Numerical Simulation of Casting Solidification

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Metal Casting, Forming and Heat Treatment".

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 2995

Special Issue Editor


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Guest Editor
School of Sciences, Chang'an University, Xi'an 710064, China
Interests: solidification; molecular dynamics simulation; nucleation; metallic glasses; nanostructure; mechanical behavior

Special Issue Information

Dear Colleagues,

With the development of numerical techniques and computer technology, the simulation of metal casting is playing an increasingly significant role in material preparation and processing. The numerical simulation of casting solidification allows modern foundries to shift from conventional trial-and-error to proof-of-concept approach in the product development paradigm. It may optimize craft design, shorting trial cycle, cut the cost, decrease casting defect, and assure the casting quality. The simulation of casting solidification is to generate a temporal and spatial description of the movement of the solid-liquid (S/L) interface, and consequently to predict the solidification microstructure related to product qualities and material properties. When simulating the solidification and casting phenomena, three length scale ranging from atomistic models to micro-scale and macro-scale process models are usually involved.

This Special Issue on Numerical Simulation of Casting Solidification is intended to highlight the latest developments in the field by compiling a comprehensive collection of papers on various aspects of processing and technology innovation. The scope spans a wide range of processes (e.g., traditional and advanced casting, liquid metal engineering) and research approaches (e.g., theoretical, experimental, computational). Topics of interest include, but are not restricted to, the following:

  • Macro-scale simulation including macrosegregation, shrinkage, cavity, cracks, etc.
  • Micro-scale simulation including as-cast grain structure, dendrite morphology, microsegregation and consequent precipitation, etc.
  • Nano-scale simulation including nucleation, interfacial energies, etc.

Prof. Dr. Zhaoyang Hou
Guest Editor

Manuscript Submission Information

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Keywords

  • solidification
  • casting
  • simulation
  • microstructure evolution
  • phase transformation
  • segregation
  • dendrite morphology
  • cracks

Published Papers (2 papers)

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Research

20 pages, 6537 KiB  
Article
Isogeometric Analysis-Based Solidification Simulation and an Improved Way to Apply Supercooling on Droplet Boundary
by Jiangping Xu, Tingyu Yan, Yang Li, Zhenyuan Yu, Yun Wang and Yuan Wang
Metals 2022, 12(11), 1836; https://doi.org/10.3390/met12111836 - 28 Oct 2022
Viewed by 1403
Abstract
The classic finite difference method (FDM) has been successfully adopted in the simulation of dendritic solidification, which is based on phase-field theory. Nevertheless, special strategies of boundary integral and projection are required for applying a supercooling rate to a droplet surface. In the [...] Read more.
The classic finite difference method (FDM) has been successfully adopted in the simulation of dendritic solidification, which is based on phase-field theory. Nevertheless, special strategies of boundary integral and projection are required for applying a supercooling rate to a droplet surface. In the present study, isogeometric analysis (IGA) is employed to discretize the phase-field equation due to the two advantages of Non-Uniform Rational B-Splines (NURBS) basis functions, namely an arbitrary order of derivatives and exact description of complex geometry. In addition, an improved, easy way to apply the supercooling rate on a melt droplet surface is proposed to avoid the integral and projection of the cellular boundary required in FDM. Firstly, dendrite growth in a square computational domain is simulated to verify the performance of IGA. Then, the influences of latent heat, anisotropic mode and initial angle on the dendrite shapes are studied by the presented IGA, FDM and finite element method (FEM). Finally, dendritic solidification in a droplet under different cooling rates along irregular boundaries is performed by the proposed IGA. Full article
(This article belongs to the Special Issue Numerical Simulation of Casting Solidification)
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16 pages, 5313 KiB  
Article
Numerical Simulation of Transport Phenomena in Directional Solidification Castings with Changeable Cross-Section and Solidification Interface Control
by Yanbin Zhang, Bin Zhu, Haijun Jiang, Li Tan, Yu Weng, Yi Yang and Ling Qin
Metals 2022, 12(10), 1694; https://doi.org/10.3390/met12101694 - 10 Oct 2022
Viewed by 1296
Abstract
The roles of traveling magnetic fields (TMFs) within the transport phenomena during the directional solidification of nickel-based superalloys were simulated. The evolution of thermal field, flow field and solid-liquid interface morphology during the solidification process under both natural and forced convection conditions were [...] Read more.
The roles of traveling magnetic fields (TMFs) within the transport phenomena during the directional solidification of nickel-based superalloys were simulated. The evolution of thermal field, flow field and solid-liquid interface morphology during the solidification process under both natural and forced convection conditions were also simulated and compared. The strength of TMFs window that suppresses the flow of the interfacial front in the melt was quantified. The association between flow velocity at the interface front and defect formation was discussed. Full article
(This article belongs to the Special Issue Numerical Simulation of Casting Solidification)
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