形变量对MAE及BN的影响  

THE EFFECT OF DEFORMATION ON MAE AND BN

作　　者：杜凤牡[1] 徐约黄[1] 

机构地区：[1]武汉大学物理学系

出　　处：《武汉大学学报（自然科学版）》1997年第5期628-632,共5页Journal of Wuhan University(Natural Science Edition)

摘　　要：研究了无取向硅钢Ｗ２３Ｇ，Ｗ１０，Ｗ１４和取向硅钢Ｑ８Ｇ４种材料在不同形变量下的磁声发射（ＭＡＥ）和巴克豪森噪音（ＢＮ），结果表明ＭＡＥ随形变量增大而减少，ＢＮ随形变量的增大而增大．测量了形变量为１０．４％的Ｗ１８和Ｗ２３Ｇ在１００，２００，３００，…，７００°Ｃ各退火１ｈ的ＭＡＥ与ＢＮ值．其中ＭＡＥ值随退火温度的升高逐渐增大，ＢＮ值在高于５００°Ｃ退火时明显下降．并对上述实验结果进行了详细讨论．This paper investigated magnetic acoustic emition(MAE) and Barkhausen noise(BN) of non oriented Fe Si alloy W 23 G,W 10 ,W 14 and oriented Fe Si alloy Q 8G under different deformation. The results show that MAE decreases and BN increases with the deformation increasing. MAE and BN of W 18 and W 23 G deformed 10.4% were measured after the samples were annealed at 100,200,300,…,700 °C respectively for one hour. MAE increases gradully as annealing temperature go up, and BN decreases obviously when it is annealed above 500 °C. The experiment results were discussed.

关 键 词：磁声发射 巴克豪森噪音 磁畴壁 形变量 铁磁材料 

分 类 号：O482.5[理学—固体物理]