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

  • Parisa Golmohammadi
  • Ahmad Bahmani
  • Nader Parvin
  • Behzad Nayebi

Abstract

With the growing interest in lightweight materials, magnesium and its alloys have received substantial attention for replacing existing alloys. After studying the mechanical alloying process of Mg-Ca alloys by studying the optimum parameters for the milling process in part I of the study, this study aims to investigate the second step, i.e. the sintering process. This study proposes the powder metallurgy method to process Mg-Ca alloy through the spark plasma sintering technique at 420 °C with an applied pressure of 38 MPa. Samples with different dwelling times (7 and 10 minutes) and additive types (starch or paraffin) were sintered in order to investigate the best mechanical and physical properties. For the study of the above objective, the structure and phase of the sintered alloys were utilized by X-ray Diffractometer (XRD), field scanning electron microscopy (FESEM), and X-ray energy dispersive spectroscopy (EDS). Density measurement, compression test, and microhardness were also tested to conduct the mechanical analysis. Results indicated that the samples with a dwelling time of 10 minutes exhibit superior mechanical properties. In addition, the starch-based sample outperformed the sample with paraffin as an additive in both physical and mechanical properties.

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Keywords: Spark Plasma Sintering, Magnesium, Mechanical Alloying, Powder Metallurgy, Grain Boundary, Strengthening, Solid Solution Strengthening
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). https://doi.org/10.53063/synsint.2024.42194

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