New insights into the effects of surface nanocrystallization on the oxidation of 321 austenitic stainless steel in a humid oxygen environment at 1000 degrees C

Journal article


Publication Details

Author(s): Pour-Ali S, Kiani-Rashid AR, Babakhani A, Norouzi M, Virtanen S
Journal: Corrosion Science
Publication year: 2019
Volume: 147
Pages range: 231-245
ISSN: 0010-938X


Abstract

Oxidation behaviour of surface nanocrystallized 321 austenitic stainless steel (SN-321ASS) and its conventional polycrystalline counterpart (CP-321ASS) in O-2 + 10% H2O at 1000 degrees C was comparatively investigated. Uniform dense distribution of high diffusivity paths on the SN-321ASS greatly enhances the Cr and Mn diffusion throughout the oxidation front. Consequently: (i) formation of a thicker Cr-rich inner oxide layer on the SN-321ASS leads to a superior oxidation resistance, (ii) formation of Mn-rich spinel oxide as a uniform intermediate layer interrupts the easy access of oxygen and/or water to the Cr-rich inner oxide layer, thereby reducing the Cr-vaporization.


FAU Authors / FAU Editors

Virtanen, Sannakaisa Prof. Dr.
Professur für Werkstoffwissenschaften (Korrosion und Oberflächentechnik)


External institutions with authors

Ferdowsi University of Mashhad
Huazhong University of Science & Technology


How to cite

APA:
Pour-Ali, S., Kiani-Rashid, A.-R., Babakhani, A., Norouzi, M., & Virtanen, S. (2019). New insights into the effects of surface nanocrystallization on the oxidation of 321 austenitic stainless steel in a humid oxygen environment at 1000 degrees C. Corrosion Science, 147, 231-245. https://dx.doi.org/10.1016/j.corsci.2018.11.024

MLA:
Pour-Ali, Sadegh, et al. "New insights into the effects of surface nanocrystallization on the oxidation of 321 austenitic stainless steel in a humid oxygen environment at 1000 degrees C." Corrosion Science 147 (2019): 231-245.

BibTeX: 

Last updated on 2019-27-02 at 13:08