Modeling fracture properties in a die-cast AM60B magnesium alloy II—The effects of the size and location of porosity determined using finite element simulations

This is the second of two papers that analyze the effects of porosity upon the fracture properties of the die-cast AM60B magnesium alloy. This paper investigates the effects of the size and location of porosity using finite element simulations. Failure models were developed for the cases of a pore c...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2009-12, Vol.527 (1), p.32-37
Main Authors: Weiler, J.P., Wood, J.T.
Format: Article
Language:English
Subjects:
Applied sciences
Die-casting
Exact sciences and technology
Finite element simulations
Fracture properties
Fractures
Magnesium alloy
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
Porosity
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Summary:This is the second of two papers that analyze the effects of porosity upon the fracture properties of the die-cast AM60B magnesium alloy. This paper investigates the effects of the size and location of porosity using finite element simulations. Failure models were developed for the cases of a pore centered in the cross-section, a volume of material intact in the casting, and samples removed from the casting for die-cast materials. The predicted fracture strains for a centered pore compared favourably with a previously developed analytical model. The fracture strains of samples removed from an AM60B casting and characterized using X-ray tomography were predicted with an average error percentage of 6.7%.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2009.08.061