Surface integrity in high-speed grinding of Al6061T6 alloy

Abstract

High-ductility materials often impose grinding problems. This study carries out high-speed grinding on the Al6061T6 alloy at a linear grinding speed of 30.4–307.0 m/s to explore surface integrity and material removal mechanisms from the perspectives of material embrittlement and damage skin effect. The results reveal that the micrograins are refined into the equiaxed nanograins in the Al6061T6 workpieces subjected to grinding. Continuous dynamic recrystallization is induced at a decreasing depth with an increasing grinding speed due to the high strain-rate field and the reduced depth of the heat affected layer, manifesting a result of damage skin effect.

Topics & Concepts