| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Development of Light Weight Alloys and Composites
|
| Presentation Title |
Surge for Design and Development of Low-density High Entropy Alloys and Composites |
| Author(s) |
Nandini Singh, Yagnesh Shadangi, Vivek Kumar Pandey, Vikas Shivam, Nilay Krishna Mukhopadhyay |
| On-Site Speaker (Planned) |
Nilay Krishna Mukhopadhyay |
| Abstract Scope |
The demand for advanced lightweight materials for various engineering applications has brought a paradigm shift in alloy-development strategies. In recent times multi-principal element alloys (MPEA), also known as high entropy alloys (HEAs) have gained much of attention due to their promising potential. In the present investigation, attempts were made to study a few equiatomic MgAlSiCrFe, MgAlSiCrFeNi, MgAlSiCrFeCuZn and MgAlMnFeCu low-density high entropy alloys (LDHEAs), processed through mechanical alloying (MA) and spark plasma sintering (SPS). The sequence of phase evolution during MA and SPS was ascertained through XRD and TEM. The microstructure and chemical composition of milled powder and SPSed samples were investigated through SEM equipped with EDS. The mechanical properties of these LDHEAs evaluated by instrumented microhardness and compressive testing were found to exhibit excellent mechanical strength, especially high strength to density ratio. Thermodynamic modelling including CALPHAD modelling were considered for discussing phase evolution and stability during MA and SPS. |