彭宇凡,王子豪,宋新莉,黄昌虎,李兆振,贾涓

• 1:武汉科技大学省部共建耐火材料与冶金国家重点实验室

摘要(Abstract)：

借助光学显微镜、扫描电镜、交流磁性能测量仪和万能拉伸试验机研究了0.3 mm厚高强无取向电工钢冷轧板在780、820、860和900℃退火保温2 min后的组织、织构和性能。结果表明:在退火温度范围内,试验钢均发生了完全再结晶,得到等轴状的铁素体晶粒;随着退火温度的升高,平均晶粒尺寸从9.2μm增长到41.3μm,工频铁损和400 Hz高频铁损均先大幅减小后趋于平缓,磁感应强度先升高后降低。在820℃退火时,铁损P_(1.5/50)=5.51 W/kg,P_(1.0/400)=33.22 W/kg均处于较低值,磁感应强度B_(5000)最大,为1.649 T。试验钢的屈服强度和抗拉强度均随退火温度的升高而降低,780℃退火时屈服强度为496 MPa, 900℃退火时降低至407 MPa。综合磁性能和力学性能考虑,试验钢的最佳退火温度是820℃。

关键词(KeyWords)： 无取向电工钢;退火温度;织构;磁性能;强度

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(52074200);; 湖北省重点研发计划(2020BAA027)

作者(Author): 彭宇凡,王子豪,宋新莉,黄昌虎,李兆振,贾涓

DOI: 10.13289/j.issn.1009-6264.2021-0319

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