交流磁场对Fe-16Cr-2.5Mo合金阻尼性能的影响  

Effect of alternate magnetic field on damping capacity of Fe-16Cr-2.5Mo alloy

作　　者：李宁[1] 齐敦杰[1] 黄云[1] 文玉华[1] 黄姝珂[1] 胥永刚[2] 黄勇[1] 

机构地区：[1]四川大学制造科学与工程学院,四川成都610065 [2]上海交通大学机械系统与振动国家重点实验室,上海200240

出　　处：《金属热处理》2009年第2期75-77,共3页Heat Treatment of Metals

基　　金：上海交通大学机械系统与振动国家重点实验室开放基金(VSN-2007-04);总装备部预研基金(51481040203SC0102)

摘　　要：采用改进的JN-1型倒扭摆内耗仪研究了外加交流磁场对Fe-16Cr-2.5Mo合金阻尼性能的影响。试验结果表明,在交流磁场作用下,合金的阻尼性能随磁场强度的增加先增大后减小,但衰减速度超过直流磁场。通过理论推导发现,导致这一变化的原因是交变磁场使畴壁处于振动状态,其振动幅度比直流磁场的大。The damping capacity of Fe-16Cr-2. 5 Mo alloy under alternate magnetic field was measured with the JN-1 reversal torsion pendulum device. The results indicate that with alternate magnetic intensity increasing, the damping capacity of the alloy increases firstly and then decreases, but the damping capacity decreases more drastically than direct-current magnetic field. The reason is that alternate magnetic field results in domain-boundary vibration and domain-boundary vibration amplitude becomes larger.

关 键 词：阻尼合金 Fe-Cr-Mo 铁磁合金 交流磁场 

分 类 号：TG135.7[一般工业技术—材料科学与工程]