Properties of Co-alloyed Ni-Fe-Ga Ferromagnetic Shape Memory Alloys
Properties of Co-alloyed Ni-Fe-Ga Ferromagnetic Shape Memory Alloys
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DOI：
10.1007/s11665-009-9425-7
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发表时间：
2009-08-01
影响因子：
2.3
通讯作者：
Ishida, K.
中科院分区：
文献类型：
--
作者：
Chernenko, V. A.;Oikawa, K.;Ishida, K.
实验发现，在Ni54Fe20-xCo(X)Ga-26铁磁形状记忆合金中，Co从0到9at.%的变化导致：(1)马氏体相变温度从-70 A℃到120 A℃几乎呈线性变化；(2)居里温度非单调变化；(3)饱和磁化强度从60到43 am-2/kg呈线性下降。被选为单晶生长的合金已经进行了(磁)机械测试。测得超弹性效应约为4%。磁应变表现出训练效应，这是磁场诱导的孪晶界运动效应的证据。
It is experimentally found that in the Ni54Fe20-x Co (x) Ga-26 ferromagnetic shape memory alloys, Co variation from 0 to 9 at.% leads to: (i) almost linear change of martensitic transformation temperatures from -70 A degrees C to 120 A degrees C; (ii) a non-monotonous change of the Curie temperature, and (iii) a linear decrease of saturation magnetization from 60 to 43 Am-2/kg. The selected alloys grown as single crystals have been (magneto-) mechanically tested. The superelastic effect has been measured to be about 4%. The magneto-strain shows a training effect which is an evidence of the effect of magnetic-field-induced twin-boundary motion.