High temperature oxidation behaviour of AISI 321 stainless steel with an ultrafine-grained surface at 800 °C in Ar–20 vol.% O2

Pour-Ali S, Weiser M, Nguyen NT, Kiani-Rashid AR, Babakhani A, Virtanen S (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Article Number: 108282

DOI: 10.1016/j.corsci.2019.108282

Abstract

Oxidation behaviour of surface nanocrystallized 321 austenitic stainless steel (SN–321ASS) and its conventional polycrystalline counterpart (CP–321ASS) in Ar + 20% O2 at 800 °C is comparatively investigated. Severe breakaway oxidation sets in for the CP–321ASS after 100 h, while the SN–321ASS shows a higher oxidation resistance. Surface nanocrystallization increases the diffusion and flux of Cr towards the oxidation front, and can consequently promote the kinetics of early oxidation and accelerate the formation of a thicker Cr-rich inner oxide layer, which aids in prohibiting the enhanced formation of Fe-rich oxides.

Authors with CRIS profile

Martin Weiser Professur für Werkstoffwissenschaften (Korrosion und Oberflächentechnik) Nhat Truong Nguyen Lehrstuhl für Werkstoffwissenschaften (Korrosion und Oberflächentechnik) Sannakaisa Virtanen Professur für Werkstoffwissenschaften (Korrosion und Oberflächentechnik)

Involved external institutions

Ferdowsi University of Mashhad

Iran, Islamic Republic of (IR)

How to cite

APA:

Pour-Ali, S., Weiser, M., Nguyen, N.T., Kiani-Rashid, A.R., Babakhani, A., & Virtanen, S. (2019). High temperature oxidation behaviour of AISI 321 stainless steel with an ultrafine-grained surface at 800 °C in Ar–20 vol.% O2. Corrosion Science. https://doi.org/10.1016/j.corsci.2019.108282

MLA:

Pour-Ali, Sadegh, et al. "High temperature oxidation behaviour of AISI 321 stainless steel with an ultrafine-grained surface at 800 °C in Ar–20 vol.% O2." Corrosion Science (2019).