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Title: A constitutive model for casting magnesium alloy ZL101 based on the analysis of spherical void evolution
Authors: Chen, B.
Peng, X.H.
Fan, J.H.
Wang, J.G. 
Sun, S.T.
Keywords: Casting magnesium alloy
Constitutive model
Spherical void
Void volume fraction
Issue Date: Nov-2008
Citation: Chen, B., Peng, X.H., Fan, J.H., Wang, J.G., Sun, S.T. (2008-11). A constitutive model for casting magnesium alloy ZL101 based on the analysis of spherical void evolution. Computational Materials Science 44 (1) : 190-194. ScholarBank@NUS Repository.
Abstract: Since casting magnesium alloys contain numerous spherical microvoids, the aggregate of microvoids and matrix can be analyzed using a representative volume element. The representative element can be idealized as a cell containing a spherical void. Through the analysis on the velocity field of the spherical void-cell model, the strain field of the spherical void-cell model was obtained. Defining an intrinsic time that involves the hardening due to plastic deformation and the softening due to voids, a new endochronic model was derived for the elastoplastic and damage behavior of casting magnesium alloys. The corresponding numerical algorithm and finite element procedure were developed and applied to the analysis of the elastoplastic response and the porosity of casting magnesium alloy ZL101. The computed results show satisfactory agreement with experiments. © 2008 Elsevier B.V. All rights reserved.
Source Title: Computational Materials Science
ISSN: 09270256
DOI: 10.1016/j.commatsci.2008.01.015
Appears in Collections:Staff Publications

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