Expanded austenite, crystallography and residual stress

Thomas Christiansen; Thomas Strabo Hummelshøj; Marcel A. J. Somers

doi:10.1179/026708410X12506870724316

Expanded austenite, crystallography and residual stress

Thomas Christiansen, Thomas Strabo Hummelshøj, Marcel A. J. Somers

Research output: Contribution to journal › Conference article › Research › peer-review

Abstract

The identity of expanded austenite as developing during low temperature nitriding and/or carburising of austenitic stainless steel has been under debate since the very first observation of this phase. In the present article, recent results obtained with (a) homogeneous samples of various uniform compositions and (b) unravelling of the contributions of stress-depth and composition-depth profiles in expanded austenite layers are summarised and discussed. It is shown through simulation of line profiles that the combined effects of composition gradients, stress gradients and stacking fault gradients can explain the observations in typical X-ray diffractograms.

Original language	English
Journal	Surface Engineering
Volume	26
Issue number	4
Pages (from-to)	242-247
ISSN	0267-0844
DOIs	https://doi.org/10.1179/026708410X12506870724316
Publication status	Published - 2010
Event	22nd International Conference on Surface Modification Technologies - Trollhattan, Sweden Duration: 22 Sept 2008 → 24 Sept 2008 Conference number: 22

Conference

Conference	22nd International Conference on Surface Modification Technologies
Number	22
Country/Territory	Sweden
City	Trollhattan
Period	22/09/2008 → 24/09/2008

Keywords

Stainless steel
Gaseous carburising
Residual stress
Gaseous nitriding
X-ray diffraction
Expanded austenite

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10.1179/026708410X12506870724316

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title = "Expanded austenite, crystallography and residual stress",

abstract = "The identity of expanded austenite as developing during low temperature nitriding and/or carburising of austenitic stainless steel has been under debate since the very first observation of this phase. In the present article, recent results obtained with (a) homogeneous samples of various uniform compositions and (b) unravelling of the contributions of stress-depth and composition-depth profiles in expanded austenite layers are summarised and discussed. It is shown through simulation of line profiles that the combined effects of composition gradients, stress gradients and stacking fault gradients can explain the observations in typical X-ray diffractograms.",

keywords = "Stainless steel, Gaseous carburising, Residual stress, Gaseous nitriding, X-ray diffraction, Expanded austenite",

author = "Thomas Christiansen and Hummelsh{\o}j, {Thomas Strabo} and Somers, {Marcel A. J.}",

year = "2010",

doi = "10.1179/026708410X12506870724316",

language = "English",

volume = "26",

pages = "242--247",

journal = "Surface Engineering",

issn = "0267-0844",

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T1 - Expanded austenite, crystallography and residual stress

AU - Christiansen, Thomas

AU - Hummelshøj, Thomas Strabo

AU - Somers, Marcel A. J.

N1 - Conference code: 22

PY - 2010

Y1 - 2010

N2 - The identity of expanded austenite as developing during low temperature nitriding and/or carburising of austenitic stainless steel has been under debate since the very first observation of this phase. In the present article, recent results obtained with (a) homogeneous samples of various uniform compositions and (b) unravelling of the contributions of stress-depth and composition-depth profiles in expanded austenite layers are summarised and discussed. It is shown through simulation of line profiles that the combined effects of composition gradients, stress gradients and stacking fault gradients can explain the observations in typical X-ray diffractograms.

AB - The identity of expanded austenite as developing during low temperature nitriding and/or carburising of austenitic stainless steel has been under debate since the very first observation of this phase. In the present article, recent results obtained with (a) homogeneous samples of various uniform compositions and (b) unravelling of the contributions of stress-depth and composition-depth profiles in expanded austenite layers are summarised and discussed. It is shown through simulation of line profiles that the combined effects of composition gradients, stress gradients and stacking fault gradients can explain the observations in typical X-ray diffractograms.

KW - Stainless steel

KW - Gaseous carburising

KW - Residual stress

KW - Gaseous nitriding

KW - X-ray diffraction

KW - Expanded austenite

U2 - 10.1179/026708410X12506870724316

DO - 10.1179/026708410X12506870724316

M3 - Conference article

SN - 0267-0844

VL - 26

SP - 242

EP - 247

JO - Surface Engineering

JF - Surface Engineering

IS - 4

T2 - 22nd International Conference on Surface Modification Technologies

Y2 - 22 September 2008 through 24 September 2008

ER -

Expanded austenite, crystallography and residual stress

Abstract

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Keywords

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