Synergisic effect of Mn, Cu, P with Cr content on the corrosion behavior of weathering steel as a train under the simulated industrial atmosphere

Chang

et al. 2020

ACMM

Purpose The purpose of this paper is to study the mechanical and corrosion behaviors of selective laser melting (SLM) 30CrMnSiA steel. Design/methodology/approach The microstructure, mechanical behavior and corrosion resistance of SLM 30CrMnSiA steel were studied by electrochemical test and immersion experiment. Findings The results showed that the microstructure of SLM 30CrMnSiA steel contained equiaxed fine (25.0 µm) ferrite and lamellar pearlite. The tensile strength of SLM 30CrMnSiA steel under the process parameters is 1,447 MPa and the elongation is 7.5%. As the immersion/salt spray test time increased to 15 days/48 h, corrosion mainly occurred in the local position of the sample and corrosion resistance decreased. When the immersion/salt spray test time increased to 30 days/168 h, the corrosion production covered the surface of the samples and the corrosion resistance increased. Originality/value The paper can guide the application and in situ repair for low-alloy steel by additive manufacturing.

Section: Corrosion Propertiessupporting

confidence: 88%

The mechanical properties and corrosion resistance of selective laser melting 30CrMnSiA steel

Chang

et al. 2020

ACMM

“…When corrosion occurs in a neutral solution, the resistance of a coating increases with the increase in the P content, and corrosion will first occur in low P-content areas. 46 Therefore, the coating corrosion situation was improved. Fig.…”

Section: Resultsmentioning

confidence: 99%

Corrosion resistance of Ni–P/SiC and Ni–P composite coatings prepared by magnetic field-enhanced jet electrodeposition

Wang

Chen

et al. 2020

RSC Adv.

“…Research [29,30] has shown that low-alloy steel undergoes dissolution as the anode in electrochemical reactions, during which Cr dissolves to form Cr(OH) 3 , which then gradually dehydrates during the drying process to form Cr 2 O 3 . The related reactions are as follows:…”

Section: Discussionmentioning

confidence: 99%

The Influence of 1 wt.% Cr on the Corrosion Resistance of Low-Alloy Steel in Marine Environments

Gao

Wang

Cheng

et al. 2023

Metals

In this study, the effects of 1 wt.% Cr addition on the corrosion behavior and mechanisms of low-alloy structural steel in a marine environment were investigated through immersion experiments, corrosion product analysis, and electrochemical experimental systems. The results demonstrate that the addition of 1 wt.% Cr significantly enhances the corrosion resistance of low-alloy steel in marine environments. The influence of Cr addition on the corrosion product layer was analyzed through rust layer morphology, cross-sectional morphology, elemental distribution, and electrochemical systems. Cr addition effectively promotes the densification of the corrosion product layer on the surface of low-alloy steel in marine environments, hindering the penetration of corrosive ions and thus improving corrosion resistance. This study’s findings can promote the optimization of corrosion resistance in low-alloy steel in marine environments and enhance its application prospects in marine environments.