Control of Phase Transformation Temperatures by Substituents in Ni-Fe-Ga Ferromagnetic Shape Memory Alloys
Control of Phase Transformation Temperatures by Substituents in Ni-Fe-Ga Ferromagnetic Shape Memory Alloys
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DOI：
10.2320/matertrans.mi200714
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发表时间：
2007-11
影响因子：
1.2
通讯作者：
H. Morito;K. Oikawa;A. Fujita;K. Fukamichi;K. Ishida;R. Kainuma
中科院分区：
文献类型：
--
作者：
H. Morito;K. Oikawa;A. Fujita;K. Fukamichi;K. Ishida;R. Kainuma
用几种第四元素代入法研究了Ni-Fe-Ga合金中马氏体相变起始温度T M S和居里温度T c的变化规律。Co或Cu部分取代Ni后，tc升高，ms降低。在Ni 54-x Co x Fe 19ga 27合金中，tc的增加尤为显著，这与Ni-Co和Co-Fe交换作用强有关。对于Ni 54 Fe 19-x Mn x Ga 27合金，随着Mn含量的增加，tc略有增加，与Ni 52 Fe x Mn 21-x Ga 27合金相似。本研究表明，通过选择取代基可以有效地控制Ni-Fe-Ga合金的tc和tms。
The variations of the martensitic transformation starting temperature T M S and the Curie temperature T c in Ni-Fe-Ga alloys have been investigated by substituting with several kinds of the fourth elements. By partial substitution of Co or Cu for Ni, T c increases and T M S decreases. In particular, the increase of T c is remarkable in the Ni 54-x Co x Fe 19 Ga 27 alloy, which is related to the strong Ni-Co and Co-Fe exchange interactions. For the Ni 54 Fe 19-x Mn x Ga 27 alloys, T c slightly increases with the increase of Mn content, in analogy with the Ni 52 Fe x Mn 21-x Ga 27 alloys. From the present study, it is demonstrated that both T c and T M S of the Ni-Fe-Ga alloys can be effectively controlled by selecting the substituents.