Abstract
Unlike Aluminum (Al) alloys, precipitation strengthening of Magnesium (Mg) alloys has proven challenging. Precipitate density is typically too low, and precipitate size is often too large and elongated to enhance the resistance to plastic deformation significantly. Mimicking recent work in Al alloys, we are exploring how low-temperature plastic deformation can enhance the density, size, and morphology of common intermetallic particles and thereby lead to significant hardening in Mg alloys. The low temperatures tend to favor nucleation overgrowth, while the deformation provides vacancies and dislocations that can assist nucleation. Using equal channel angular extrusion, and moderate temperatures, we explore the processing and thermodynamic factors controlling nucleation and growth of precipitates in Mg–Al and Mg–Zn binary alloys.
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References
X.L. Ma, S. Eswarappa Prameela, P. Yi, M. Fernandez, N.M. Krywopusk, L.J. Kecskes, T. Sano, M.L. Falk, T.P. Weihs, Acta Mater. 172 (2019) 185–199.
S.R. Agnew, J.F. Nie, Scr. Mater. 63 (2010) 671–673.
J. Robson, Metall. Mater. Trans. A 45 (2014) 5226–5235.
J.D. Robson, N. Stanford, M.R. Barnett, Scr. Mater. 63 (2010) 823–826.
N. Stanford, J. Geng, Y.B. Chun, C.H.J. Davies, J.F. Nie, M.R. Barnett, Acta Mater. 60 (2012) 218–228.
J.F. Nie, B.C. Muddle, H.I. Aaronson, S.P. Ringer, J.P. Hirth, Metall. Mater. Trans. A 33 (2002) 1649–1658.
S. Eswarappa Prameela, P. Yi, V. Liu, B. Medeiros, L.J. Kecskes, M.L. Falk, and T.P. Weihs, Effect of Second Phase Particle Size on the Recrystallized Microstructure of Mg–Al Alloys Following ECAE Processing, Magnesium Technology 2020. https://doi.org/10.1007/978-3-030-36647-6_27
J.F. Nie, B.C. Muddle, Mater. Sci. Eng. A 319–321 (2001) 448–451.
W. Sun, Y. Zhu, R. Marceau, L. Wang, Q. Zhang, X. Gao, C. Hutchinson, Science 363 (2019) 972–975.
P. Yi, R.C. Cammarata, M.L. Falk, Model. Simul. Mater. Sci. Eng. 25 (2017) 085001.
J.F. Nie, B.C. Muddle, Acta Mater. 48 (2000) 1691–1703.
X. Gao, J.F. Nie, Scr. Mater. 58 (2008) 619–622.
J.-F. Nie, Metall. Mater. Trans. A 43 (2012) 3891–3939.
D. Mallick, S. Eswarappa-Prameela, V. Kannan, M. Zhao, J. Lloyd, T. Weihs, KT Ramesh, On the Role of Texture and Precipitate Orientation in Spall Failure of a Rolled Magnesium Alloy, in Bulletin of the American Physical Society, 2019, vol. Volume 64, Number 8. (http://meetings.aps.org/Meeting/SHOCK19/Session/1C.2)
J.B. Clark, Acta Metall. 16 (1968) 141–152.
Prameela, S. Eswarappa and Yi, Peng and Mediros, Beatriz and Liu, Vance and Keckes, Laszlo J. and Falk, Michael L. and Weihs, Timothy P., Deformation Assisted Nucleation of Continuous Nanoprecipitates in Mg-Al Alloys (11 11, 2019). Available at SSRN: https://ssrn.com/abstract=3484667
Ma, X., Eswarappa-Prameela, S., Krywopusk, N., Kecskes, L. J., Sano, T., & Weihs, T. P. (2018). Dynamic Precipitation in a Binary Mg-Al Alloy During Equal Channel Angular Extrusion (ECAE). Microscopy and Microanalysis, 24(S1), 2222–2223
J.F. Nie, Acta Mater. 56 (2008) 3169–3176.
J.F. Nie, Scr. Mater. 48 (2003) 1009–1015.
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Eswarappa Prameela, S., Weihs, T.P. (2020). Deformation Driven Precipitation in Binary Magnesium Alloys. In: Jordon, J., Miller, V., Joshi, V., Neelameggham, N. (eds) Magnesium Technology 2020. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-36647-6_26
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DOI: https://doi.org/10.1007/978-3-030-36647-6_26
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