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<p>Material degradation due to slurry erosive wear affects components exposed to particle-entrained slurries. This study investigates the slurry erosion behavior of AZ31 Magnesium alloy processed through friction stir processing. The base and processed materials were subjected to slurry jet erosion test under various impingement angles. Alumina abrasive particles of 700&#xa0;µm nominal size were used as the erodent. Experimental results indicated that the base and processed materials exhibit ductile erosion behavior, with maximum mass loss occurring at an oblique angle of 30°. With increase in impact angle, mass loss is found to be decreased. Compared to the unprocessed alloy, material processed through friction stir processing at 1500&#xa0;rpm tool rotation speed and 60&#xa0;mm/min traverse speed showed minor mass loss at all impingement angles. Surface profile analysis revealed a ‘U’-shaped scar profile, regardless of the impingement angle. Furthermore, surface roughness decreased with increasing impact angle. Scanning electron microscopy confirmed that micro-cutting and ploughing mechanisms dominated at shallow angles, while indentation and plastic deformation were more prevalent at higher impingement angles. </p>

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Role of Microstructural Modification in the Slurry Erosion Behavior of Friction Stir Processed AZ31 Magnesium Alloy

  • 期刊论文

  • 发表日期：

    2025年6月30日

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  • S. Annamalai,
  • Md Saad Patel,
  • B. Anand Ronald,
  • Ariful Rahaman,
  • R. Jose Immanuel

摘要

Material degradation due to slurry erosive wear affects components exposed to particle-entrained slurries. This study investigates the slurry erosion behavior of AZ31 Magnesium alloy processed through friction stir processing. The base and processed materials were subjected to slurry jet erosion test under various impingement angles. Alumina abrasive particles of 700 µm nominal size were used as the erodent. Experimental results indicated that the base and processed materials exhibit ductile erosion behavior, with maximum mass loss occurring at an oblique angle of 30°. With increase in impact angle, mass loss is found to be decreased. Compared to the unprocessed alloy, material processed through friction stir processing at 1500 rpm tool rotation speed and 60 mm/min traverse speed showed minor mass loss at all impingement angles. Surface profile analysis revealed a ‘U’-shaped scar profile, regardless of the impingement angle. Furthermore, surface roughness decreased with increasing impact angle. Scanning electron microscopy confirmed that micro-cutting and ploughing mechanisms dominated at shallow angles, while indentation and plastic deformation were more prevalent at higher impingement angles.