ECAP变形2J4合金回火后的磁性能研究

航空材料学报, 2009, 29(3): 7-12. doi: 10.3969/j.issn.1005-5053.2009.03.002

ECAP变形2J4合金回火后的磁性能研究

杜忠泽 ^1, , 伍来智 ^2, , 符寒光 ^3, , 王庆娟 ^4, , 王经涛 ^5,

1.西安建筑科技大学,冶金工程学院,西安,710055

2.上海交通大学模具CAD国家工程研究中心,上海,20030

3.北京工业大学,材料科学与工程学院,北京,100022

4.西安建筑科技大学,冶金工程学院,西安,710055

5.南京理工大学,材料系,南京,210094

基金项目: 陕西省重点科技攻关项目(2002K07-G9) 国家自然科学基金(59974018)

关键词：等径弯曲通道变形 , 2J4合金 , 回火 , 磁性能 , 冷轧

Study of Magnetic Properties of 2J4 Alloy Deformed by Equal Channel Angular Pressing after Tempering

研究了磁性材料2J4合金经等径弯曲通道变形(Equal Channel Angular Pressing,简称ECAP)和不同温度回火后的磁性能,并与冷轧变形合金的磁性能进行了对比分析.结果表明,2J4合金随着ECAP变形道次的增加,磁导率增加,4道次ECAP变形的饱和磁感应强度最高.另外,2J4合金的磁性能对回火温度的变化非常敏感,呈波浪式变化.4道次ECAP变形2J4合金沿挤压面(S面)进行85%冷轧变形,在610℃回火后获得的磁性能最好,矫顽力达到3.8364 kA/m.ECAP变形2J4合金沿挤压面的磁性能远优于传统冷轧合金.试验结果证实了采用ECAP变形方式制备高性能磁性材料是可行的.

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