安徽工业大学冶金工程学院;钢铁研究总院有限公司;
采用光学显微镜与X射线衍射仪(XRD)研究了不同温度(850、900和950℃)退火保温不同时间(2、3、5和7 min)对W350高牌号无取向硅钢显微组织和宏观织构的影响。结果表明：W350高牌号无取向硅钢冷轧板的显微组织存在较多形变带，织构类型以γ纤维织构和α纤维织构为主；经850～950℃退火后，样品均发生了完全再结晶，形变带全部消失，呈现等轴晶组织形态；整体上看，退火温度越高，保温时间越长，再结晶所形成的平均晶粒尺寸越大，退火板织构类型主要是γ纤维织构和α*纤维织构。与冷轧试样相比，随退火温度的升高和保温时间的延长，α纤维织构逐渐向α*纤维织构转化和立方织构向{001}<210>聚集，且γ纤维织构组分与强度明显降低；保温2和3 min时，随退火温度的升高，因平均晶粒尺寸的增大，试样的铁损始终逐渐降低，但保温5和7 min时，随退火温度升高，铁损先下降后上升，950℃退火时，保温时间过长导致晶粒过大，铁损出现升高现象。总体上看，随着退火温度的升高和保温时间的延长，W350无取向硅钢的磁感应强度始终在降低，但变化范围较小，在950℃退火保温3 min后，其磁性能最佳，P1.5/50=2.48 W/kg,B50=1.680 T。
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基本信息:
DOI：10.13289/j.issn.1009-6264.2024-0332
中图分类号:TG142.1;TG156.2
引用信息:
[1]尹萍,牛宇豪,邵凯旋等.退火温度和时间对W350高牌号无取向硅钢组织及织构的影响[J].材料热处理学报,2025,46(05):112-121.DOI:10.13289/j.issn.1009-6264.2024-0332.
基金信息:
国家自然科学基金(51804003,52374316); 安徽省教育厅科学研究重点项目(2022AH050291); 江西省重大科研专项项目(20213AAE01009)