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Thermomechanical processing of an ultralight Mg-14Li-1Al alloy

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Abstract

In the present work, isothermal hot pressing of a Mg-14Li-Al (wt%) alloy, considered as the lightest metallic alloy, is studied through microstructure, hot compression flow stress curve, and indentation load/displacement plots. The main objective is to correlate the microstructure with the small-scale properties and processing parameters (i.e., thermomechanical parameters like temperature and strain rate). The thermomechanical cycle consists of uniaxial compression tests at temperatures of 250 °C, 350 °C, and 450 °C and strain rates of 1, 0.1, 0.01, and 0.001/s using a Gleeble® 3500 thermal-mechanical simulation testing system. True stress-true strain curves plotted from the thermomechanical tests were used to assess the working behavior of the materials and to analyze and to understand the microstructure evolution which reflects intrinsic mechanical properties. Finally, a comparison has been done in between our previously published article Mg-3.5Li-Al (International Journal of Lightweight Materials and Manufacture 2 (2019) 217–226) and the current work on Mg-14Li-Al alloy in terms of the microstructural changes, hot compression stress-strain curves, and the nanoindentation load/displacement response.

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Acknowledgments

The last author would like to acknowledge the research grant received from ND EPSCoR.

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Authors and Affiliations

  1. Materials Science & Engineering, Virginia Tech, Blacksburg, VA, USA

    Rezawana Islam

  2. Department of Mechanical Engineering, University of Memphis, Memphis, TN, USA

    Amir Hadadzadeh

  3. College of Engineering and Physical Sciences, University of Guelph, Guelph, Canada

    Mary Wells

  4. Micro/Nano-Mechanics Laboratory, Department of Mechanical, Industrial and Manufacturing Engineering, University of Toledo, Toledo, OH, USA

    Meysam Haghshenas

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  1. Rezawana Islam
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  2. Amir Hadadzadeh
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  3. Mary Wells
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  4. Meysam Haghshenas
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Correspondence to Meysam Haghshenas.

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Islam, R., Hadadzadeh, A., Wells, M. et al. Thermomechanical processing of an ultralight Mg-14Li-1Al alloy. Int J Adv Manuf Technol 110, 3221–3239 (2020). https://doi.org/10.1007/s00170-020-06032-z

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  • DOI: https://doi.org/10.1007/s00170-020-06032-z

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