Scholarlink

<p>Aluminium matrix composites (AMCs) reinforced with ceramic particulates are increasingly explored for aerospace and structural applications due to their superior mechanical and thermal characteristics. In this work, Al7075 reinforced with silicon carbide (SiC) particles was fabricated using the stir-casting technique and analyzed experimentally and numerically. The composite density showed variation with reinforcement, increasing slightly from 2.81 g/cc (0 vol%) to 3.014 g/cc (8 vol%), confirming the lightweight nature of the alloy system. Mechanical testing revealed a peak improvement at moderate reinforcement levels: the tensile strength rose from 419 MPa at 2&#xa0;wt% SiCp to 425 MPa at 4&#xa0;wt%. However, due to particle agglomeration and ductility reductions, the tensile strength drops to 390 MPa at an 8&#xa0;wt%, resulting in lower performance when SiCp is added to the matrix further. The microhardness values were shown an incremental percentage of 48% (6&#xa0;vol%). According to thermal study, the addition of reinforcement improved high-temperature resistance by gradually lowering the specific heat capacity and thermal conductivity. When compared to experimental results, advanced modeling using DIGIMAT-MF mean field homogenization in conjunction with ANSYS simulations produced highly accurate predictions for mechanical and thermal responses, with variations of less than 10% for mechanical parameters and 5–10% for thermal values. Al7075/SiC composites with the ideal reinforcement (4–6 vol%) can improve tensile strength by up to 7.1% and stiffness by up to 11%, according to the combined experimental numerical approach, proving their suitability for lightweight aerospace structures where thermal stability and strength-to-weight ratio are crucial.</p> Graphical abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Investigation of reinforcement behaviour on mechanical and thermal properties in Al-SiCp matrix using DIGIMAT-MF and finite element method

  • 期刊论文

  • 发表日期：

    2025年11月15日

查看全文
  • Naveen Kumar Votarikari,
  • Siva Surya Mulugundam,
  • Soppari Bhanu Murthy

摘要

Aluminium matrix composites (AMCs) reinforced with ceramic particulates are increasingly explored for aerospace and structural applications due to their superior mechanical and thermal characteristics. In this work, Al7075 reinforced with silicon carbide (SiC) particles was fabricated using the stir-casting technique and analyzed experimentally and numerically. The composite density showed variation with reinforcement, increasing slightly from 2.81 g/cc (0 vol%) to 3.014 g/cc (8 vol%), confirming the lightweight nature of the alloy system. Mechanical testing revealed a peak improvement at moderate reinforcement levels: the tensile strength rose from 419 MPa at 2 wt% SiCp to 425 MPa at 4 wt%. However, due to particle agglomeration and ductility reductions, the tensile strength drops to 390 MPa at an 8 wt%, resulting in lower performance when SiCp is added to the matrix further. The microhardness values were shown an incremental percentage of 48% (6 vol%). According to thermal study, the addition of reinforcement improved high-temperature resistance by gradually lowering the specific heat capacity and thermal conductivity. When compared to experimental results, advanced modeling using DIGIMAT-MF mean field homogenization in conjunction with ANSYS simulations produced highly accurate predictions for mechanical and thermal responses, with variations of less than 10% for mechanical parameters and 5–10% for thermal values. Al7075/SiC composites with the ideal reinforcement (4–6 vol%) can improve tensile strength by up to 7.1% and stiffness by up to 11%, according to the combined experimental numerical approach, proving their suitability for lightweight aerospace structures where thermal stability and strength-to-weight ratio are crucial.

Graphical abstract