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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Dependence of the relative stability between austenite and martensite phases on the atomic order in a Ni-Mn-In Metamagnetic Shape Memory Alloy
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Dependence of the relative stability between austenite and martensite phases on the atomic order in a Ni-Mn-In Metamagnetic Shape Memory Alloy

机译：Ni-Mn-In超磁形状记忆合金中奥氏体和马氏体相之间的相对稳定性取决于原子序

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摘要

The influence of the atomic order on the magnetic properties and the relative stability between phases in a Ni-Mn-In Metamagnetic Shape Memory Alloy has been studied through the analysis of the effect of the different quenching treatments on the magnetic and structural transformation temperatures. As a consequence of the variation on the degree of long-range atomic order, the martensitic transformation temperature highly increases with the increasing quenching temperature whereas the Curie temperature slightly decreases. The modification of the atomic order brought by the quenching process also promotes a reduction of the entropy change linked to the martensitic transformation. In turn, no evolution of the magnetization change at the martensitic transformation is detected. According to the Claussius-Clapeyron equation, the achievable shift of the martensitic transformation temperature with the applied magnetic field also depends on the degree of atomic order.
机译：通过分析不同淬火处理对磁性和结构转变温度的影响，研究了原子序数对Ni-Mn-In超磁性形状记忆合金中磁性能和相之间相对稳定性的影响。由于长程原子有序度的变化，马氏体转变温度随着淬火温度的升高而大大增加，而居里温度则略有降低。淬火过程带来的原子序的改变也促进了与马氏体相变有关的熵变的减少。进而，未检测到马氏体相变处的磁化变化的演变。根据Claussius-Clapeyron方程，马氏体转变温度随施加磁场的可达到位移也取决于原子序数。

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