ISSN: 1945-7553
CODEN: JTEVAB
Published Online: 6 December 2004
Page Count: 5

Effects of Carburizing Treatment on First-Order Correlation between Steel Vickers Hardness and Thermal Diffusivity

Boubaker, K
Laboratoire Photovaltaique et Matériaux Semiconducteurs (Ecole Nationale d‘Ingénieurs de TUNIS)/E.S.S.T., Mahdia, Tunisia

(Received 23 March 2004; accepted 9 June 2004)

Abstract

We have developed a theoretical and experimental model for imaging heat-treated steel hardness profiles. An analytical solution to the heat equation is presented as a guide to measurements, which are focused on prospecting both mechanical parameters and thermal local properties, indexed on the carbon-iron ratio along treatment depth. We tried to prove that the existence of a simple correlation between treated steel mechanical and thermal characteristics rises only beyond a critical carburizing depth. Comparison between several results allowed us to evaluate this critical depth and establish a simple correlation between treated steel HV microhardness and thermal diffusivity, in a particular case of surface hardening treatment.

Keywords:
Vickers hardness, thermal diffusivity, carburizing, heat equation, correlation, critical depth

Paper ID: JTE11685
DOI: 10.1520/JTE11685
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