Behavior of Some Stainless Nitrided Austenite Steel Types to Corrosion and Abrasion
Journal Title: Analele Universitatii "Dunarea de Jos" din Galati. Fascicula IX, Metalurgie si Stiinta Materialelor - Year 2006, Vol 29, Issue 2
Abstract
By nitriding, stainless austenite steel types can become surface hardened. Hardness can be greater at more than 1000 HV005 when the composition layer made of complex nitrides is obtained and more reduced till 500 HV005 when a diffusion layer made of highly alloyed austenite including nitrogen is obtained. The tests in salt fog for resistance to corrosion show a decrease of this resistance to corrosion from Perfectly resistant materials (appreciation mark 1.1) to Very resistant materials (appreciation mark 2.1 or 2.2), for the nitrided steel types which form complex nitrides layers and which can keep the resistance to corrosion in the group of perfectly resistant materials or an insignificant decrease for the steel type that forms a diffusion layer. The tests for resistance to abrasion show a decrease of two or three times for mass losses this meaning a significant increase in resistance. This is as important as surface treatment and thickness of nitrided layer are bigger. The steel, the surface treatment, so the type of diffusion surface layer with austenite structure or the combinations with nitrides complex separations will be chosen depending on aggressive factors weight for corrosion and abrasion of the environment in which the product is working.
Authors and Affiliations
Ovidiu Dima, Olga MITOŞERIU
Keywords
Related Articles
- EP ID EP663572
- DOI -
- Views 78
- Downloads 0
Influence on Reduction Scheme Hardness Cold Rolled Strip Mark Steel ST 12
The paper presents the results of the research on the influence of the evolution hardness scheme rolled steel, for the cold-rolled strip steel St 12. St 12 is intended for the manufacture of cold rolled strip stamping pr...
Effect of Fluidized- Bed Carburizing on Mechanical Properties and Abrasive Wear Behavior of Sintered Steels
In this paper is studied the influence of fluidized bed carburizing of sintered steels, for three different types of powder. Carburization is one of the most popular variety of temochemical treatment. Usually, carburizat...
X-Ray Diffraction Residual Stress Measurements for Quality Control Testing
This paper present the primary difficulties which are associated with the obtaining and interpreting surface X-ray diffraction residual stress results: the surface stresses may be identical for the shoot peening, nitridi...
Aspects Regarding the Constitutive Equations for FEM Analysis of Advanced Metal Forming Processes
The main aim of this paper is to review some different models, from simple to very complicated, for computing the changes in flow stress depending on the deformation conditions. Some of the models can be applied to cold...
Continuous Flux Thermal Treatments for Improving the Resistance at Alternate Bending of Medium to High Strength Steel Strips
The research was focused on obtaining medium to high strength steel strips for strapping heavy products by applying continuous flux thermal treatments on common grades, cheap carbon steels. For steel strapping the behavi...