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

Journal Article · Tue Sep 30 00:00:00 EDT 2014 · Computational Materials Science, 92:353-3612

DOI:https://doi.org/10.1016/j.commatsci.2014.03.010· OSTI ID:1167602

Barker, Erin I.; Choi, Kyoo Sil; Sun, Xin; Deda, Erin; Allison, John; Li, Mei; Forsmark, Joy; Zindel, Jacob; Godlewski, Larry

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.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1167602
• Report Number(s): PNNL-SA-98650; 47721; VT0505000
• Journal Information: Computational Materials Science, 92:353-3612, Journal Name: Computational Materials Science, 92:353-3612
• Country of Publication: United States
• Language: English

Related Subjects

Cast Magnesium alloys
microstructure
plasticity
Eutectic phase
Volume Fraction
Morphology
Environmental Molecular Sciences Laboratory