Tribological Performance Evaluation of Ball Burnished Magnesium Alloy for Bioresorbable Implant Applications

Autor: G. V. Jagadeesh, Srinivasu Gangi Setti
Rok vydání: 2021
Předmět:
Zdroj: Journal of Materials Engineering and Performance. 31:1170-1186
ISSN: 1544-1024
1059-9495
Popis: The application range of magnesium alloys is restricted because of poor tribological performance. The present study focuses on improving the tribological characteristics of magnesium Ze41A alloy by ball burnishing process. The lowest wear rate of 2.997 × (10)−3 mm3/m, CoF of 0.116 and interface temperature of 38 °C are obtained by ball burnishing process. The SEM examination at optimum burnishing condition reveals the oxidative wear mechanism, while the milled surface exhibited plastic deformation mechanism under similar wear conditions. The significant enhancement in tribological performance of magnesium Ze41A alloy is apparently due to the improvement in surface roughness and microhardness during ball burnishing process. The wear rate has been decreased by 51.22%, CoF by 72.58 and interfacial temperature by 39.68% at the optimum burnishing condition as compared to initial milling condition under similar wear conditions. Additionally, the tribological performance is evaluated by fuzzy interface system and the model found to estimate the results with an average absolute error of 4.92%.
Databáze: OpenAIRE
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