EUROPEAN CONGRESS AND EXHIBITION ON ADVANCED MATERIALS AND PROCESSES - EUROMAT 2021

A novel adaptive meshless solution procedure is applied for the analysis of the mesh-induced anisotropy in the phase-field modelling of dendritic solidification of dilute binary alloys. The adaptive solution procedure is based on the dynamic quadtree domain decomposition which divides the computational domain into quadtree sub-domains of different size. Each quadtree sub-domain has its own...

A three-phase mixed columnar-equiaxed solidification model coupling mold electromagnetic stirring (M-EMS) was presented to study the initial solidification in the mold region of billet continuous casting (195 mm × 195 mm). This study focuses on the effect of M-EMS on the dissipation of superheat and its further impact on the formation of equiaxed zone. Heterogeneous nucleation and...

Phase-field method has been widely used as the most accurate dendrite growth model. One of the most serious issues in phase-field dendrite growth simulations is a luck of material properties. In particular, interfacial properties, such as the solid-liquid interfacial energy and mobility and those anisotropy, are very important to express the dendrite morphology. However, there is no conclusive...

Dendrite growth is the key to understand the formation process of solidification structures. Significant contributions from many previous studies have been gradually revealing the detailed mechanism of dendrite growth. In particular, recent in-situ observations using X-ray diffraction and quantitative phase-field simulations are very powerful schemes for understanding dendrite growth in...