Title: Mechanical properties and corrosion behaviour of low carbon martensitic stainless steel after machining

Authors: Vincent Vignal; Stéphanie Bissey-Breton; Jean-Baptiste Coudert

Addresses: Laboratoire Interdisciplinaire Carnot de Bourgogne, ICB, UMR CNRS-Université de Bourgogne 6303, BP 47870, 21078 Dijon, Cedex, France; Laboratoire de Recherche Correspondant LIMPE (Interaction Matériau-Procédé-Environnement), LRC DAM-VA-11-02, France ' Commissariat à l'Energie Atomique, CEA, DAM, Valduc, 21120 Is-sur-Tille, France; Laboratoire de Recherche Correspondant LIMPE (Interaction Matériau-Procédé-Environnement), LRC DAM-VA-11-02, France ' Commissariat à l'Energie Atomique, CEA, DAM, Valduc, 21120 Is-sur-Tille, France; Laboratoire Interdisciplinaire Carnot de Bourgogne, ICB, UMR CNRS-Université de Bourgogne 6303, BP 47870, 21078 Dijon, Cedex, France; Laboratoire de Recherche Correspondant LIMPE (Interaction Matériau-Procédé-Environnement), LRC DAM-VA-11-02, France

Abstract: The influence of different combinations of cutting conditions on the mechanical behaviour (microhardness), the microstructure and the corrosion behaviour in NaCl solution (using the electrochemical microcell technique and pulse potentiodynamic testing) of a low carbon martensitic stainless steel (grade X4CrNiMo16.5.1 stainless steel) after tempering treatment was studied. Microhardness was increased on the machined surface. In addition, the electrochemical experiments have shown that the machined materials have a heterogeneous electrochemical behaviour. Significant effect of machining on pitting corrosion was noticed. The pitting potential was found to decrease as the microhardness increases.

Keywords: martensitic stainless steel; machining; mechanical properties; cutting conditions; microhardness; microstructure; corrosion behaviour; low carbon steel; tempering treatment; electrochemical behaviour; pitting corrosion.

DOI: 10.1504/IJMMM.2014.059186

International Journal of Machining and Machinability of Materials, 2014 Vol.15 No.1/2, pp.36 - 53

Received: 13 Feb 2013
Accepted: 28 Jun 2013
Published online: 13 May 2014 *

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