热处理对Fe-13at%Ga合金内耗行为的影响  

Effects of Heat Treatment on Internal Friction Behavior of Fe-13at%Ga Alloy

作　　者：李先雨 郝刚领[1] 韩福生[2] 王伟国[1] 

机构地区：[1]延安大学物理与电子信息学院,延安716000 [2]中国科学院固体物理研究所,合肥230031

出　　处：《科学技术与工程》2014年第29期135-138,共4页Science Technology and Engineering

基　　金：陕西省教育厅项目(12JK0439);延安市科技局工业攻关(2011kg-12);陕西省科技厅项目(2013KJXX-11)资助

摘　　要：研究了热处理对Fe-13at%Ga合金内耗行为的影响。实验发现,该合金对热历史和测量条件有高度敏感性。经过高温热处理,低温范围内合金的阻尼能力都得到了极大地提高。认为低温范围内,其阻尼来源于相变及由磁畴的不可逆运动引起的磁机械滞后作用,是一种综合机制;高温内耗峰具有典型的弛豫特征,是一个晶界弛豫峰。The internal friction behaviour of Fe-13at％Ga was studied.It is found that the internal friction behaviour of the alloys shows high sensitivities to thermal history and measuring conditions.In the low temperature range,the damping capacity of the alloys raised greatly after heat treatment.It can concluded that the low-temperature internal friction can be attributed to the phase transition and magnetomechanical hysteresis caused by the irreversible motion of magnetic domain while the high-temperature IF peak with typical relaxation natures originates from the grain boundary relaxation.

关 键 词：Fe-13at%Ga合金 内耗 高阻尼材料 磁机械滞后 

分 类 号：TG166.7[金属学及工艺—热处理]