冷轧压下率对含Nb细晶高强IF钢织构形成机制的影响

发布时间：2018-03-03 11:40

本文选题：细晶高强IF钢　切入点：冷轧压下率　出处：《材料热处理学报》2015年02期 　论文类型：期刊论文

【摘要】：以含Nb细晶高强IF钢热轧板为研究对象,研究了冷轧压下率对实验钢冷轧织构以及再结晶织构形成影响。结果表明,退火后铁素体晶粒细化,强度提高。实验钢经冷轧后主要的织构为{112}110、{111}112、{111}110、{001}110,并且随冷轧压下率增加,织构组分无变化,各组分强度整体增加。再经退火后,在α线上织构减弱,甚至一些织构逐渐消失。提高冷轧压下率时,织构峰值逐渐由{001}110转为{111}110。对于γ取向线,峰值由{111}110取向变为{111}112取向,最终{111}112比{111}110取向强度大。实验钢再结晶机制由定向形核和选择生长共同作用的结果,并且随冷轧压下率增大,{111}面织构强度增大,所以r(塑性应变比)值增大,深冲性能提高。
[Abstract]:The effect of cold rolling rate on cold rolling texture and recrystallization texture formation of high strength if steel containing NB was studied. The results showed that the ferrite grains were refined after annealing. The main texture of the experimental steel after cold rolling is {112} 110, {111} 112, {111} 110, {001} 110, and with the increase of cold rolling reduction rate, the texture composition does not change, and the strength of each component increases as a whole. After annealing, the texture on 伪 line decreases. The peak value of texture gradually changed from {001} 110 to {111} 110.The peak value of {111} 110 changed from {111} 110 to {111} 112 for 纬 -oriented line. In the end, the orientation strength of {111} 112 is higher than that of {111} 110. The recrystallization mechanism of experimental steel is caused by the combination of directional nucleation and selective growth, and the {111} texture strength increases with the increase of cold rolling reduction rate, so the value of r (plastic strain ratio) increases and the deep drawing property increases.
【作者单位】：辽宁科技大学材料与冶金学院;鞍钢股份技术中心;
【基金】：辽宁省教育厅项目(LS2010036) 辽宁省自然科学基金项目(20102099)
【分类号】：TG142.1;TG335.12

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