Martensitic Transformation and Metamagnetic Transition in Co-V-(Si, Al) Heusler Alloys
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چکیده
منابع مشابه
Martensitic Transformation in Ni-Mn-Sn-Co Heusler Alloys
Thermal and structural austenite to martensite reversible transition was studied in melt spun ribbons of Ni50Mn40Sn5Co5, Ni50Mn37.5Sn7.5Co5 and Ni50Mn35Sn10Co5 (at. %) alloys. Analysis of X-ray diffraction patterns confirms that all alloys have martensitic structure at room temperature: four layered orthorhombic 4O for Ni50Mn40Sn5Co5, four layered orthorhombic 4O and seven-layered monoclinic 14...
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We show that in metamagnetic shape memory alloys exhibiting a magnetostructural first order phase transition the direct transition from ferromagnetic austenite to nonmagnetic martensite is isothermal. In contrast to the direct transformation, the reverse one nonmagnetic martensite–ferromagnetic austenite is athermal, just as are athermal both direct and reverse martensitic transformations in co...
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Specific heat was systematically measured by the heat flow method in Ni50−xCoxMn50−yAly metamagnetic shape memory alloys near the martensitic transformation temperatures. Martensitic transformation and ferromagnetic–paramagnetic transition for the parent phase were directly observed via the specific heat measurements. On the basis of the experimental results, the entropy change was estimated an...
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The microstructure and martensitic transformation in the Ni-36.3Al-0.1Y (in at.%) alloy were investigated after ho~nogenisation and plastic deformation by hot upsetting at 1100°C. The alloy exhibited large, recrystallised grains of the Ni-A1 P phase wit11 spl~erical precipitates inside the grains and a thin layer of other phases located at the grain boundaries. The SEM and EDX analysis showed t...
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ژورنال
عنوان ژورنال: Metals
سال: 2021
ISSN: 2075-4701
DOI: 10.3390/met11020226