Mechanical behavior of magnesium-steel particles composites with interpenetrating phases

Document Type : Research Article


Department of Materials Engineering, Faculty of Engineering, University of Sistan and Baluchestan, Zahedan, Iran


In this study, steel particles were used to reinforce the magnesium matrix. To fabricate the magnesium-steel particle composite,  steel particle preforms were made in different sizes; some were sintered at 1000 - 1200 ℃ and some without sintering. These preforms were preheated at 750 °C and then infiltrated with melted magnesium with the squeeze casting method. The microstructure of the preforms and the composites were investigated by SEM and optical microscope. Microhardness and compression tests were performed to investigate the mechanical behavior of the composites. The microstructure study showed the rigid connectivity between the steel particles in the interpenetrating phase composites. Also, hardness and compression test results showed higher hardness (61 VHN) and strength (218 MPa) for the composites with 1mm steel particle size sintered at 1200 ℃. Hence, the composites with 3D-dimensionally interconnected steel particles show significant changes in their mechanical properties.

Graphical Abstract

Mechanical behavior of magnesium-steel particles composites with interpenetrating phases


  • High volume fraction of particulate interpenetrated phase magnesium-steel shot composites fabricated with sintered steel shots using the preform and squeeze casting method.
  • The mechanical properties (compressive strength and hardness) of the composites were affected by steel shots reinforcement connectivity.
  • Interface deboning and interparticle breaking are dominant damages in the composite’s fractures.


Copyright © 2023 The Author(s). Published by IROST.

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