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<p>This study investigated the enhancement of mechanical properties in AA5086 aluminum alloy through the incorporation of silicon carbide (SiC) particles using a stir casting process, targeting marine applications. The composite’s tensile strength, microhardness, and ductility were evaluated by varying the SiC content from 0 to 6%. Results revealed a significant increase in tensile strength by 20.49%, reaching 196.23&#xa0;N/mm<sup>2</sup> at 6% SiC incorporation. Microhardness improved to 120.97&#xa0;VHN, although a minor reduction in ductility was observed (elongation at fracture reducing from 26.4 to 24.0%). These findings highlight the potential of aluminum alloy composites as lightweight, high-strength materials, presenting a viable alternative to stainless steel for underwater structures where overall weight is a critical consideration.</p>

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Strengthening 5th Series Aluminum Alloy with Silicon Carbide: A Stir Casting Approach

  • 期刊论文

  • 发表日期：

    2026年1月13日

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  • Spruha A. Dhavale,
  • Shivprakash B. Barve

摘要

This study investigated the enhancement of mechanical properties in AA5086 aluminum alloy through the incorporation of silicon carbide (SiC) particles using a stir casting process, targeting marine applications. The composite’s tensile strength, microhardness, and ductility were evaluated by varying the SiC content from 0 to 6%. Results revealed a significant increase in tensile strength by 20.49%, reaching 196.23 N/mm2 at 6% SiC incorporation. Microhardness improved to 120.97 VHN, although a minor reduction in ductility was observed (elongation at fracture reducing from 26.4 to 24.0%). These findings highlight the potential of aluminum alloy composites as lightweight, high-strength materials, presenting a viable alternative to stainless steel for underwater structures where overall weight is a critical consideration.