Duplex and superduplex stainless steels: microstructure and property evolution by surface modification processes

AB Tahchieva, N Llorca-Isern, JM Cabrera - Metals, 2019 - mdpi.com
The paper presents an overview of diffusion surface treatments, especially nitriding
processes, applied to duplex and superduplex stainless steels in the last five years …

On the S-phase formation and the balanced plasma nitriding of austenitic-ferritic super duplex stainless steel

WR de Oliveira, BCES Kurelo, DG Ditzel… - Applied Surface …, 2018 - Elsevier
The different physical responses of austenite (γ) and ferrite (α) iron structures upon nitriding
result in technical challenges to the uniform modification of α-γ materials, as the super …

A numerical model coupling diffusion and grain growth in nanocrystalline materials

J Zhao, GX Wang, C Ye, Y Dong - Computational Materials Science, 2017 - Elsevier
The optimization of material properties by tailoring nanoscale microstructure is garnering
great attention from both material scientists and manufacturing engineers. One promising …

Study on the fatigue properties of plasma nitriding S45C with a pre-ultrasonic nanocrystal surface modification process

B Wu, P Wang, YS Pyoun, J Zhang… - Surface and Coatings …, 2013 - Elsevier
Graded microstructures with different grain sizes and depths were produced on the surface
layer of S45C steel by ultrasonic nanocrystal surface modification (UNSM). Plasma nitriding …

Cellular automata modeling of nitriding in nanocrystalline metals

J Zhao, GX Wang, C Ye, Y Dong - Computational Materials Science, 2016 - Elsevier
Severe plastic deformation has made it possible to alter the grain size of metal surface to
nanoscale. With refined nanograins, the grain boundary effect on diffusion and phase …

Modeling nitriding enhancement resulting from the NanoPeening treatment of a pure iron

V Lacaille, G Kermouche, DYT Spinel… - IOP Conference …, 2014 - iopscience.iop.org
Nanocrystalline materials are well known to have enhanced diffusion properties, especially
due to their high grain boundary density which are fast diffusion channels in the material. In …

Estudio del comportamiento del acero inoxidable dúplex y superdúplex después de deformación plástica severa

A Biserova Tahchieva - 2021 - diposit.ub.edu
[spa] Los diferentes grados de aceros inoxidables dúplex (DSS) se caracterizan por sus
atractivas propiedades de resistencia mecánica y resistencia a la corrosión, debido a su …

Stress-diffusion coupling. From interstitial problems to the gas nitriding of steel.

L Germain - 2022 - pastel.hal.science
For many years, the understanding of the coupling between a mechanical (applied or
residual) stress field and a chemical field in a material diffusion process has been an …

[PDF][PDF] Study on fatigue properties of S45C steel after hybrid surface treatments of ultrasonic nanocrystal surface modification and plasma nitriding

B Wu - The University of Tokushima, Ph. D Thesis, 2014 - repo.lib.tokushima-u.ac.jp
Surface treatment is an important method to improve fatigue strength and has been used
widely in production. The severe surface plastic deformation (S 2 PD) as a new surface …

Modélisation de l'oxydation à haute température des alliages Ni-Cr

L Bataillou - 2019 - theses.hal.science
Il est important pour l'industrie nucléaire de mener des études amont pour mieux
appréhender les phénomènes en lien avec la corrosion des alliages chromino-formeurs …