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The onset of tensile residual stresses in grinding of hardened steels

Balart, M.J.; Bouzina, A.; Edwards, L. and Fitzpatrick, M.E. (2004). The onset of tensile residual stresses in grinding of hardened steels. Materials Science and Engineering: A, 367(1-2) pp. 132–142.

DOI (Digital Object Identifier) Link: http://dx.doi.org/10.1016/j.msea.2003.10.239
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Abstract

Residual stress distributions produced by grinding with various conditions have been measured for four steels BS En9, BS En31, AISI M2 and CPM 10V (a trade name for AISI A11), using neutron and X-ray diffraction techniques. The residual stress profiles were found to have the maximum stress magnitude on the surface, which could be compressive or tensile depending on the grinding conditions used. By using experimentally-determined data for the maximum grinding surface temperature, it was found that tensile residual stresses are generated after the grinding temperature reaches a critical level, which was 200degreesC for both En9 and En31; 500degreesC for M2; and 600degreesC for CPM 10V For all these steels, tensile stresses can result under grinding conditions at which damage such as overtempering or rehardening does not occur. The softening behaviour during overtempering was characterized by means of the Hollomon-jaffe time-temperature parameter. It was concluded that among the three primary origins of residual grinding stresses-mechanical deformation (Hertzian load), thermally-induced plastic deformation, and phase transformations-it is the mechanical deformation and thermally-induced plastic deformation effects that cause the onset of tensile residual stresses when grinding these quenched and tempered steels.

Item Type: Journal Article
ISSN: 0921-5093
Academic Unit/Department: Mathematics, Computing and Technology
Mathematics, Computing and Technology > Engineering & Innovation
Item ID: 4747
Depositing User: Michael E. Fitzpatrick
Date Deposited: 11 Jul 2006
Last Modified: 19 Dec 2013 14:46
URI: http://oro.open.ac.uk/id/eprint/4747
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