Al在无取向电工钢晶粒长大过程中对织构及晶界变化的影响  

Effect of Al in the Nonoriented Electrical Steel on Texture and Grain Boundary Development During Grain Growth

作　　者：周顺兵[1] 陈颜堂[1] 冯大军[1] 杜光梁[1] 张彦文[1] 

机构地区：[1]武汉钢铁(集团)公司研究院,武汉430080

出　　处：《电工材料》2010年第1期33-38,共6页Electrical Engineering Materials

摘　　要：研究了含Al和不含Al的无取向电工钢在晶粒长大过程中织构转变及晶界变化的规律。结果表明,晶粒长大过程中电工钢的主要织构组分均为{111}〈112〉。在晶粒生长期间,不加Al的电工钢中{111}〈112〉、{111}〈110〉织构组分强化,而{100}〈001〉织构组分弱化。与不加Al的钢相比,加Al后,{111}〈112〉、{111}〈110〉织构组分强化的速率下降,{100}〈001〉织构组分变化不明显,甚至稍有增加。对于在晶粒生长期间持续变化的{111}〈112〉、{111}〈110〉和{100}〈001〉织构组分而言,{111}〈112〉和{111}〈110〉织构组分的低取向差角度晶界频率上升,而{100}〈001〉织构组分的低取向差角度晶界频率下降,但加入Al后,这些织构组分的低取向差角度晶界频率下降的速率明显变小。The rules of texture and grain boundary transformation in the nonoriented electrical steel during grain growth were investigated.The experimental results have shown that the main texture component is {111}〈112〉 in the electrical steel.The {111}〈112〉 and {111}〈110〉 components in the nonoriented electrical steel without Al were strengthened during grain growth whereas {100}〈001〉 component was weakened,but the growth rate of {111}〈112〉 and {111}〈110〉 component decreased,while the area fraction of {100}〈001〉 component did not change significantly in the steel containing Al.For the {111}〈112〉,{111}〈110〉 and {100}〈001〉 components to be continuously changed during grain growth,the frequency of low angle misorientation grain boundary of {111}〈112〉 and {111}〈110〉 components increased,and that of {100}〈001〉 component decreased.After Al was added in the steel,the frequency decreasing rates brought low.

关 键 词：无取向电工钢 晶粒长大 织构 面积分数 取向差角度 频率 

分 类 号：TM275[一般工业技术—材料科学与工程]