6 papers
Dealloying by peritectic melting
Mingwang Zhong, Alain Karma
Peritectic melting of Ti--Ag has been shown experimentally to form bicontinuous structures, but the mechanism remains unclear. Here we use phase-field simulations to show that thes…
Microstructure evolution during rapid solidification of hypoeutectic Al-Ag alloys near absolute stability
Brian Rodgers, Mingwang Zhong, Trevor Lyons +4
Microsegregation-free microstructures can form by solidifying at velocities beyond the absolute stability limit (), where solute partitioning is suppressed by a sta…
Benchmarking of Massively Parallel Phase-Field Codes for Directional Solidification
Jiefu Tian, David Montiel, Kaihua Ji +4
We present a detailed benchmark comparing two state-of-the-art phase-field implementations for simulating alloy solidification under experimentally relevant conditions. The study i…
Phase-Field Model of Freeze Casting
Kaihua Ji, Alain Karma
Directional solidification of water-based solutions has emerged as a versatile technique for templating hierarchical porous materials. However, the underlying mechanisms of pattern…
Parity Breaking at Faceted Crystal Growth Fronts during Ice Templating
Kaihua Ji, Alain Karma
Directional solidification of water-based solutions has emerged as a versatile technique to template hierarchical porous materials, but this nonequilibrium process remains incomple…
Phase-field model of alloy solidification far from chemical equilibrium at the solid-liquid interface
Kaihua Ji, Mingwang Zhong, Alain Karma
We further develop a recently introduced phase-field model of rapid alloy solidification [Ji et al., PRL 2023]. This model utilizes enhanced solute diffusivity within the spatially…