The Texture and Structure of the Melt-Spun Co<sub>2</sub>MnAl-Type Heusler Alloy

The structure of the Co<sub>2</sub>MnAl<sub>-</sub>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 disordere...

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Bibliographic Details
Main Authors: Pavel Diko, Viktor Kavečanský, Tomáš Ryba, Lucia Frolová, Rastislav Varga, Zuzana Vargová
Format: Article
Language:English
Published: MDPI AG 2021-01-01
Series:Materials
Subjects:
Online Access:https://www.mdpi.com/1996-1944/14/3/501
Description
Summary:The structure of the Co<sub>2</sub>MnAl<sub>-</sub>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.
ISSN:1996-1944