Title : ( New insights into the effects of surface nanocrystallization on the oxidation of 321 austenitic stainless steel in a humid oxygen environment at 1000 °C )
Authors: Sadegh PourAli , Ali Reza Kiani Rashid , Abolfazl Babakhani , Mohsen Norouzi , Sannakaisa Virtanen ,
Full TextAbstract
Oxidation behaviour of surface nanocrystallized 321 austenitic stainless steel -SN–321ASS- and its conventional polycrystalline counterpart -CP–321ASS- in O2 + 10% H2O at 1000 °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.
Keywords
, Stainless steel, TEM, XPS, Oxidation
@article{paperid:1072737,
author = {PourAli, Sadegh and Kiani Rashid, Ali Reza and Babakhani, Abolfazl and Mohsen Norouzi and Sannakaisa Virtanen},
title = {New insights into the effects of surface nanocrystallization on the oxidation of 321 austenitic stainless steel in a humid oxygen environment at 1000 °C},
journal = {Corrosion Science},
year = {2019},
volume = {147},
number = {1},
month = {February},
issn = {0010-938X},
pages = {231--245},
numpages = {14},
keywords = {Stainless steel; TEM; XPS; Oxidation},
}
%0 Journal Article
%T New insights into the effects of surface nanocrystallization on the oxidation of 321 austenitic stainless steel in a humid oxygen environment at 1000 °C
%A PourAli, Sadegh
%A Kiani Rashid, Ali Reza
%A Babakhani, Abolfazl
%A Mohsen Norouzi
%A Sannakaisa Virtanen
%J Corrosion Science
%@ 0010-938X
%D 2019
