Influence of plastic deformation on electrochemical properties of X5CrNi18-10 steel

Wojciech Rejmer

doi:10.31648/ts.6051

Abstract

The purpose of the work was to determine the effect of plastic deformation on the electrochemical properties of X5CrNi18-10 steel. The tested material belongs to the group of stainless steels with low carbon content and is used in many industries due to high corrosion resistance. In most applications of the tested material, it is formed into complicated shapes and exposed to aggressive environments. An example can be applications in medicine (implants) as well as in civil engineering and nuclear energy The literature on the subject shows a different impact of deformation on anti-corrosion properties. Samples with 5 different deformations were obtained. Electrochemical direct electrical current and alternating electrical current tests were performed for the obtained materials. The tests were carried out in a 1 molar sodium chloride solution. Studies have shown an increase in corrosion resistance of samples with increasing strain in the tested strain ranges.

Highlights

Steel 1.4301 belongs to the group of corrosion-resistant steels (EN 10088-1:2014), and it has a wide range of applications
The deformation of samples made of X5CrNi18-10 steel increases the corrosion resistance of the material within the range of the tested deformations, provided that only DC tests are taken into account
Corrosion current density is reduced, which implies that fewer corrosion processes occur

Summary

Introduction

Steel 1.4301 belongs to the group of corrosion-resistant steels (EN 10088-1:2014), and it has a wide range of applications. Austenitic stainless steels are used in medicine They are often used in the production of orthopedic implants due to their properties, including the resistance to corrosion and fatigue, as well as high resistance to fracture. These properties are important in the selection and modification of materials for biomedical applications (Ryan et al 2006, Alvarez et al 2008). The above leads to void swelling, phase instability and creep that increases with the intensity of neutron radiation To meet these conditions, the chemical composition/microstructure of stainless steels must be changed, for example by introducing smaller amounts of alloying elements such as Ti, Si and P.

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