Expanded austenite; crystallography and residual stress

Thomas Christiansen (Invited author), Thomas Strabo Hummelshøj (Invited author), Marcel A. J. Somers (Invited author)

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


The identity of expanded austenite as developing during low temperature nitriding and/or carburizing of austenitic stainless steel has been under debate since the very first observation of this phase. In the present article recent results obtained with i) homogeneous samples of various uniform compositions and ii) unraveling of the contributions of stress-depth and composition-depth profiles in expanded austenite layers are summarized 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 languageEnglish
Title of host publicationSurface Modification Technologies XXII
Publication date2009
Publication statusPublished - 2009
Event22nd International Conference on Surface Modification Technologies - Trollhattan, Sweden
Duration: 22 Sep 200824 Sep 2008
Conference number: 22


Conference22nd International Conference on Surface Modification Technologies


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