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Material Mechanical Properties Influence on the Ratio of Drilling Thrust to Hardness

Published online by Cambridge University Press:  11 February 2011

G. Mauvoisin ,
O. Bartier ,
R. El Abdi  and
A. Nayebi
G. Mauvoisin
Affiliation:
University of Rennes Applied Mechanic Research Laboratory, I.U.T. de Rennes, 3, Rue du Clos Courtel – B.P. 90422 -35704 Rennes cedex 7, France
O. Bartier
Affiliation:
University of Rennes Applied Mechanic Research Laboratory, I.U.T. de Rennes, 3, Rue du Clos Courtel – B.P. 90422 -35704 Rennes cedex 7, France
R. El Abdi
Affiliation:
University of Rennes Applied Mechanic Research Laboratory, I.U.T. de Rennes, 3, Rue du Clos Courtel – B.P. 90422 -35704 Rennes cedex 7, France
A. Nayebi
Affiliation:
University of Rennes Applied Mechanic Research Laboratory, I.U.T. de Rennes, 3, Rue du Clos Courtel – B.P. 90422 -35704 Rennes cedex 7, France
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Abstract

A new approach using an experimental hole drilling technique has been developed to determine the hardness profile of superficially heat-treated steels. This method was based on the proportionality between the hardness of the material tested and the cutting thrust measured during the drilling test. Although it was observed that, overall, the increase in the cutting thrust was linear with hardness, locally the variation of thrust was not necessarily regular and linear in particular for iron-carbon alloys. In fact, other parameters related to the material, other than hardness, can modify the cutting thrust level. We report here on the influence of parameters, such as the type of microstructure and the ductility or the work hardening of material, on drilling thrust. The cutting thrust obtained for various brittle or ductile materials will be discussed using results obtained from hardness tests, micrographic observations and microhardness of the chips obtained by drilling test.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 750: Symposium Y – Surface Engineering 2002–Synthesis, Characterization and Applications , 2002 , Y8.11
Copyright
Copyright © Materials Research Society 2003

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References

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