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<p>This study investigates the fabrication and characterization of an aluminum–magnesium composite reinforced with zirconium diboride (ZrB<sub>2</sub>) particles using enhanced solid-state techniques. Friction stir processing was used, utilizing a vertical milling machine to meticulously craft the composite with precision. Specific parameters such as 10&#xa0;mm pin diameter, 0° tool tilt angle, and threaded tool profile were carefully selected for optimal results. The tool traversed at 30&#xa0;mm/min, rotating at 1300 revolutions per minute, defining the operation with a pin length of 3&#xa0;mm and a shoulder diameter of 20&#xa0;mm. The composite substrate comprised A356 and AZ91 alloys, affixed securely, with stringent cleanliness protocols observed throughout the process. The resultant composite, containing 2.5% ZrB<sub>2</sub>, showed remarkable features, including a crack-free and porosity-free surface, indicative of exceptional microstructural integrity. Tensile strength improved by 24.26% and hardness by 60.33%, following the addition of ZrB<sub>2</sub> particles, indicating enhanced mechanical properties. Moreover, a significant improvement of 54.09% was observed in wear resistance with ZrB<sub>2</sub> inclusion. X-ray diffraction analysis confirmed the presence of Al, Mg, and ZrB<sub>2</sub> phases, verifying the successful incorporation of ZrB<sub>2</sub> particles into the composite matrix.</p>

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Enhanced solid-state techniques: fabrication and characterization of aluminum–magnesium composites reinforced with ZrB2 particles

  • 期刊论文

  • 发表日期：

    2025年3月5日

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  • Shashi Prakash Dwivedi,
  • Praveen Pachauri,
  • Shubham Sharma,
  • Vijay Chaudhary

摘要

This study investigates the fabrication and characterization of an aluminum–magnesium composite reinforced with zirconium diboride (ZrB2) particles using enhanced solid-state techniques. Friction stir processing was used, utilizing a vertical milling machine to meticulously craft the composite with precision. Specific parameters such as 10 mm pin diameter, 0° tool tilt angle, and threaded tool profile were carefully selected for optimal results. The tool traversed at 30 mm/min, rotating at 1300 revolutions per minute, defining the operation with a pin length of 3 mm and a shoulder diameter of 20 mm. The composite substrate comprised A356 and AZ91 alloys, affixed securely, with stringent cleanliness protocols observed throughout the process. The resultant composite, containing 2.5% ZrB2, showed remarkable features, including a crack-free and porosity-free surface, indicative of exceptional microstructural integrity. Tensile strength improved by 24.26% and hardness by 60.33%, following the addition of ZrB2 particles, indicating enhanced mechanical properties. Moreover, a significant improvement of 54.09% was observed in wear resistance with ZrB2 inclusion. X-ray diffraction analysis confirmed the presence of Al, Mg, and ZrB2 phases, verifying the successful incorporation of ZrB2 particles into the composite matrix.