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Abstract
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The current work examines the effect of compaction loading rate on mechanical and tribological behavior of Mg-TiO2 functionally graded material produced by powdermetallurgy. Using a blender designed and manufactured in this work, magnesium (Mg) and titanium oxide ( TiO2) powders were mixed and graded using a linear function. The Mg/ TiO2 mixtures were then hot compacted at various loading rates utilizing a universal testing device Instron, drop hammer and Split Hopkinson bar. The tribological behavior of the samples was examined through SEM analysis and wear tests and the mechanical properties, such as hardness, compressive strength and indentation resistance were measured using compression, indentation, and hardness tests. The results suggest that the compaction loading rate has significant effect on tribological and mechanical behaviour of the specimens. In general, the increase in loading rate improves the mechanical properties such as hardness, indentation resistance and ultimate strength and tribological parameters such as wear rate and friction coefficient.
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