Aluminum (Al) foam produced via powder metallurgy (PM) route is prone to several issues that can affect its microstructure and mechanical properties resulting in poor compression. Nonuniform pore size distribution may occur because of inconsistent mixing or uneven distribution of the foaming agent within the aluminum powder matrix which may lead to weak regions in the foam, reducing its mechanical performance, such as compression strength. This paper focus on utilizing silicon carbide (SiC) particles with 5%, 10%, and 15% and urea as space holder to prepare Al/SiC composite foams. The effect of different reinforcement content on the pore structure and distribution of aluminum foam composite was focused and axial quasi-static compression tests were conducted. The results indicate that variations in reinforcement significantly influenced the porosity and pore distribution of Al foam. Al/SiC 10% composite foam demonstrated outstanding compressive strength of 48.78 MPa which is three times more than traditional unreinforced aluminum foam.

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Microstructural and Compressive Behavior of Al/SiC Composite Foams

  • Venkata Ramana Menda,
  • Siva Prasad Dora,
  • Shoba Chintada,
  • Divakar Bommana

摘要

Aluminum (Al) foam produced via powder metallurgy (PM) route is prone to several issues that can affect its microstructure and mechanical properties resulting in poor compression. Nonuniform pore size distribution may occur because of inconsistent mixing or uneven distribution of the foaming agent within the aluminum powder matrix which may lead to weak regions in the foam, reducing its mechanical performance, such as compression strength. This paper focus on utilizing silicon carbide (SiC) particles with 5%, 10%, and 15% and urea as space holder to prepare Al/SiC composite foams. The effect of different reinforcement content on the pore structure and distribution of aluminum foam composite was focused and axial quasi-static compression tests were conducted. The results indicate that variations in reinforcement significantly influenced the porosity and pore distribution of Al foam. Al/SiC 10% composite foam demonstrated outstanding compressive strength of 48.78 MPa which is three times more than traditional unreinforced aluminum foam.