Effect of grain size and crystallographic orientation on the corrosion behaviors of low alloy steel

Wang, Panjun; Ma, Li; Cheng, Xuequn; Li, Yong

doi:10.1016/j.jallcom.2020.158258

Cited by 65 publications

(21 citation statements)

References 41 publications

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“…The results confirmed that these regions are more active compared to the adjacent matrix, which makes them more susceptible to corrosion attack during the exposure to electrolytes. Therefore, the grain refinement enhances the reactivity of the surface, which could promote a preferential dissolution of the grains [ 7 , 8 , 11 , 12 , 14 , 15 , 16 , 18 ].…”

Section: Resultsmentioning

confidence: 99%

“…From the magnetic properties point of view, large grains are more benefical. Grain size has also a strong effect on the mechanical and corrosion properties of the steel [ 7 , 8 , 9 , 10 , 11 ]. The relationship between the grain size and mechanical properties of the steel is well defined by the Hall-Petch relationship.…”

Section: Introductionmentioning

confidence: 99%

“…Palumbo et al [ 13 ] observed that an increase in grain refinement leads to an increase in the volume fraction of intercrystalline areas such as grain boundaries and triple junctions. Many authors argued that the grain boundaries and triple junctions have higher energies compared to the bulk and, as such, are more chemically active with respect to the adjacent matrix [ 7 , 8 , 11 , 12 , 14 , 15 , 16 , 17 ]. Therefore, the grain refinement enhances the reactivity of the surface, which may cause a preferential dissolution of the grains [ 7 , 8 , 11 , 12 , 14 , 15 , 16 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

“…Many authors argued that the grain boundaries and triple junctions have higher energies compared to the bulk and, as such, are more chemically active with respect to the adjacent matrix [ 7 , 8 , 11 , 12 , 14 , 15 , 16 , 17 ]. Therefore, the grain refinement enhances the reactivity of the surface, which may cause a preferential dissolution of the grains [ 7 , 8 , 11 , 12 , 14 , 15 , 16 , 18 ]. However, it is worth mentioning that there is not an unanimous consensus regarding the effect of the grain size on the corrosion resistance of ferrous alloys.…”

Section: Introductionmentioning

confidence: 99%

“…Some studies showed that the environment plays a crucial role. Wang et al [ 7 ] reported that the grain refinement decreased the corrosion resistance of the low alloy steel in a 3.5 wt.% NaCl solution, but the same steel showed an improvement in corrosion resistance in a 0.1 M NaHCO 3 solution. Similar behavior was observed by Zeiger et al [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Effect of Grain Size on the Corrosion Behavior of Fe-3wt.%Si-1wt.%Al Electrical Steels in Pure Water Saturated with CO2

et al. 2021

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The corrosion behavior of two silicon steels with the same chemical composition but different grains sizes (i.e., average grain area of 115.6 and 4265.9 µm2) was investigated by metallographic microscope, gravimetric, electrochemical and surface analysis techniques. The gravimetric and electrochemical results showed that the corrosion rate increased with decreasing the grain size. The scanning electron microscopy/energy dispersive X-ray spectroscopy and X-ray photoelectron spectroscopyanalyses revealed formation of a more homogeneous and compact corrosion product layer on the coarse-grained steel compared to fine-grained material. The Volta potential analysis, carried out on both steels, revealed formation of micro-galvanic sites at the grain boundaries and triple junctions. The results indicated that the decrease in corrosion resistance in the fine-grained steel could be attributed to the higher density of grain boundaries (e.g., a higher number of active sites and defects) brought by the refinement. The higher density of active sites at grain boundaries promote the metal dissolution of the and decreased the stability of the corrosion product layerformed on the metal surface.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Effect of Grain Size on the Corrosion Behavior of Fe-3wt.%Si-1wt.%Al Electrical Steels in Pure Water Saturated with CO2

et al. 2021

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Contribution of galvanic coupling with TiN, TiAlN, and CrN to the corrosion of steel in neutral and acidic chloride solutions

Avcı

Kazmanlı

Evren

et al. 2023

Materials & Corrosion

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The inherent defective morphology of the physical vapor deposition (PVD) hard coatings limits their corrosion protective ability. We examined the impact of nitride‐based PVD coatings, including TiN, TiAlN, and CrN deposited on inert substrates by cathodic arc PVD method (CA‐PVD), on the galvanic corrosion of carbon steel. Their contribution was evaluated by zero‐resistance ammeter (ZRA) and electrochemical impedance spectroscopy (EIS) in 3.5 wt.% NaCl at pH 2 and 6, with and without aeration. The results indicated the prominent role of the coating type and the coupling environment on the generated galvanic currents. Immersion tests for the TiN‐, TiAlN‐, and CrN‐coated steel cross‐sections visually verified these results. The galvanic current contribution was distinct in environments where oxygen reduction is the dominant cathodic reaction. However, the layers' contribution to galvanic corrosion was minimal in deaerated acidic solutions, which is attributed to the high bonding strength of adsorbed intermediates to the coating surfaces.

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Texture evolution in a CrMnFeCoNi high-entropy alloy manufactured by laser powder bed fusion

Wang

Zhu

et al. 2022

J Mater Sci

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Additive manufacturing (AM) techniques including laser powder bed fusion have been widely used to produce metallic components with microstructures and mechanical properties distinctly different from the conventionally manufactured counterparts. Understanding how AM parameters affect the evolution of microstructure, including texture, of these AM metallic components is critical for appropriate manipulation of their processing and therefore their mechanical properties. Here we conducted a systematic investigation of texture evolution of a face-centred cubic CrMnFeCoNi high-entropy alloy cuboid fabricated using laser powder bed fusion. Our results showed that the texture evolutions along the build direction were different between the corner and central parts of the sample. Detailed analysis suggested that the texture evolution is closely related to local thermal gradient, which is a property that can be manipulated through changing AM parameters. The different textures lead to the significant variations of mechanical properties within the sample.

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Effect of grain size and crystallographic orientation on the corrosion behaviors of low alloy steel

Cited by 65 publications

References 41 publications

Effect of Grain Size on the Corrosion Behavior of Fe-3wt.%Si-1wt.%Al Electrical Steels in Pure Water Saturated with CO2

Effect of Grain Size on the Corrosion Behavior of Fe-3wt.%Si-1wt.%Al Electrical Steels in Pure Water Saturated with CO2

Contribution of galvanic coupling with TiN, TiAlN, and CrN to the corrosion of steel in neutral and acidic chloride solutions

Texture evolution in a CrMnFeCoNi high-entropy alloy manufactured by laser powder bed fusion

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