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Microstructure and Mechanical Properties of Bulk Nanocrystalline Al88Mm5Ni5Fe2 Alloy Consolidated at High Pressure
(Elsevier, 2007)
Bulk nanocrystalline Al88Mm5Ni5Fe2 alloys have been produced by consolidation of pulverised melt-spun ribbons at high pressure. Different production procedures were explored to improve the quality of compaction of the ...
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Nanocrystallization Kinetics Understood as Multiple Microprocesses Following the Classical Theory of Crystallization
(Elsevier, 2016)
In this work, we propose a model for using the classical Johnson-Mehl-Avrami-Kolmogorov (JMAK) crystallization theory to analyze nanocrystallization processes as a set of multiple microprocesses. This model is based on the ...
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Thermo-magnetic characterization of phase transitions in a Ni-Mn-In metamagnetic shape memory alloy
(Elsevier, 2021-12-20)
The partially overlapped ferroelastic/martensitic and para-ferromagnetic phase transitions of a Ni50.53Mn33.65In15.82 metamagnetic shape memory alloy have been studied from calorimetric, magnetic and acoustic emission ...
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Kinetic Analysis of the Transformation from 14M Martensite to L21 Austenite in Ni-Fe-Ga Melt Spun Ribbons
(Multidisciplinary Digital Publishing Institute (MDPI), 2021)
In this study, the non-isothermal kinetics of the martensitic transition from 14M modulated martensite to austenite phase in Ni55Fe19Ga26 ribbons obtained by melt-spinning has been analyzed. The proximity of the martensitic ...
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Mechanical Amorphization and Recrystallization of Mn-Co(Fe)-Ge(Si) Compositions
(MDPI, 2019-05)
Mechanical alloying using a planetary ball mill allowed us to obtain two homogeneous systems formed by units with nanometer size and MnCo0.8Fe0.2Ge1−xSix stoichiometry (x = 0 and 0.5). The phase evolution of the systems ...
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Influence of the demagnetizing factor on the magnetocaloric effect: Critical scaling and numerical simulations
(AIP Publishing, 2014)
In recent years, the magnetocaloric effect is studied not only for the search of potential magnetic refrigerant materials but also for the analysis of critical phenomena. In both cases, the demagnetizing field might have ...
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Comparative study of structural and magnetic properties of ribbon and bulk Ni55Fe19Ga26 Heusler alloy
(Elsevier, 2021)
The influence of the fabrication method on the magnetostructural properties of a Ni55Fe19Ga26 Heusler alloy, obtained both as a ribbon, by melt-spinning, and as a pellet, by arc-melting, has been analyzed. It has ...
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Grinding and particle size selection as a procedure to enhance the magnetocaloric response of La( Fe, Si)(13) bulk samples
(Elsevier, 2017-05)
The magnetocaloric effect of La(Fe,Si)13 samples deteriorates with the presence of secondary phases. However, it is highly challenging to produce single phase samples by conventional procedures and purification requires ...
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Microstructural Evolution Characterization of Fe-Nb-B Ternary Systems Processed by Ball Milling
(Taylor & Francis, 2009)
Fe-Nb-B alloys prepared by ball milling can undergo a complex microstructural evolution during milling. In order to overcome the limitations imposed by traditional X-ray bulk analysis, a comprehensive multi-technique ...
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Detection of the onset of nanocrystallization by calorimetric and magnetic measurements
(AIP Publishing, 2005-01-24)
It is generally accepted that measurements of the magnetic properties are more sensitive than measurements of the enthalpy changes in the detection of the onset of crystallization of ferromagnetic phases emerging from a ...