재료공학부 교수
최윤석
The structure-property correlations of the materials are being extensively studied throughout the world to identify the ideal structure for the necessary applications. With the assistance from the studies made on material properties based on the microstructure, great strides have been made in developing materials and manufacturing processes for future needs. The structure-property correlations of newly developed materials and, materials subject to newly developed processes are being broadly studied. The properties of materials should be such that they could be used in inexpensive manufacturing processes to provide the best product. Especially for High Temperature Materials, which undergo phase transformation and/or has new slip systems activated which changes the properties of the material completely. The structure-property correlations of materials for various applications are studied here, for example, Al alloys, Mg alloys, Ni-based superalloys, Steels, High Entropy Alloys, etc.,.
Multi-scale modelling helps in understanding the properties of materials by simulating the properties based on atomistic and/or microscopic level, which is further extrapolated to the higher mesoscopic and/or macroscopic levels, or vice-versa. The properties obtained from the structure-property correlation studies are used to develop analytical models or material model using Crystal Plasticity Finite Element Modelling (CPFEM) in ABAQUS and the results are used to predict the behavior material under different conditions. Similarly, Flow3D is being used to develop casting process which help in reducing the development costs. These models substantially reduce the material consumption and energy wastage and, also create a source for further analysis of the material under a different scenario, say in composites or structures.