69 citations · 227 across the 10 of their papers we have counts for
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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…
Multi-phase-field analysis of short-range forces between diffuse interfaces
N. Wang, R. Spatschek, A. Karma
We characterize both analytically and numerically short-range forces between spatially diffuse interfaces in multi-phase-field models of polycrystalline materials. During late-stag…
Pattern Stability and Trijunction Motion in Eutectic Solidification
S. Akamatsu, M. Plapp, G. Faivre +1
We demonstrate by both experiments and phase-field simulations that lamellar eutectic growth can be stable for a wide range of spacings below the point of minimum undercooling at l…
Phase-field modeling of microstructural pattern formation during directional solidification of peritectic alloys without morphological instability
Tak Shing Lo, Alain Karma, Mathis Plapp
During the directional solidification of peritectic alloys, two stable solid phases (parent and peritectic) grow competitively into a metastable liquid phase of larger impurity con…
Eutectic Colony Formation: A Stability Analysis
Mathis Plapp, Alain Karma
Experiments have widely shown that a steady-state lamellar eutectic solidification front is destabilized on a scale much larger than the lamellar spacing by the rejection of a dilu…