Low-temperature gaseous surface hardening of stainless steel: the current status

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The present review addresses the state of the art of low-temperature gaseous surface engineering of (austenitic) stainless steel and is largely based on the authors' own work in the last 10 years. The main purpose of low temperature gaseous surface engineering of stainless steel is to develop a hardened case at the surface, while maintaining the superior corrosion performance. This can be achieved by dissolving colossal amounts of nitrogen and/or carbon without forming nitrides and/or carbides, thus developing so-called expanded austenite. The present work gives an overview over results obtained on homogeneous expanded austenite and covers the crystallography for nitrogen- and carbon-stabilised expanded austenite, the solubility for nitrogen and carbon, the diffusion of these interstitials as well as the stability of expanded austenite with respect to nitride and carbide formation. Subsequently, the fundamental understanding acquired on homogeneous samples is applied to understand the morphology, composition, and residual stress distribution in functionally graded material, as obtained by nitriding, carburising or nitrocarburising of austenitic stainless steel. Thereafter, aspects of modelling the compositional changes occurring during nitriding are addressed. The overview summarises with an outlook towards future scientific challenges.
Original languageEnglish
JournalInternational Journal of Materials Research
Volume100
Issue number10
Pages (from-to)1361-1377
ISSN1862-5282
DOIs
Publication statusPublished - 2009

Keywords

  • Residual stress
  • Expanded austenite
  • Surface engineering
  • Modelling

Cite this

@article{b3b697791bb54769a8ebca823aab1493,
title = "Low-temperature gaseous surface hardening of stainless steel: the current status",
abstract = "The present review addresses the state of the art of low-temperature gaseous surface engineering of (austenitic) stainless steel and is largely based on the authors' own work in the last 10 years. The main purpose of low temperature gaseous surface engineering of stainless steel is to develop a hardened case at the surface, while maintaining the superior corrosion performance. This can be achieved by dissolving colossal amounts of nitrogen and/or carbon without forming nitrides and/or carbides, thus developing so-called expanded austenite. The present work gives an overview over results obtained on homogeneous expanded austenite and covers the crystallography for nitrogen- and carbon-stabilised expanded austenite, the solubility for nitrogen and carbon, the diffusion of these interstitials as well as the stability of expanded austenite with respect to nitride and carbide formation. Subsequently, the fundamental understanding acquired on homogeneous samples is applied to understand the morphology, composition, and residual stress distribution in functionally graded material, as obtained by nitriding, carburising or nitrocarburising of austenitic stainless steel. Thereafter, aspects of modelling the compositional changes occurring during nitriding are addressed. The overview summarises with an outlook towards future scientific challenges.",
keywords = "Residual stress, Expanded austenite, Surface engineering, Modelling",
author = "Thomas Christiansen and Somers, {Marcel A. J.}",
year = "2009",
doi = "10.3139/146.110202",
language = "English",
volume = "100",
pages = "1361--1377",
journal = "International Journal of Materials Research",
issn = "1862-5282",
publisher = "Carl Hanser Verlag GmbH & Co. KG",
number = "10",

}

Low-temperature gaseous surface hardening of stainless steel: the current status. / Christiansen, Thomas; Somers, Marcel A. J.

In: International Journal of Materials Research, Vol. 100, No. 10, 2009, p. 1361-1377.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Low-temperature gaseous surface hardening of stainless steel: the current status

AU - Christiansen, Thomas

AU - Somers, Marcel A. J.

PY - 2009

Y1 - 2009

N2 - The present review addresses the state of the art of low-temperature gaseous surface engineering of (austenitic) stainless steel and is largely based on the authors' own work in the last 10 years. The main purpose of low temperature gaseous surface engineering of stainless steel is to develop a hardened case at the surface, while maintaining the superior corrosion performance. This can be achieved by dissolving colossal amounts of nitrogen and/or carbon without forming nitrides and/or carbides, thus developing so-called expanded austenite. The present work gives an overview over results obtained on homogeneous expanded austenite and covers the crystallography for nitrogen- and carbon-stabilised expanded austenite, the solubility for nitrogen and carbon, the diffusion of these interstitials as well as the stability of expanded austenite with respect to nitride and carbide formation. Subsequently, the fundamental understanding acquired on homogeneous samples is applied to understand the morphology, composition, and residual stress distribution in functionally graded material, as obtained by nitriding, carburising or nitrocarburising of austenitic stainless steel. Thereafter, aspects of modelling the compositional changes occurring during nitriding are addressed. The overview summarises with an outlook towards future scientific challenges.

AB - The present review addresses the state of the art of low-temperature gaseous surface engineering of (austenitic) stainless steel and is largely based on the authors' own work in the last 10 years. The main purpose of low temperature gaseous surface engineering of stainless steel is to develop a hardened case at the surface, while maintaining the superior corrosion performance. This can be achieved by dissolving colossal amounts of nitrogen and/or carbon without forming nitrides and/or carbides, thus developing so-called expanded austenite. The present work gives an overview over results obtained on homogeneous expanded austenite and covers the crystallography for nitrogen- and carbon-stabilised expanded austenite, the solubility for nitrogen and carbon, the diffusion of these interstitials as well as the stability of expanded austenite with respect to nitride and carbide formation. Subsequently, the fundamental understanding acquired on homogeneous samples is applied to understand the morphology, composition, and residual stress distribution in functionally graded material, as obtained by nitriding, carburising or nitrocarburising of austenitic stainless steel. Thereafter, aspects of modelling the compositional changes occurring during nitriding are addressed. The overview summarises with an outlook towards future scientific challenges.

KW - Residual stress

KW - Expanded austenite

KW - Surface engineering

KW - Modelling

U2 - 10.3139/146.110202

DO - 10.3139/146.110202

M3 - Journal article

VL - 100

SP - 1361

EP - 1377

JO - International Journal of Materials Research

JF - International Journal of Materials Research

SN - 1862-5282

IS - 10

ER -