On Material Removal Mechanism in High Speed Single Grit Scratch-Grinding of Cryo-Treated Al2024-T351 Aluminium Alloy

Abstract:

Feasibility of utilizing cryogenic technology to improve the shearability of Al2024-T351 alloy is experimentally investigated by carrying out a single grit scratch-grinding test. A single grit brazed diamond grinding tool is developed for the study. Al2024-T351 work specimens are treated with liquid nitrogen for 6 hours before the scratch test. Although there was no significant change in the tensile strength of the material, the surface experiences change in the microhardness. It helps in arresting the side flow and ploughing of the material during high speed scratch grinding. The scratched grooves on cryo-treated samples, compare to those of untreated specimens, shows signs of cleaner shear-cuts, superior finish and produces less grinding force during grinding

• Periodical: Materials Science Forum (Volume 1009)
• Pages: 123-128
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1009.123
• Online since: August 2020
• Authors: Sweety Satpathy*, Amitava Ghosh
• Keywords: 3D Surface Profiling, Al2024-T351 Aluminium Alloy, Cryogenic Treatment, Single Grit Scratch-Grinding Test

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