退火态Fe-16Cr-2.5Mo阻尼合金磁致伸缩特性与阻尼性能的关系分析  

Relationship between magnetostriction and damping capacity of Fe-16Cr-2.5Mo damping alloy

作　　者：陈晓钢[1] 胥永刚[1] 金佥[1] 

机构地区：[1]西南交通大学材料科学与工程学院,四川成都610031

出　　处：《金属热处理》2013年第2期35-38,共4页Heat Treatment of Metals

基　　金：国家自然科学基金(11172248)

摘　　要：采用改进的迈克尔逊干涉仪研究了Fe-16Cr-2.5Mo阻尼合金在800、900、1000、1100℃退火空冷下的磁致伸缩特性。用悬臂梁测试系统分析了退火态合金的阻尼性能。研究发现,随着退火温度的升高,Fe-16Cr-2.5Mo合金的饱和磁致伸缩系数λs和损耗因子η都在900℃出现峰值,分别达43.2×10-6和0.0622。合金的饱和磁致伸缩系数λs随温度的变化规律与损耗因子η一致。饱和磁致伸缩系数反映了磁机械效应的强弱程度,随着饱和磁致伸缩系数λs的增加,损耗因子η也逐渐增加,二者呈近似的线性关系。The magnetostrictive values of Fe-16Cr-2.5Mo damping alloy annealed at 800,900, 1000, and 1100 ℃ were measured by using an improved Michelson interferometer. The cantilever beam device was used to test the damping capacity of the annealed specimens. The experimental results show that the value of saturation magnetostriction varies in agreement with that of the loss factor. As the saturation magnetostriction reaches a maximum value of 43.2 x 10^-6 for the specimen annealed at 900℃, the loss factor also reaches a maximum value of 0.0622. To some extent, the saturation magnetostriction reflects the degree of the strength of the magnetomechanical effect. The saturation magnetostriction is approximately linear with the loss factor.

关 键 词：Fe-16Cr-2 5Mo合金 磁致伸缩 阻尼 退火 

分 类 号：TG135.7[一般工业技术—材料科学与工程]