Microstructural evolution, thermal stability and nanoindentation behaviour of (MgAl)70Zn20(BiSn)10 light weight high entropy alloy

Microstructural evolution, thermal stability and nanoindentation behaviour of (MgAl)70Zn20(BiSn)10 light weight high entropy alloy

This study investigates the mechanical, microstructural and corrosion behaviour of the (MgAl)70Zn20(BiSn)10 (at.%) high-entropy alloy. X-ray diffraction (XRD)and scanning electron microscopy (SEM) analyses revealed the presence of multiple intermetallics, including Mg2Sn, BCC Bergman phase τ-Mg32(Zn...

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Bibliographic Details
Main Authors: Henil Thakkar, Sai Sri Harsha G．V, Renuga Devi K, Sreekanth Dondapati
Format: Article
Language:English
Published: Elsevier 2025-03-01
Series:Results in Engineering
Subjects:
Magnesium
High entropy alloy
Thermogravimetric analysis
Nanoindentation
Online Access:http://www.sciencedirect.com/science/article/pii/S2590123025003822
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Summary:This study investigates the mechanical, microstructural and corrosion behaviour of the (MgAl)70Zn20(BiSn)10 (at.%) high-entropy alloy. X-ray diffraction (XRD)and scanning electron microscopy (SEM) analyses revealed the presence of multiple intermetallics, including Mg2Sn, BCC Bergman phase τ-Mg32(Zn,Al)49, Sn3Bi, Zn2Sn, and Mg3Bi2 in the alloy's microstructure. Compression testing demonstrated that the alloy possesses a compressive strength of ∼270 MPa and favourable plasticity. Nanoindentation results showed varying hardness and stiffness across the different phases. Notably, high hardness was observed for Sn3Bi, matrix, τ-Mg32(Zn,Al)49 phases respectively. Additionally, thermogravimetric examination demonstrated the alloy's exceptional oxidation resistance, maintaining stability in air up to temperatures as high as 490 °C.
ISSN:2590-1230

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