About this Abstract |
Meeting |
2nd World Congress on High Entropy Alloys (HEA 2021)
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Symposium
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2nd World Congress on High Entropy Alloys (HEA 2021)
|
Presentation Title |
A Low-density Non-equiatomic AlSiCrMnFeNiCu High Entropy Alloy Strengthened with In-situ Precipitation of Cr5Si3 |
Author(s) |
Yagnesh Shadangi, Joysurya Basu , Kausik Chattopadhyay, Nilay Krishna Mukhopadhyay |
On-Site Speaker (Planned) |
Yagnesh Shadangi |
Abstract Scope |
In the present study efforts were made to study the structure, microstructure and mechanical properties of a low-density non-equiatomic AlSiCrMnFeNiCu high entropy alloy (HEA) prepared by vacuum induction melting. The structure, microstructure, chemical composition and thermal stability of HEA were investigated through X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy equipped with energy dispersive spectroscopy, and differential scanning calorimetry (DSC). The as-cast alloy exhibited a major B2-type phase along with the uniform precipitation of a minor Cr5Si3 phase. The participation of a minor Cr5Si3 phase in B2-type HEA matrix was found to be responsible for good hardness (~8 GPa) and compressive strength of this HEA. The detailed indentation behaviour of these HEAs were established through instrumented indentation testing technique. Various thermodynamic parameters were evaluated to understand the phase evolution and stability of this HEA. The property diagrams generated by ThermoCalc software was used for understanding the phases evolved. |
Proceedings Inclusion? |
Undecided |