Pohang University of Science and Technology · Engineering
Professor Praveen Sathiyamoorthi's research lab specializes in the development and characterization of advanced structural materials, with a primary focus on high- and medium-entropy alloys (HEAs and MEAs). The lab investigates microstructure-property relationships in these multi-principal element alloys, emphasizing microalloying, severe plastic deformation (such as high-pressure torsion), and thermomechanical processing to achieve exceptional combinations of strength, ductility, and high-temperature stability. Key research directions include phase stability, precipitation strengthening, and density optimization through spark plasma sintering, with applications in high-performance engineering components.
Figures are computed from collected data and may differ slightly.
Multi‐principal elemental alloys, commonly referred to as high‐entropy alloys (HEAs), are a new class of emerging advanced materials with novel alloy design concept. Unlike the design of conventional alloys, which is based on one or at most two principal elements, the design of HEA is based on multi‐principal elements in equal or near‐equal atomic ratio. The advent of HEA has revived the alloy design perception and paved the way to produce an ample number of compositions with different combinati
Annealing of severely plastic deformed materials is expected to produce a good combination of strength and ductility, which has been widely demonstrated in conventional materials. In the present study, high-pressure torsion processed CoCrNi medium entropy alloy consisting of a single face-centered cubic (FCC) phase with a grain size of ~50 nm was subjected to different annealing conditions, and its effect on microstructure and mechanical behavior was investigated. The annealing of high-pressure
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