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Title: Modeling of interdendritic porosity defects in an integrated computational materials engineering approach for metal casting

Modeling and simulation of multiphysical phenomena needs to be considered in the design and optimization of mechanical properties of cast components in order to accelerate the introduction of new cast alloys. The data on casting defects, including microstructure features, is crucial for evaluating the final performance-related properties of the component. Here in this paper, the required models for the prediction of interdendritic casting defects, such as microporosity and hot tears, are reviewed. The data on calculated solidification shrinkage is presented and its effects on microporosity levels discussed. Numerical simulation results for microporosity are presented for A356, 356 and 319 aluminum alloys using ProCAST TM software. The calculated pressure drop of the interdendritic liquid was observed to be quite significant and the regions of high-pressure drop can be used as an indicator of the severity of interdendritic microporosity defects.
Authors:
 [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Grant/Contract Number:
AC05-00OR22725
Type:
Accepted Manuscript
Journal Name:
International Journal of Cast Metals Research
Additional Journal Information:
Journal Volume: 29; Journal Issue: 5; Journal ID: ISSN 1364-0461
Publisher:
Taylor & Francis
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); Work for Others (WFO)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 97 MATHEMATICS AND COMPUTING; 42 ENGINEERING; Microporosity; Simulation; Modelling; Nucleation; Interdendritic porosity; Hot tearing
OSTI Identifier:
1343499

Sabau, Adrian S. Modeling of interdendritic porosity defects in an integrated computational materials engineering approach for metal casting. United States: N. p., Web. doi:10.1080/13640461.2016.1161288.
Sabau, Adrian S. Modeling of interdendritic porosity defects in an integrated computational materials engineering approach for metal casting. United States. doi:10.1080/13640461.2016.1161288.
Sabau, Adrian S. 2016. "Modeling of interdendritic porosity defects in an integrated computational materials engineering approach for metal casting". United States. doi:10.1080/13640461.2016.1161288. https://www.osti.gov/servlets/purl/1343499.
@article{osti_1343499,
title = {Modeling of interdendritic porosity defects in an integrated computational materials engineering approach for metal casting},
author = {Sabau, Adrian S.},
abstractNote = {Modeling and simulation of multiphysical phenomena needs to be considered in the design and optimization of mechanical properties of cast components in order to accelerate the introduction of new cast alloys. The data on casting defects, including microstructure features, is crucial for evaluating the final performance-related properties of the component. Here in this paper, the required models for the prediction of interdendritic casting defects, such as microporosity and hot tears, are reviewed. The data on calculated solidification shrinkage is presented and its effects on microporosity levels discussed. Numerical simulation results for microporosity are presented for A356, 356 and 319 aluminum alloys using ProCASTTM software. The calculated pressure drop of the interdendritic liquid was observed to be quite significant and the regions of high-pressure drop can be used as an indicator of the severity of interdendritic microporosity defects.},
doi = {10.1080/13640461.2016.1161288},
journal = {International Journal of Cast Metals Research},
number = 5,
volume = 29,
place = {United States},
year = {2016},
month = {4}
}