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The Texture and Structure of the Melt-Spun Co(2)MnAl-Type Heusler Alloy

The structure of the Co(2)MnAl(-)type Heusler alloy in the form of a melt-spun ribbon was studied by electron microscopy, electron back-scattered diffraction (EBSD), and X-ray diffraction. The melt-spun ribbon consists of a homogeneous single-phase disordered Heusler alloy at the wheel side of the r...

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Detalles Bibliográficos
Autores principales: Diko, Pavel, Kavečanský, Viktor, Ryba, Tomáš, Frolová, Lucia, Varga, Rastislav, Vargová, Zuzana
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7864497/
https://www.ncbi.nlm.nih.gov/pubmed/33494251
http://dx.doi.org/10.3390/ma14030501
Descripción
Sumario:The structure of the Co(2)MnAl(-)type Heusler alloy in the form of a melt-spun ribbon was studied by electron microscopy, electron back-scattered diffraction (EBSD), and X-ray diffraction. The melt-spun ribbon consists of a homogeneous single-phase disordered Heusler alloy at the wheel side of the ribbon and an inhomogeneous single-phase alloy, formed by cellular or dendritic growth, at the free surface of the ribbon. Cellular growth causes the formation of an inhomogeneous distribution of the elemental constituents, with a higher Co and Al concentration in the centre of the cells or dendritic arms and a higher concentration of Mn at the cell boundaries. The EBSD analysis shows that the columnar crystals grow in the <111> crystal direction and are declined by about 10° against the direction of the spinning.