Effects of velocity-based packing criteria on models of alloy solidification with free floating solid

A. Plotkowski, Matthew J.M. Krane

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In many solidification processes, particularly in the presence of grain refiner, solid grains initially form as free floating particles suspended within the liquid metal. As these grains continue to grow in number and size, their interactions cause them to form a permeable rigid solid structure. The majority of these models for equiaxed solidification assume that the transition from a slurry of particles to a rigid solid structure occurs at a fixed, uniform solid fraction. This approach does not include the influence of the local velocity field on the likelihood of packing. The present study investigates the effects of three different methods of including the solid particle velocity into packing rules and applies them to simulations of static castings. The advantages and disadvantages of these approaches are discussed in relation to the more common constant packing fraction model.

Original languageEnglish
Title of host publicationCFD Modeling and Simulation in Materials Processing, held at the TMS 2016 Annual Meeting and Exhibition, 2016
EditorsAdrian S. Sabau, Koulis Pericleous, Lifeng Zhang, Miaoyong Zhu, Andreas Ludwig, Laurentiu Nastac, Brian G. Thomas, Herve Combeau
PublisherSpringer International Publishing
Pages151-158
Number of pages8
ISBN (Print)9783319651323
DOIs
StatePublished - 2016
Externally publishedYes
EventInternational Symposium on CFD Modeling and Simulation in Materials Processing, 2016 - Nashville, United States
Duration: Feb 14 2016Feb 18 2016

Publication series

NameMinerals, Metals and Materials Series
VolumePart F2
ISSN (Print)2367-1181
ISSN (Electronic)2367-1696

Conference

ConferenceInternational Symposium on CFD Modeling and Simulation in Materials Processing, 2016
Country/TerritoryUnited States
CityNashville
Period02/14/1602/18/16

Keywords

  • Equiaxed solidification
  • Finite volume
  • Particle attachment

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