NDLI: Advanced modeling of shrinkage porosity in castings

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Advanced modeling of shrinkage porosity in castings

Content Provider	Scilit
Author	Esser, P. Schankies, C. Khalajzadeh, V. Beckermann, C.
Copyright Year	2020
Description	Journal: Iop Conference Series: Materials Science and Engineering Porosity due to solidification shrinkage is a troublesome defect in all types of metal castings. It limits the performance of cast components by adversely affecting the material’s strength, fatigue and creep properties. By reliably predicting porosity in casting process simulation, it can be minimized or eliminated. Here, a newly developed model for predicting porosity is presented. The model is based on the recent discovery that all shrinkage porosity nucleates and grows in regions of a casting where the solid fraction is the lowest. It calculates the feeding flows and pressure distribution in the liquid while accounting for the liquid density variation during cooling and solidification. It predicts the location, extent and amount of all types of shrinkage porosity in a casting, including riser pipes and large internal holes, surface sinks, and distributed micro-shrinkage. The model is numerically implemented in a standard casting simulation code. Comparisons to measurements in specially made steel castings demonstrate the capability of the model to accurately predict various types of shrinkage porosity.
Related Links	https://iopscience.iop.org/article/10.1088/1757-899X/861/1/012022/pdf
ISSN	17578981
e-ISSN	1757899X
DOI	10.1088/1757-899x/861/1/012022
Journal	Iop Conference Series: Materials Science and Engineering
Issue Number	1
Volume Number	861
Language	English
Publisher	IOP Publishing
Publisher Date	2020-05-01
Access Restriction	Open
Subject Keyword	Journal: Iop Conference Series: Materials Science and Engineering Manufacturing Engineering Castings Porosity Shrinkage Porosity in Castings Predicting Porosity
Content Type	Text
Resource Type	Article

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