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Title: An integrated two-dimensional modeling method for predicting ductility of thin-walled die cast magnesium

Journal Article · · International Journal of Fracture
 [1];  [1]; ORCiD logo [2];  [3];  [4];  [5];  [5]
  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Purdue Univ., West Lafayette, IN (United States)
  4. Tsinghua Univ., Beijing (People’s Republic of China)
  5. Ford Motor Co., Dearborn, MI (United States)
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In this paper, a two-dimensional (2D) microstructure-based modeling method is developed in order to predict the ductility of a thin-walled high pressure die cast magnesium (Mg) by considering the three-dimensional (3D) thru-thickness pore distributions. For this purpose, a series of 3D synthetic microstructure-based finite element models and the corresponding 2D models are first generated with various pore volume fractions, pore size distributions and pore shapes. The input material properties for the 2D models are determined based on the 3D cubic model with a spherical pore and the generalized Neuber’s rule. Based on the resulting ductility of the 3D and 2D models, a 3D/2D ductility correlation curve is developed as a function of the characteristics/shape of the input fracture strain curve used in the 3D model. The validity of the ductility correlation curve is examined with casting samples with actual microstructures. Here, the results show that the suggested 2D modeling methodology can be used together with the ductility correlation curve in predicting the ductility of thin-walled Mg castings.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1570892
Journal Information:
International Journal of Fracture, Journal Issue: 1; ISSN 0376-9429
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 3 works
Citation information provided by
Web of Science

References (36)

An Investigation of the Effects of Cast Skin on the Mechanical Properties of an AM60 Die-Cast Magnesium Alloy journal January 2015
Influence of porosity on the fatigue limit of die cast magnesium and aluminium alloys journal March 2003
Relationship between internal porosity and fracture strength of die-cast magnesium AM60B alloy journal March 2005
Variability in the tensile ductility of high-pressure die-cast AM50 Mg-alloy journal October 2005
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 journal December 2009
Modeling fracture properties in a die-cast AM60B magnesium alloy I—Analytical failure model journal December 2009
On the effect of macroporosity on the tensile properties of the Al-7%Si-0.4%Mg casting alloy journal June 1995
Effect of process parameters on porosity distributions in high-pressure die-cast AM50 Mg-alloy journal July 2006
A comprehensive failure model for crashworthiness simulation of aluminium extrusions journal September 2004
Prediction of tensile ductility in porous materials journal July 2002
Tensile properties of high-pressure die-cast AM60 and AZ91 magnesium alloys on microporosity variation journal December 2007
Dependence of tensile properties of AM60 magnesium alloy on microporosity and grain size journal April 2007
Tensile instability and necking in materials with strain hardening and strain-rate hardening journal December 1977
Effects of Pore Distributions on Ductility of Thin-Walled High Pressure Die-Cast Magnesium conference April 2013
Casting defects and the tensile properties of an AlSiMg alloy journal December 1996
Effect of macro-porosity on the strength and ductility of cast Al7Si0.3Mg alloy journal September 1986
Calibration and evaluation of seven fracture models journal April 2005
Quantitative fractographic analysis of variability in tensile ductility of a squeeze cast Al–Si–Mg base alloy journal January 2005
The correlation between microstructure and mechanical properties of high-pressure die-cast AM50 alloy journal May 2009
Predicting the influence of pore characteristics on ductility of thin-walled high pressure die casting magnesium journal June 2013
Modeling the tensile failure of cast magnesium alloys journal October 2012
Development of the as-cast microstructure in magnesium–aluminium alloys journal February 2001
The Influence of Al Content and Thickness on the Microstructure and Tensile Properties in High-Pressure Die Cast Magnesium Alloys journal January 2017
A Generalized Method for Estimating Multiaxial Elastic-Plastic Notch Stresses and Strains, Part 2: Application and General Discussion journal October 1985
A Generalized Method for Estimating Multiaxial Elastic-Plastic Notch Stresses and Strains, Part 1: Theory journal October 1985
A Mixed-Mode Fracture Criterion for AHSS Cracking Prediction at Large Strain journal April 2011
Microstructure based modeling of β phase influence on mechanical response of cast AM series Mg alloys journal September 2014
Predicting Stress vs. Strain Behaviors of Thin-Walled High Pressure Die Cast Magnesium Alloy with Actual Pore Distribution journal January 2016
The deformation and fracture behaviour of an AlSiMg casting alloy journal July 1995
Influence of Strain Rate and Stress State on the Mechanical Behavior of Die-Casting AM60 Magnesium Alloy
  • Gu, Gongyao; Lin, Shaoting; Meng, Yan
  • ASME 2011 International Mechanical Engineering Congress and Exposition, Volume 8: Mechanics of Solids, Structures and Fluids; Vibration, Acoustics and Wave Propagation https://doi.org/10.1115/IMECE2011-65196
conference August 2012
Magnesium journal April 2001
An Engineering Approach to Predict Fracture and Tearing conference April 2011
The Role of Microstructure on Ductility of Die-Cast AM50 and AM60 Magnesium Alloys journal February 2007
Simple formulae for the stress concentration factor for two- and three-dimensional holes in finite domains journal April 2002
Fracture Modeling of AHSS in Component Crush Tests journal April 2011
Quantitative fractographic analysis of variability in the tensile ductility of high-pressure die-cast AE44 Mg-alloy journal July 2006

Figures / Tables (17)

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Related Subjects

36 MATERIALS SCIENCE
Mg castings
Ductility
Microstructure
Porosity
Finite element analysis (FEA)
Fracture strain