Material microstructure effects in micro-endmilling of Cu99.9E

Elkaseer, AM and Dimov, SS and Pham, DT and Popov, KP and Olejnik, L and Rosochowski, A (2016) Material microstructure effects in micro-endmilling of Cu99.9E. Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 232 (7). pp. 1143-1155. ISSN 2041-2975 (https://doi.org/10.1177/0954405416666898)

[thumbnail of Elkaseer-etal-PIME-B-JEM-2016-Material-microstructure-effects-in-micro-endmilling-of-Cu99-9E]
Preview
Text. Filename: Elkaseer_etal_PIME_B_JEM_2016_Material_microstructure_effects_in_micro_endmilling_of_Cu99_9E.pdf
Accepted Author Manuscript

Download (914kB)| Preview

Abstract

This article presents an investigation of the machining response of metallurgically and mechanically modified materials at the micro-scale. Tests were conducted that involved micro-milling slots in coarse-grained Cu99.9E with an average grain size of 30 µm and ultrafine-grained Cu99.9E with an average grain size of 200 nm, produced by equal channel angular pressing. A new method based on atomic force microscope measurements is proposed for assessing the effects of material homogeneity changes on the minimum chip thickness required for a robust micro-cutting process with a minimum surface roughness. The investigation has shown that by refining the material microstructure the minimum chip thickness can be reduced and a high surface finish can be obtained. Also, it was concluded that material homogeneity improvements lead to a reduction in surface roughness and surface defects in micro-cutting.

ORCID iDs

Elkaseer, AM, Dimov, SS, Pham, DT, Popov, KP, Olejnik, L and Rosochowski, A ORCID logoORCID: https://orcid.org/0000-0001-7896-8167;