剂的析出行为和作用机理。

Behaviors of Solution and Precipitation of Inhibitor Bearing Copper in Grain-Oriented Silicon Steel

As main inhibitor or auxiliary inhibitor for grain-oriented silicon steel, the particles of inhibitor bearing copper not only inhibit the primary crystal growing and promote the secondary recrystallization, but also decrease the heat temperature of casting slab. The main inhibitor for grain-oriented silicon steel is 10 ~ 50 nm Cu₂S, which precipitate in process and procedure including steel casting slab, hot rolling, cold rolling and decarburizing process, while the 30 - 50 nm or more than 50 nm （ Cu,Mn）_1.8S, Cu_1.8S and ε-Cu etc are mainly as auxiliary inhibitor which mostly precipitate in hot rolling process. The progress of research works on behaviors of solution and precipitation of inhibitors bearing copper in grain-oriented silicon steel at home and abroad is summarized in this paper, and current research works are precipitated behaviors and effect mechanism of inhibitors bearing copper in different production flow sheet and procedure.