Strengthened forced convection – A novel method for improving the pitting corrosion resistance of friction-surfaced stainless steel coating

D. Guo; C. T. Kwok; S. L.I. Chan

doi:10.1016/j.matdes.2019.108037

Strengthened forced convection – A novel method for improving the pitting corrosion resistance of friction-surfaced stainless steel coating

D. Guo, C. T. Kwok, S. L.I. Chan

Department of Chemical and Materials Engineering

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

During friction surfacing (FS), argon is commonly used as shielding gas for avoiding oxidation, and the resistance of FSed 316L coatings to pitting corrosion is normally improved by the fragmentation of MnS inclusions. In the present study, it is demonstrated that the resistance of the FSed coating to pitting corrosion could be further improved using strengthened forced convection (SFC) with argon shielding. Restoration and further growth of dynamically recrystallized grains under SFC relieve the elastic strain in {111} grains, decrease the dislocation density, and hence reduce the metastable pit initiation probability effectively and suppress the stable pit transition susceptibility slightly.

Original language	English
Article number	108037
Journal	Materials and Design
Volume	182
DOIs	https://doi.org/10.1016/j.matdes.2019.108037
State	Published - 15 Nov 2019

Keywords

Austenitic stainless steel
Dynamic recrystallization
Friction surfacing
Pitting corrosion
Shielding gas

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title = "Strengthened forced convection – A novel method for improving the pitting corrosion resistance of friction-surfaced stainless steel coating",

abstract = "During friction surfacing (FS), argon is commonly used as shielding gas for avoiding oxidation, and the resistance of FSed 316L coatings to pitting corrosion is normally improved by the fragmentation of MnS inclusions. In the present study, it is demonstrated that the resistance of the FSed coating to pitting corrosion could be further improved using strengthened forced convection (SFC) with argon shielding. Restoration and further growth of dynamically recrystallized grains under SFC relieve the elastic strain in {111} grains, decrease the dislocation density, and hence reduce the metastable pit initiation probability effectively and suppress the stable pit transition susceptibility slightly.",

keywords = "Austenitic stainless steel, Dynamic recrystallization, Friction surfacing, Pitting corrosion, Shielding gas",

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T1 - Strengthened forced convection – A novel method for improving the pitting corrosion resistance of friction-surfaced stainless steel coating

AU - Guo, D.

AU - Kwok, C. T.

AU - Chan, S. L.I.

PY - 2019/11/15

Y1 - 2019/11/15

N2 - During friction surfacing (FS), argon is commonly used as shielding gas for avoiding oxidation, and the resistance of FSed 316L coatings to pitting corrosion is normally improved by the fragmentation of MnS inclusions. In the present study, it is demonstrated that the resistance of the FSed coating to pitting corrosion could be further improved using strengthened forced convection (SFC) with argon shielding. Restoration and further growth of dynamically recrystallized grains under SFC relieve the elastic strain in {111} grains, decrease the dislocation density, and hence reduce the metastable pit initiation probability effectively and suppress the stable pit transition susceptibility slightly.

AB - During friction surfacing (FS), argon is commonly used as shielding gas for avoiding oxidation, and the resistance of FSed 316L coatings to pitting corrosion is normally improved by the fragmentation of MnS inclusions. In the present study, it is demonstrated that the resistance of the FSed coating to pitting corrosion could be further improved using strengthened forced convection (SFC) with argon shielding. Restoration and further growth of dynamically recrystallized grains under SFC relieve the elastic strain in {111} grains, decrease the dislocation density, and hence reduce the metastable pit initiation probability effectively and suppress the stable pit transition susceptibility slightly.

KW - Austenitic stainless steel

KW - Dynamic recrystallization

KW - Friction surfacing

KW - Pitting corrosion

KW - Shielding gas

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DO - 10.1016/j.matdes.2019.108037

M3 - 期刊論文

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SN - 0264-1275

VL - 182

JO - Materials and Design

JF - Materials and Design

M1 - 108037

ER -

Strengthened forced convection – A novel method for improving the pitting corrosion resistance of friction-surfaced stainless steel coating

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Keywords

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