Improved corrosion resistance of 316LN stainless steel performed by rotationally accelerated shot peening

Rotationally accelerated shot peening (RASP) technology was used to produce nanocrystallines and twins on the surface of 316LN stainless steel. Electrochemical corrosion experiments were carried out on the RASP-processed 316LN SS specimens in the 3.5 wt% NaCl solution. Improved passivity and better...

Full description

Saved in:
Bibliographic Details
Published in:Applied surface science 2019-07, Vol.481, p.1305-1312
Main Authors: Chen, Xudong, Li, Yusheng, Zhu, Yuntian, Bai, Yakui, Yang, Bin
Format: Article
Language:English
Subjects:
Corrosion resistance
Nanocrystalline
Passive film
Stainless steel
Twin
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Rotationally accelerated shot peening (RASP) technology was used to produce nanocrystallines and twins on the surface of 316LN stainless steel. Electrochemical corrosion experiments were carried out on the RASP-processed 316LN SS specimens in the 3.5 wt% NaCl solution. Improved passivity and better electronic properties of passive films were observed on the RASP-processed specimens. The experimental results showed that the structure with nanocrystallines and a high density of twins produced by the RASP process can provide more nucleation sites, adhesion work and homogeneous capillary force to improve the uniformity and compactness of the passive film, resulting in a better corrosion resistance. •Rotationally accelerated shot peening (RASP) was used to prepare the nanostructured layer on 316LN stainless steel (SS).•Improved passivity and better electronic properties of passive film were observed on the RASP-processed 316LN SS.•Nanocrystallines and a high density of twin boundaries (TBs) were produced by the RASP process.•The nanocrystallines and TBs provide more nucleation sites, adhesion work and capillary force to enhance the passive film.
ISSN:0169-4332
1873-5584
DOI:10.1016/j.apsusc.2019.03.256