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Title: Microstructure Based Modeling of β Phase Influence on Mechanical Response of Cast AM Series Mg Alloys

Magnesium alloys have become popular alternatives to aluminums and steels for the purpose of vehicle light-weighting. However, Mg alloys are hindered from wider application due to limited ductility as well as poor creep and corrosion performance. Understanding the impact of microstructural features on bulk response is key to improving Mg alloys for more widespread use and for moving towards truly predicting modeling capabilities. This study focuses on modeling the intrinsic features, particularly volume fraction and morphology of beta phase present, of cast Mg alloy microstructure and quantifying their impact on bulk performance. Computational results are compared to experimental measurements of cast plates of Mg alloy with varying aluminum content.
Authors:
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Publication Date:
OSTI Identifier:
1167602
Report Number(s):
PNNL-SA-98650
47721; VT0505000
DOE Contract Number:
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Computational Materials Science, 92:353-3612
Research Org:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
Cast Magnesium alloys; microstructure; plasticity; Eutectic phase; Volume Fraction; Morphology; Environmental Molecular Sciences Laboratory