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Effects of temperature field and SiC nanoparticles on microstructure and mechanical properties of n-SiCp/Mg-9 %Al composites fabricated by ultrasonication-assisted semi-solid hot pressing of powder

  • Ming Li , Zhiwei Huang , Gaozhan Zhao , Hongxia Wang , Jianquan Tao and Yuanyuan Wan
Published/Copyright: February 25, 2019
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 110 Issue 3

Abstract

Mg-9 %Al magnesium matrix nanocomposites reinforced by 5 wt.% nanometre-sized SiC particles were synthesized via semi-solid powder hot pressing assisted by ultrasonication. The effect of the temperature field on the microstructure and tensile properties of the nanocomposites was systematically investigated. The distribution of the SiC nanoparticles, grain size, and morphology of the Mg17Al12 phase were found to be greatly affected by the hot-pressing temperature, resulting in strength and ductility first increasing and then decreasing with increasing hot-pressing temperatures. As the hot-pressing temperature increased to 510 °C, the nanocomposites consisted of hard SiC nanoparticles and isolated soft phases, and the SiC nanoparticles bonded well with the matrix without interfacial activity and exhibited the most uniform distribution in the nanocomposite. Moreover, compared to the Mg-9 %Al alloy, the nanocomposites exhibited significantly improved strength and excellent ductility both at room temperature and elevated temperature. The enhanced mechanical properties were attributed to the Orowan strengthening mechanism, the obvious grain boundary strengthening, and the load transfer effect.

Keywords: Magnesium matrix composite; Hot pressing; Temperature field; Microstructure; Mechanical properties
∗Correspondence address, Prof. Dr. Hongxia Wang, School of Materials Science and Engineering, Taiyuan University of Technology, Yingze West Street, Taiyuan 030024, P.R. China, Tel.: +860351 6010022, Fax: +86 0351 6010022, E-mail address:

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Received: 2018-01-19
Accepted: 2018-09-19
Published Online: 2019-02-25
Published in Print: 2019-03-13

© 2019, Carl Hanser Verlag, München

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. Static recrystallization characteristics and kinetics of high-silicon steels for direct quenching and partitioning
  5. Kinetics of intermetallic compound layers during initial period of reaction between mild steel and molten aluminum
  6. Effects of Cr and Zn on the interfacial microstructures of borides in Fe–Cr–B cast steels during hot-dipping in Al–Zn alloys
  7. Hot deformation behaviour of and processing map for an Ni-based austenitic stainless steel
  8. Design, microstructural characterization and heat treatment of novel Cu0.5FeNiVAlx high-entropy alloys
  9. Effects of temperature field and SiC nanoparticles on microstructure and mechanical properties of n-SiCp/Mg-9 %Al composites fabricated by ultrasonication-assisted semi-solid hot pressing of powder
  10. Investigation of the microstructure and mechanical properties of NbB2 particle reinforced aluminum matrix composites
  11. Effect of Al2O3/SiO2 ratio on viscosity and structure of CaO–Al2O3–SiO2–CaF2–MgO slag
  12. Microstructure and oxidation of Ni–Fe2O3 composite coating on AISI 304 stainless steel
  13. Synthesis and performance of Al3+-doped cathode materials 0.6Li[Li1/3Mn2/3]O2 · 0.4Li[Ni1/3Mn1/3Co(1/3-y)Aly]O2 by high temperature solid-state method
  14. Growth and photo-electrochemical properties of rutile TiO2 nanowire arrays prepared by the hydrothermal method
  15. Deposition of fine copper film on samples placed internally and externally to the cathodic cage
  16. DGM News
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https://doi.org/10.3139/146.111743
Keywords for this article
Magnesium matrix composite; Hot pressing; Temperature field; Microstructure; Mechanical properties

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. Static recrystallization characteristics and kinetics of high-silicon steels for direct quenching and partitioning
  5. Kinetics of intermetallic compound layers during initial period of reaction between mild steel and molten aluminum
  6. Effects of Cr and Zn on the interfacial microstructures of borides in Fe–Cr–B cast steels during hot-dipping in Al–Zn alloys
  7. Hot deformation behaviour of and processing map for an Ni-based austenitic stainless steel
  8. Design, microstructural characterization and heat treatment of novel Cu0.5FeNiVAlx high-entropy alloys
  9. Effects of temperature field and SiC nanoparticles on microstructure and mechanical properties of n-SiCp/Mg-9 %Al composites fabricated by ultrasonication-assisted semi-solid hot pressing of powder
  10. Investigation of the microstructure and mechanical properties of NbB2 particle reinforced aluminum matrix composites
  11. Effect of Al2O3/SiO2 ratio on viscosity and structure of CaO–Al2O3–SiO2–CaF2–MgO slag
  12. Microstructure and oxidation of Ni–Fe2O3 composite coating on AISI 304 stainless steel
  13. Synthesis and performance of Al3+-doped cathode materials 0.6Li[Li1/3Mn2/3]O2 · 0.4Li[Ni1/3Mn1/3Co(1/3-y)Aly]O2 by high temperature solid-state method
  14. Growth and photo-electrochemical properties of rutile TiO2 nanowire arrays prepared by the hydrothermal method
  15. Deposition of fine copper film on samples placed internally and externally to the cathodic cage
  16. DGM News
  17. DGM News
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