The demand for AZ61 Magnesium alloy in lightweight structural applications is driven by its exceptional strength-to-weight ratio and enhanced stiffness. In this study, AZ61 Mg alloy was produced through the stir casting technique. Three variations of the alloy were analyzed: as-cast, solutionized at 420 °C, and subsequently aged at 200 °C. The wear behavior of these variations was assessed using a Pin-on-disk tribometer, focusing on changes in tribological parameters such as load and sliding velocity while maintaining a constant sliding distance of 1000 m, with wear rates measured in mm3/min. The experimental investigation employed the Taguchi Approach to analyze wear behavior. Wear rates were compared across the AZ61 as-cast, T4-treated, and aged samples. Results indicated that wear rates increased with higher loads and sliding velocities. Microstructural examination via optical microscopy revealed significant findings: the solution heat-treated sample showed dissolution of the β phase, correlating with increased wear rates, while aging resulted in the diffusion of intermetallic phases, thereby enhancing wear resistance in the T6-treated sample.

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Influence of Tribological Parameters on As-cast, T4-Treated, and Aged AZ61 Magnesium Alloy

  • Manan Shah,
  • Dhaval Makwana,
  • Bhingole Pramod

摘要

The demand for AZ61 Magnesium alloy in lightweight structural applications is driven by its exceptional strength-to-weight ratio and enhanced stiffness. In this study, AZ61 Mg alloy was produced through the stir casting technique. Three variations of the alloy were analyzed: as-cast, solutionized at 420 °C, and subsequently aged at 200 °C. The wear behavior of these variations was assessed using a Pin-on-disk tribometer, focusing on changes in tribological parameters such as load and sliding velocity while maintaining a constant sliding distance of 1000 m, with wear rates measured in mm3/min. The experimental investigation employed the Taguchi Approach to analyze wear behavior. Wear rates were compared across the AZ61 as-cast, T4-treated, and aged samples. Results indicated that wear rates increased with higher loads and sliding velocities. Microstructural examination via optical microscopy revealed significant findings: the solution heat-treated sample showed dissolution of the β phase, correlating with increased wear rates, while aging resulted in the diffusion of intermetallic phases, thereby enhancing wear resistance in the T6-treated sample.