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Combined Effects of Grain Size Refinement and Dynamic Precipitation on Mechanical Properties of a New Magnesium Alloy

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Magnesium Technology 2017

Part of the book series: The Minerals, Metals & Materials Series ((MMMS))

Abstract

Two well-known methods for enhancing the strength and controlling the anisotropy in magnesium alloys are precipitation hardening and grain size refinement. In this study, both methods are combined in an attempt to achieve optimal strengthening and anisotropy control: this was done via severe plastic deformation using Equal Channel Angular Processing (ECAP) of a precipitation hardenable magnesium alloy, Mg–6Zn–0.6Zr–0.4Ag–0.2Ca (wt%), within the temperature range of 125–200 °C. ECAP specimens were processed along different routes, where mechanically several of the ECAP samples show ultra-high strength levels approaching 400 MPa. The roles of grain size, texture, and precipitate morphology on mechanical properties are systematically investigated. It is shown here that the resulting microstructures generally show a refined grain size around 500 nm with a complex distribution of Mg-Zn enriched precipitates, which via ECAP either dynamically precipitate or are redistributed from the starting condition.

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References

  1. J.-F. Nie, Precipitation and hardening in magnesium alloys. Metall. Mat. Trans. A 43, 3891–3939 (2012)

    Article  Google Scholar 

  2. C.L. Mendis, K. Oh-ishi, Y. Kawamura, T. Honma, S. Kamado, K. Hono, Precipitation-hardenable Mg–2.4Zn–0.1Ag–0.1Ca–0.16Zr (at.%) wrought magnesium alloy. Acta Mater. 57, 749–760 (2009)

    Article  Google Scholar 

  3. C.L. Mendis, K. Oh-ishi, K. Hono, Enhanced age hardening in a Mg–2.4at.% Zn alloy by trace additions of Ag and Ca. Scripta Mater. 57, 485–488 (2007)

    Article  Google Scholar 

  4. S.M. Razavi, D.C. Foley, I. Karaman, K.T. Hartwig, O. Duygulu, L.J. Kecskes, S.N. Mathaudhu, V.H. Hammond, Effect of grain size on prismatic slip in Mg–3Al–1Zn alloy. Scripta Mater. 67, 439–442 (2012)

    Article  Google Scholar 

  5. E. Dogan, I. Karaman, G. Ayoub, G. Kridli, Reduction in tension–compression asymmetry via grain refinement and texture design in Mg–3Al–1Zn sheets. Mater. Sci. Eng. A 610, 220–227 (2014)

    Article  Google Scholar 

  6. D.C. Foley, M. Al-Maharbi, K.T. Hartwig, I. Karaman, L.J. Kecskes, S.N. Mathaudhu, Grain refinement vs. crystallographic texture: mechanical anisotropy in a magnesium alloy. Scripta Mater. 64, 193–196 (2011)

    Article  Google Scholar 

  7. M. Lentz, A. Behringer, C. Fahrenson, I. Beyerlein, W. Reimers, Grain size effects on primary, secondary, and tertiary twin development in Mg-4 wt pct Li (-1 wt pct Al) alloys. Metall. Mat. Trans. A 45, 4737–4741 (2014)

    Article  Google Scholar 

  8. M.R. Barnett, N. Stanford, P. Cizek, A. Beer, Z. Xuebin, Z. Keshavarz, Deformation mechanisms in Mg alloys and the challenge of extending room-temperature plasticity. JOM 61, 19–24 (2009)

    Article  Google Scholar 

  9. E. Dogan, S. Wang, M.W. Vaughan, I. Karaman, Dynamic precipitation in Mg-3Al-1Zn alloy during different plastic deformation modes. Acta Mater. 116, 1–13 (2016)

    Article  Google Scholar 

  10. J.D. Robson, C. Paa-Rai, The interaction of grain refinement and ageing in magnesium–zinc–zirconium (ZK) alloys. Acta Mater. 95, 10–19 (2015)

    Article  Google Scholar 

  11. R.E. Barber, T. Dudo, P.B. Yasskin, K.T. Hartwig, Product yield for ECAE processing. Scripta Mater. 51, 373–377 (2004)

    Article  Google Scholar 

  12. E. Mostaed, M. Hashempour, A. Fabrizi, D. Dellasega, M. Bestetti, F. Bonollo, M. Vedani, Microstructure, texture evolution, mechanical properties and corrosion behavior of ECAP processed ZK60 magnesium alloy for biodegradable applications. J. Mech. Behav. Biomed. Mater. 37, 307–322 (2014)

    Article  Google Scholar 

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Texas A&M University, College Station, TX, USA

    M. W. Vaughan & I. Karaman

  2. Institut Für Werkstoffkunde (IW), Leibniz Universität Hannover, An der Universität 2, 30823, Hannover, Germany

    J. M. Seitz, R. Eifler & H. J. Maier

Authors
  1. M. W. Vaughan
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  2. J. M. Seitz
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  3. R. Eifler
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  4. H. J. Maier
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  5. I. Karaman
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Corresponding author

Correspondence to M. W. Vaughan .

Editor information

Editors and Affiliations

  1. Arizona State University , Tempe, Arizona, USA

    Kiran N. Solanki

  2. Lund University , Lund, Skåne Län, Sweden

    Dmytro Orlov

  3. Structural Materials Unit, National Inst for Materials Sci Structural Materials Unit, Tsukuba, Ibaraki, Japan

    Alok Singh

  4. IND LLC , South Jordan, Utah, USA

    Neale R. Neelameggham

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© 2017 The Minerals, Metals & Materials Society

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Vaughan, M.W., Seitz, J.M., Eifler, R., Maier, H.J., Karaman, I. (2017). Combined Effects of Grain Size Refinement and Dynamic Precipitation on Mechanical Properties of a New Magnesium Alloy. In: Solanki, K., Orlov, D., Singh, A., Neelameggham, N. (eds) Magnesium Technology 2017. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-52392-7_10

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