RESEARCH
Thermodynamics-based material design
Continuum
Mesoscale
Atomistic
Multiscale analysis of microstructures and deformation behavior
Deformation mechanisms-informed design of material design and process optimization
Advanced High Strength Steel
We develop advanced high-strength steel by adjusting the chemical composition and thermomechanical processing. We currently focus on developing intermetallic-strengthened medium Mn steel and lean alloyed medium Mn steel, which are processed through intercritical annealing, quenching and partitioning (Q&P), and the process leading to chemical heterogeneity. We carefully control the fraction, morphology, and chemical composition of austenite, as they directly influence the mechanical properties of the steel.
B2 containing medium Mn steel
Q&P processed lean-alloyed medium Mn steel
Mechanical properties of Q&P processed medium Mn steel
Equiaxed austenite
Lath austenite
Austenite deformation mechanisms
Materials for extreme environment
We develop materials for extreme environments such as cryogenic temperatures, high temperatures, and hydrogen environments. We aim to develop cost-effective ferrous alloys with superior cryogenic mechanical properties, surpassing the property-to-cost ratio of austenitic stainless steel. We also research the microstructure and high-temperature mechanical properties of ferrous alloys used at elevated temperatures. To tackle the hydrogen embrittlement problem in structural materials, we perform fundamental research on the phase-specific behavior of materials in a hydrogen environment
Cryogenic mechanical properties and deformation mechanisms of ferrous alloys
Hydrogen embrittlement behavior and mechanisms of ferrous alloys