Improving Formability at Room temperature by Inhibiting Twin transfer
Magnesium alloys are of critical interest to the aerospace, automotive, and defense industries, but are currently limited in use due to poor ductility and formability at room temperature. Magnesium’s plastic anisotropy and lack of active slip systems under ambient conditions result in excessive twinning and rapid texture formation, ultimately resulting in brittle failure. This project seeks to investigate the ways intermetallic particles modify and inhibit twinning behavior within these alloys, and to determine the role these intermetallics play in generating localized stress states that can activate additional slip systems at room temperature.
Research Activities: Mechanical Testing, Scanning Electron Microscopy, Electron Backscatter Diffraction, Twinning Analysis, Full-Field Viscoplastic Fast Fourier Transform (VPFFT) modeling
Group Members Involved: Benjamin Anthony
Recent Publications:
- B. Anthony & V.M. Miller. A “step” in the right direction: Quantifying error in twinning analysis due to EBSD scan resolution. Scripta Materialia 242 (2024). https://doi.org/10.1016/j.scriptamat.2023.115929
- B. Anthony, B. Leu, I.J. Beyerlein, & V.M. Miller. Deformation twin interactions with grain boundary particles in multi-phase magnesium alloys. Acta Materialia 219 (2021). https://doi.org/10.1016/j.actamat.2021.117225