A high-temperature coupling of martensitic and magnetic transformations and magnetic entropy change in Ni-Fe-Ga-Co alloys
A high-temperature coupling of martensitic and magnetic transformations and magnetic entropy change in Ni-Fe-Ga-Co alloys
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DOI：
10.1016/j.scriptamat.2008.07.019
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发表时间：
2008-11
影响因子：
6
通讯作者：
Jian Liu;N. Scheerbaum;D. Hinz;O. Gutfleisch
中科院分区：
文献类型：
--
作者：
Jian Liu;N. Scheerbaum;D. Hinz;O. Gutfleisch
在 Ni52Fe17Ga27Co4 合金中发现~90°C 时马氏体和磁转变的耦合。 300或400℃时效对相变温度影响较弱，但显着增加马氏体相变区间和磁滞以及磁化温度磁滞。研究了具有良好耦合磁结构转变的样品中的磁熵变化。 500°C 时效会导致 γ 相析出物的形成。
A coupling of martensitic and magnetic transformations at ∼90°C is found in Ni52Fe17Ga27Co4alloy. Ageing at 300 or 400°C has a weak effect on transformation temperatures, but significantly increases the martensitic transformation interval and hysteresis, as well as the temperature hysteresis of magnetization. Magnetic entropy changes are investigated in samples with well-coupled magnetostructural transitions. Ageing at 500°C causes the formation of γ phase precipitates.