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Synthesis and analysis of Mg–3%Al alloy nanocomposites reinforced by RGO.

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Title: Synthesis and analysis of Mg–3%Al alloy nanocomposites reinforced by RGO.
Authors: Kumar, Pravir1 (AUTHOR), Mallick, Ashis1 (AUTHOR) mal123_us@yahoo.com, Kujur, Milli Suchita1 (AUTHOR), Tun, Khin Sandar2 (AUTHOR), Gupta, Manoj2 (AUTHOR)
Source: Materials & Manufacturing Processes. 2020, Vol. 35 Issue 14, p1650-1660. 11p.
Subjects: Nanocomposite materials, Alloy analysis, Microwave sintering, Lightweight materials, Construction materials, Ultimate strength, Magnesium alloys
Abstract: Graphene and its derivatives, due to their extraordinary mechanical, thermal, and tribological properties, are extensively used to fabricate bulk graphene-based nanocomposites. On the other hand, magnesium alloys are lightweight and manifest excellent mechanical properties. In the present study, the hardness and compressive responses of Mg–3 wt%Al/xRGO (x = 0.1 wt% and 0.3 wt.%) nanocomposites at ambient temperature were investigated. Further, the coefficient of thermal expansion of Mg–3 wt%Al/xRGO (x = 0.1 wt% and 0.3 wt.%) nanocomposites at elevated temperatures were estimated and compared with those of pure Mg and Mg–3 wt%Al alloy. Reduced graphene oxide (RGO) synthesized through the improved Hummer's Method followed by the thermal reduction method was used as the reinforcement material. The bulk samples of pure Mg, Mg–3%Al alloy, and nanocomposites were synthesized by blending of Mg, Al and RGO powder followed by cold compaction, microwave sintering and hot extrusion. Nanocomposite samples displayed significant changes in microstructures and substantial improvements in both Vickers hardness and ultimate compressive strength. The lower thermal expansion coefficients of Mg–3%Al/xRGO (x = 0.1 wt% and 0.3 wt.%) nanocomposites demonstrated better thermal and dimensional stability with respect to temperature. The obtained results would be conducive to design lightweight structural materials. [ABSTRACT FROM AUTHOR]
Copyright of Materials & Manufacturing Processes is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Synthesis and analysis of Mg–3%Al alloy nanocomposites reinforced by RGO.
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  Data: <searchLink fieldCode="AR" term="%22Kumar%2C+Pravir%22">Kumar, Pravir</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mallick%2C+Ashis%22">Mallick, Ashis</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> mal123_us@yahoo.com</i><br /><searchLink fieldCode="AR" term="%22Kujur%2C+Milli+Suchita%22">Kujur, Milli Suchita</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tun%2C+Khin+Sandar%22">Tun, Khin Sandar</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gupta%2C+Manoj%22">Gupta, Manoj</searchLink><relatesTo>2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Materials+%26+Manufacturing+Processes%22">Materials & Manufacturing Processes</searchLink>. 2020, Vol. 35 Issue 14, p1650-1660. 11p.
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  Data: <searchLink fieldCode="DE" term="%22Nanocomposite+materials%22">Nanocomposite materials</searchLink><br /><searchLink fieldCode="DE" term="%22Alloy+analysis%22">Alloy analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Microwave+sintering%22">Microwave sintering</searchLink><br /><searchLink fieldCode="DE" term="%22Lightweight+materials%22">Lightweight materials</searchLink><br /><searchLink fieldCode="DE" term="%22Construction+materials%22">Construction materials</searchLink><br /><searchLink fieldCode="DE" term="%22Ultimate+strength%22">Ultimate strength</searchLink><br /><searchLink fieldCode="DE" term="%22Magnesium+alloys%22">Magnesium alloys</searchLink>
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  Label: Abstract
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  Data: Graphene and its derivatives, due to their extraordinary mechanical, thermal, and tribological properties, are extensively used to fabricate bulk graphene-based nanocomposites. On the other hand, magnesium alloys are lightweight and manifest excellent mechanical properties. In the present study, the hardness and compressive responses of Mg–3 wt%Al/xRGO (x = 0.1 wt% and 0.3 wt.%) nanocomposites at ambient temperature were investigated. Further, the coefficient of thermal expansion of Mg–3 wt%Al/xRGO (x = 0.1 wt% and 0.3 wt.%) nanocomposites at elevated temperatures were estimated and compared with those of pure Mg and Mg–3 wt%Al alloy. Reduced graphene oxide (RGO) synthesized through the improved Hummer's Method followed by the thermal reduction method was used as the reinforcement material. The bulk samples of pure Mg, Mg–3%Al alloy, and nanocomposites were synthesized by blending of Mg, Al and RGO powder followed by cold compaction, microwave sintering and hot extrusion. Nanocomposite samples displayed significant changes in microstructures and substantial improvements in both Vickers hardness and ultimate compressive strength. The lower thermal expansion coefficients of Mg–3%Al/xRGO (x = 0.1 wt% and 0.3 wt.%) nanocomposites demonstrated better thermal and dimensional stability with respect to temperature. The obtained results would be conducive to design lightweight structural materials. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Materials & Manufacturing Processes is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1080/10426914.2020.1784927
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      – Code: eng
        Text: English
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        PageCount: 11
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      – SubjectFull: Microwave sintering
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      – SubjectFull: Lightweight materials
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      – SubjectFull: Construction materials
        Type: general
      – SubjectFull: Ultimate strength
        Type: general
      – SubjectFull: Magnesium alloys
        Type: general
    Titles:
      – TitleFull: Synthesis and analysis of Mg–3%Al alloy nanocomposites reinforced by RGO.
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            NameFull: Kumar, Pravir
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            NameFull: Mallick, Ashis
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            NameFull: Tun, Khin Sandar
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              Text: 2020
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