On the synthesis and sintering behavior of a novel Mg-Ca alloy, Part II: Spark plasma sintering

  • Parisa Golmohammadi 1
  • Ahmad Bahmani 2
  • Nader Parvin 1
  • Behzad Nayebi 3
  • 1 Department of Materials and Metallurgical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
  • 2 Department of Advanced Materials and Renewable Energy, Iranian Research Organization for Science and Technology, Tehran, Iran
  • 3 Arta Magnesium Parsian Engineering Co., Tehran, Iran

Abstract

With the growing interest in lightweight materials, magnesium and its alloys have received substantial attention for replacing existing alloys. After investigating the mechanical alloying process of Mg-Ca alloys and determining the optimum parameters for milling in part I of this study, the current research aims to examine the second step: the sintering process. This study proposes the powder metallurgy method to process Mg-Ca alloy through the spark plasma sintering technique at 420 °C under an applied pressure of 38 MPa. Samples with different additives (starch or paraffin) were sintered for various dwell times (7 and 10 min) to determine the optimal mechanical and physical properties. To study the microstructure and phase composition of the sintered alloys, X-ray diffractometer (XRD), field scanning electron microscopy (FESEM), and X-ray energy dispersive spectroscopy (EDS) were utilized.  Density measurement, compression test, and micro-hardness evaluation were also conducted for the physical and mechanical feathers analysis. The results indicated that samples with a dwell time of 10 min exhibited superior mechanical properties. Additionally, the starch-containing sample outperformed the paraffin-containing sample in both physical and mechanical properties.

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Keywords: Spark plasma sintering, Magnesium, Powder metallurgy, Grain boundary, Strengthening, Solid solution strengthening

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On the synthesis and sintering behavior of a novel Mg-Ca alloy, Part II: Spark plasma sintering
Submitted
2023-12-20
Available online
2024-06-26
How to Cite
Golmohammadi, P., Bahmani, A., Parvin, N., & Nayebi, B. (2024). On the synthesis and sintering behavior of a novel Mg-Ca alloy, Part II: Spark plasma sintering. Synthesis and Sintering, 4(2), 154-159. https://doi.org/10.53063/synsint.2024.42194

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