Modeling of casting defects in an integrated computational materials engineering approach

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

Abstract

To accelerate the introduction of new cast alloys, the modeling and simulation of multiphysical phenomena needs to be considered in the design and optimization of mechanical properties of cast components. The required models related to casting defects, such as microporosity and hot tears, are reviewed. Three aluminum alloys are considered A356, 356 and 319. The data on calculated solidification shrinkage is presented and its effects on microporosity levels discussed. Examples are given for predicting microporosity defects and microstructure distribution for a plate casting. Models to predict fatigue life and yield stress are briefly highlighted here for the sake of completion and to illustrate how the length scales of the microstructure features as well as porosity defects are taken into account for modeling the mechanical properties. The data on casting defects, including microstructure features, is crucial for evaluating the final performance-related properties of the component.

Original languageEnglish
Title of host publicationAdvances in the Science and Engineering of Casting Solidification
Subtitle of host publicationAn MPMD Symposium Honoring Doru Michael Stefanescu - Held During TMS 2015 144th Annual Meeting and Exhibition
EditorsLaurentiu Nastac, Baicheng Liu, Hasse Fredriksson, Jacques Lacaze, Chun-Pyo Hong, Adrian V. Catalina, Andreas Buhrig-Polaczek, Charles Monroe, Adrian S. Sabau, Roxana Elena Ligia Ruxanda, Alan Luo, Subhayu Sen, Attila Dioszegi, Attila Dioszegi
PublisherMinerals, Metals and Materials Society
Pages231-240
Number of pages10
ISBN (Electronic)9781119082385
DOIs
StatePublished - 2015
EventAdvances in the Science and Engineering of Casting Solidification: An MPMD Symposium Honoring Doru Michael Stefanescu - TMS 2015 144th Annual Meeting and Exhibition - Orlando, United States
Duration: Mar 15 2015Mar 19 2015

Publication series

NameTMS Annual Meeting
Volume2015-March

Conference

ConferenceAdvances in the Science and Engineering of Casting Solidification: An MPMD Symposium Honoring Doru Michael Stefanescu - TMS 2015 144th Annual Meeting and Exhibition
Country/TerritoryUnited States
CityOrlando
Period03/15/1503/19/15

Keywords

  • Hot tearing
  • Microporosity
  • Modeling
  • Nucleation
  • Simulation
  • Yield stress

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