Co和Ni对(Fe_(71.2)B_(24)Y_(4.8))_(96)Nb_4块体非晶合金因瓦效应的影响  

Influence of Co and Ni on Invar Effect of(Fe_(71.2)B_(24)Y_(4.8))_(96)Nb_4 Bulk Metallic Glass

作　　者：王金苗 胡强[2] 严意宏 胡曹生 谢盛辉[1] 曾燮榕[1,4] WANG Jinmiao;HU Qiang;YAN Yihong;HU Caosheng;XIE Shenghui;ZENG Xierong(College of Materials Science and Engineering,Shenzhen University,Shenzhen 518060,China;Institute of Applied Physics,Jiangxi Academy of Sciences,Nanchang,330029,China;Jiangxi Dayou Technology Co.Ltd.,Yichun 336000,China;Dongguan Janus Precision Components Co.Ltd.,Dongguan 441900,China)

机构地区：[1]深圳大学材料学院,深圳518060 [2]江西省科学院应用物理研究所,南昌330029 [3]江西大有科技有限公司,宜春336000 [4]东莞劲胜精密组件股份有限公司,东莞441900

出　　处：《材料研究学报》2018年第9期691-696,共6页Chinese Journal of Materials Research

基　　金：深圳市科技计划(JCYJ20150324141711663;JCYJ20160422104921235);东莞市引进创新科研团队项目(2014607109)~~

摘　　要：进行了[(Fe_(100-x)Co_x)_(71.2)B_(24)Y_(4.8)]_(96)Nb_4(x=0～60)和[(Fe100-xNix)71.2B24Y4.8]96Nb4(x=0～20)块体非晶合金的热膨胀实验。结果表明,加入Co和Ni使合金的因瓦效应减弱,替代量x相同时减弱的程度也基本相同。这些结果说明,添加Co和Ni对Fe原子局域结构的主要影响是减少了Fe-Fe原子对的数目。同时还发现,居里温度与磁性相变结束后的热膨胀系数呈反向变化,与结构弛豫导致的自由体积释放有关。Thermal expansion behavior of bulk metallic glasses [（Fe100-xCox）71.2 B24 Y4.8]96 Nb4（x=0～60）and [（Fe100-xNix）71.2 B24 Y4.8]96 Nb4（x=0～20） was investigated. Results show that the Invar effect of the（Fe71.2 B24 Y4.8）96 Nb4 decreases after the addition of Co or Ni, and the decreasing extent is almost the same if the amount of x is the same for Co and Ni respectively. These phenomena indicate that the decreasing amount of the Fe-Fe atomic pairs is the main influence of Co and Ni on the Fe atomic local structure. In addition, the thermal expansion coefficient after the magnetic transition changes oppositely with the Curie temperature, which is mostly related to the free volume annihilation in the structural relaxation.

关 键 词：金属材料 铁基块体非晶合金 因瓦效应 热膨胀 居里温度 

分 类 号：TG139[一般工业技术—材料科学与工程] TG142[金属学及工艺—合金]