Embedded Files
Research Fields
Advanced powder metallurgy (PM) processes
Powder metallurgy encompasses the entire process of compacting and sintering metal powders, followed by subsequent post-processing, all conducted in the solid state without melting. This approach enables the fabrication of material systems comprising elemental combinations that are difficult or impractical to achieve through conventional casting methods. Alloys manufactured using powder metallurgy makes it difficult to predict microstructure and properties.
Identifying the potential of powder metallurgy processes-microstructures-properties to provide design guidelines for functional materials.
Conducting through a theoretical and machine learning-based approach and application.
High-entropy alloys (HEAs)
High-entropy alloys (HEAs) are equal or relatively large proportions of five or more elements. HEAs require material design based on a thermodynamic approach, and the desired properties can be secured through thermodynamic variable control and composition design. Through this, HEAs can be tailored to exhibit mechanical and fucntional properties suited to specific environments.
Designing HEAs to achieve targeted specific properties, while elucidating the underlying microstructure-property mechanisms.
Optimizing lightweight high-entropy alloys (LWHEAs) incorporating low-density elements to enhance specific strength, and refractory high-entropy alloys (RHEAs) to improve high-temperature strength and structural stability.
Facilitating property prediction and accelerating the optimization process through the use of machine learning to predict alloy crystal structures and microstructures.
Metal additive manufacturing
Based on metal 3D printing (LPBF) technologies, our research aims to develop process and microstructure control techniques that enable the manufacturing of functional metal components. In the domain of additive manufacturing, the process of localized melting and solidification is repeated layer by layer. During this process, anisotropic organization, residual stresses, and pores can occur.
Systematically identify the relationship between process-microstructure-performance through quantitatively elucidate the changes in mechanical properties through correlation with phase transformation.
Experiments and simulations such as laser power, scan speed, and energy density affect the morphology and solidification behavior of the melt pool.
Reactive high energy density materials (HEDM)
High energy density materials (HEDMs) are material that can serve both as structural materials and as sources of chemical energy. HEDM can convert its inherent chemical energy into a sudden burst of heat energy, which can be released by an external energy source like heat of kinetic energy. When energy is induced from the outside, the materials are ignited and have a self exothermic chain reaction.
Based on intermetallic compounds reaction, lowering the ignition temperature and enhancing reaction efficiency.
Utilize powder metallurgy process to design and optimize high energy density materials for both structural and energetic applications.
Page updated
Report abuse