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<p>Magnesium-based composites can benefit from a high strength-to-weight ratio. However, agglomeration caused by poor wettability and porosity due to air entrapment and oxidation influences the composite’s behaviour. The addition of 1 % potassium fluoride (KF) wetting agent during the magnesium alloy (AZ91D) composite preparation via stir cast associated with argon (Ar) inert nature under 1 × 10<sup>5</sup> Pa vacuum pressure favours limiting agglomeration, increasing wettability, and minimizing casting defects. The influence of processing and hybrid reinforcements (boron nitride/titanium dioxide) on the functional behaviour of AZ91D composites is studied and related to that of the mono AZ91D alloy. Transmission electron microscopy research revealed that the reinforcements are evenly distributed and have no similar porosity. The AZ91D/3 wt% BN/3 wt% TiC hybrid nanocomposite exhibits superior hardness (112 HV), improved yield and tensile strength (232 MPa and 298 MPa), good impact toughness properties (7.4 J/mm<sup>2</sup>), and enhanced Young’s modulus (61 GPa) performance.</p>

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Vacuum die cast featured with fluoride based wettability on behaviour of AZ9D/BN/TiC hybrid nanocomposites

  • 期刊论文

  • 发表日期：

    2025年11月5日

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  • M. Aruna,
  • A. Mohana Krishnan,
  • N. Naga Bhooshanam,
  • R. Venkatesh,
  • N. Kavitha,
  • Vinayagam Mohanavel,
  • Manzoore Elahi M. Soudagar,
  • Ahmed Fouly,
  • A. H. Seikh

摘要

Magnesium-based composites can benefit from a high strength-to-weight ratio. However, agglomeration caused by poor wettability and porosity due to air entrapment and oxidation influences the composite’s behaviour. The addition of 1 % potassium fluoride (KF) wetting agent during the magnesium alloy (AZ91D) composite preparation via stir cast associated with argon (Ar) inert nature under 1 × 105 Pa vacuum pressure favours limiting agglomeration, increasing wettability, and minimizing casting defects. The influence of processing and hybrid reinforcements (boron nitride/titanium dioxide) on the functional behaviour of AZ91D composites is studied and related to that of the mono AZ91D alloy. Transmission electron microscopy research revealed that the reinforcements are evenly distributed and have no similar porosity. The AZ91D/3 wt% BN/3 wt% TiC hybrid nanocomposite exhibits superior hardness (112 HV), improved yield and tensile strength (232 MPa and 298 MPa), good impact toughness properties (7.4 J/mm2), and enhanced Young’s modulus (61 GPa) performance.