Change on tetragonality of L10 phase with homogenization time on Ni50Mn29Sb21 shape memory heusler alloy
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Date
2022
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Springer
Access Rights
info:eu-repo/semantics/embargoedAccess
Abstract
In this study, the effects of homogenization heat treatment on microstructural and magnetic properties of the Ni50Mn29Sb21 shape memory Heusler alloy was investigated. Ni–Mn–Sb alloy system may be an important candidate to contribute on magnetic shape memory literatüre for practical applications. Based on the results of X-ray diffraction investigations, the B2 ? ? (L10) structural phase change was detected. Vibrating sample magnetometer and differential scanning calorimetry experiments revealed that the alloy exhibits a ferromagnetic transition as well as a thermoelastic martensitic transformation. At the same time, the B2 type bcc lattice structure of the paramagnetic phase has been established. A narrow temperature hysteresis has been discovered in the structural ? (B2) ? ? (L10) diffusionless martensitic phase transformation. The average lattice parameter of the B2 phase was calculated to be 2.942 Å. According to measurements taken between 41 and 47 deg, the thick 110B2 reflection was separated into two peaks: 110B2 and 111L10. Diffraction peaks demonstrate the occurrence of L10 martensite phase close to 110B2 habit plane borders. All these findings were supported by scattering electron microscope and metal microscopy analyses.
Description
Keywords
Crystal Structure, Differential Scanning Calorimetry, Martensitic Transformations
Journal or Series
Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
WoS Q Value
Q2
Scopus Q Value
Q1
Volume
53
Issue
12
