Title: A critique on the micromachining of steel

Authors: Mark J. Jackson, Tamara Novakov

Addresses: Center for Advanced Manufacturing, MET, College of Technology, Purdue University, 401 North Grant Street, West Lafayette, IN 47907, USA. ' Center for Advanced Manufacturing, MET, College of Technology, Purdue University, 401 North Grant Street, West Lafayette, IN 47907, USA

Abstract: A critique on some recent computational results on the subject of micromachining of steel is presented in this paper. A scientific-based criticism is presented of selected results and analysis on the nature of chip formation at the microscale. The paper confirms that a mechanism known as |quasi-shear extrusion| takes place when machining materials of variable hardness and is confirmed using a dedicated finite element model for the analysis of machining at the microscale. The authors also provide an insight into how to further investigate the phenomenon of |quasi-shear extrusion chip formation| from an experimental viewpoint.

Keywords: micromachining; steel; plasticity; materials science; machining; finite element method; modelling; FEM; surface engineering; chip formation; quasi-shear extrusion.

DOI: 10.1504/IJCMSSE.2010.033157

International Journal of Computational Materials Science and Surface Engineering, 2010 Vol.3 No.2/3, pp.251 - 273

Published online: 10 May 2010 *

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