About this Abstract |
Meeting |
2nd World Congress on High Entropy Alloys (HEA 2021)
|
Symposium
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2nd World Congress on High Entropy Alloys (HEA 2021)
|
Presentation Title |
Phase Stability and Mechanical Properties of MgAlSiCr Containing Low-density High Entropy Alloys |
Author(s) |
Nandini Singh, Priyatosh Pradhan, Yagnesh Shadangi, Nilay Krishna Mukhopadhyay |
On-Site Speaker (Planned) |
Nilay Krishna Mukhopadhyay |
Abstract Scope |
In the present study we investigated the phase evolution and mechanical properties of MgAlSiCrFe, MgAlSiCrFeNi, MgAlSiCrFeCuZn low-density high entropy alloys (LDHEAs) processed through mechanical alloying (MA) and spark plasma sintering (SPS). The sequence of the phase evolution during MA and SPS was ascertained through X-ray diffraction (XRD) and transmission electron microscopy (TEM). The morphology, microstructure and chemical composition of these LDHEAs were investigated with the help of scanning electron microscope (SEM) equipped with EDS detector. These LDHEAs were found to be thermally stable upto ~400℃ as observed through the DSC thermogram and ex-situ XRD investigation of the annealed LDHEA powders. Further, efforts were made to investigate the indentation behaviour of these LDHEAs through instrumented microhardness tester. These LDHEAs exhibited high hardness and strength. The phases evolved during MA and SPS were understood with the help of various thermodynamic parameters and CALPHAD modelling using ThermoCalc software. |
Proceedings Inclusion? |
Undecided |