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在沸腾钢板的生产中,如果用HNX气体(纯H_2和N_2组成的混合气体)作退火气氛,钢板的含氮量在罩式炉退火阶段就会聚到一个恒定不变的水平。因此,炼钢时增加的含氮量并不影响钢板的应变时效特性,但却恶化了钢板的深冲性能或γ值。为了弄清楚氮对再结晶织构形成的影响,利用在350℃到400℃时铁与气体的反应来改变冷轧和再结晶退火期间钢中的氮含量,然后比较了它们的再结晶织构。再结晶织构中{111)和{110}组份的数量,明显地受退火阶段钢的含氮量的影响,而不受冷轧阶段钢的含氮量的影响,同时,{100}组份的数量或再结晶晶粒度都不受含氮量的影响。这意味着,在炼钢时钢包内大量的氮导致它们以间隙溶质的形式,存在于冷轧钢的回复或再结晶阶段,它们在再结晶退火中促使{110}组份的再结晶而抑制{111}组份的发展。
In the production of boiling steel, if HNX gas (a mixed gas consisting of pure H 2 and N 2) is used as the annealing atmosphere, the nitrogen content of the steel sheet converges to a constant level during the annealing of the bell furnace. Therefore, the increased nitrogen content during steelmaking does not affect the strain-aging behavior of steel but deteriorates the deep drawing properties or γ values of steel. To clarify the effect of nitrogen on the recrystallization texture formation, the reaction of iron with gas at 350 ° C to 400 ° C was used to change the nitrogen content in the steel during cold rolling and recrystallization annealing and then their recrystallization texture was compared . The amount of {111} and {110} components in the recrystallized texture was significantly affected by the nitrogen content of the steel in the annealing stage, not affected by the nitrogen content of the steel in the cold rolling stage. Meanwhile, the {100} The amount of grain or recrystallized grain size is unaffected by the nitrogen content. This means that a large amount of nitrogen in the ladle at the time of steelmaking causes them to exist in the form of interstitial solutes during the recovery or recrystallization phase of the cold-rolled steel, which causes recrystallization of the {110} component to suppress the recrystallization annealing The development of the {111} component.