Microstructure Characterization and Corrosion Resistance Behavior of New Cobalt-Free Maraging Steel Produced Through ESR Techniques

Seikh, Asiful H.; Halfa, Hossam; Baig, Muneer; Khan, Shahid Ali

doi:10.1007/s11665-017-2568-z

Cited by 15 publications

(5 citation statements)

References 20 publications

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“…Notably, each steel type exhibited the largest semicircle at a 360‐h corrosion cycle and the smallest at a 24‐h cycle. Consistent with prior research, [ 29–34 ] a larger semicircle diameter implies greater charge transfer resistance, suggesting improved protection from corrosion products and reduced metal dissolution. The Nyquist plots of the tested steels displayed a capacitive arc in the high‐frequency region, with the corrosion duration leading to an increase in surface corrosion product, thickening and densification of the rust layer, and a subsequent rise in capacitance arc diameter, enhancing protection.…”

Section: Resultssupporting

confidence: 87%

Effect of Cr on the corrosion behavior of low carbon vanadium micro alloyed weathering steel in a simulated industrial atmosphere

Liu,

Zheng,

Cui

et al. 2024

Materials & Corrosion

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The study investigates the practical application of cyclic wet/dry corrosion tests in simulated industrial atmospheres to assess the impact of chromium (Cr) on the protective properties of vanadium micro‐alloyed weathering steels. Two types of steels were examined: a V‐N steel and a V‐N‐Cr micro‐alloyed weathering steel. These steels were subjected to corrosion tests with 0.01 mol/L NaHSO3 at a pH range of 4.4–4.8 for varying durations. The findings indicate that the inclusion of Cr in the composition of vanadium micro‐alloyed weathering steel enhances corrosion resistance and leads to the accumulation of Cr in the inner rust layer. Furthermore, the distribution of corrosion‐resistant elements (Cr, Ni, Cu, P, and Mo) in V‐N and V‐N‐Cr steels is analyzed. The rust layer was observed to exhibit stratification in the corrosive environment, with the outer layers being dense and uniform, while the inner layers were porous and exhibited poor adhesion to the matrix. The study also delves into the anticorrosion mechanism of vanadium weathering steel using techniques such as X‐ray diffractometer, electron probe microanalysis, and potential‐phase diagram.

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Section: Resultssupporting

confidence: 87%

Effect of Cr on the corrosion behavior of low carbon vanadium micro alloyed weathering steel in a simulated industrial atmosphere

Liu,

Zheng,

Cui

et al. 2024

Materials & Corrosion

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“…R t describes the interfacial resistance between the steel and the corrosion product layer, which is the final barrier that prevents chlorine ions from reaching the metal surface [ 32 ]. A large capacitive arc diameter means that corrosion products have a strong protective ability, and the degree of metal dissolution reaction is weak [ 19 , 33 , 34 , 35 ]. Steel No.…”

Section: Resultsmentioning

confidence: 99%

Microstructure, Mechanical Properties, and Corrosion Behavior of Ultra-Low Carbon Bainite Steel with Different Niobium Content

Zong

Liu

2021

Materials

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Four types of ultra-low carbon bainite (ULCB) steels were obtained using unified production methods to investigate solely the effect of niobium content on the performance of ULCB steels. Tensile testing, low-temperature impact toughness testing, corrosion weight-loss method, polarization curves, electrochemical impedance spectroscopy (EIS), and the corresponding organizational observations were realized. The results indicate that the microstructure of the four steels comprise granular bainite and quite a few martensite/austenite (M/A) elements. The niobium content affects bainite morphology and the size, quantity, and distribution of M/A elements. The elongation, yield strength, and tensile strength of the four types of ULCB steels are above 20%, 500 MPa, and 650 MPa, respectively. The impact toughness of the four types of ULCB steels at −40 °C is lower than 10 J. Steel with Nb content of 0.0692% has better comprehensive property, and maximum charge transfer resistance in 3.5 wt.% NaCl solution at the initial corrosion stage. The corrosion products on the surface of steel with higher niobium content are much smoother and denser than those steel with lower niobium content after 240 h of corrosion. The degree of corrosion decreases gradually with the increase of niobium content at the later stage of corrosion.

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“…From Figure 11 b, it can be seen that the Nyquist impedance spectra of the corrosion product films formed in each corrosion stage show similar characteristics, which are capacitive arcs in the first quadrant. The size of the capacitive arc radius is generally considered to represent the charge transfer resistance of the corrosion process, and a larger radius indicates a higher charge transfer resistance [ 35 , 36 , 37 ]. The corrosion product film of the capacitive arc radius of resistance with the corrosion time extends the first decrease and then gradually increases, indicating that the reaction resistance of the corrosion process gradually increased and the corrosion rate decreased.…”

Section: Resultsmentioning

confidence: 99%

Corrosion Product Film of a Medium-Mn Steel Exposed to Simulated Marine Splash Zone Environment

Yan

Kang

et al. 2021

Materials

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The corrosion behavior of a medium-Mn steel in a simulated marine splash zone was studied by a dry–wet cyclic corrosion experiment and electrochemical experiment. The corrosion products were characterized by corrosion rate calculation, composition detection, morphology observation, element distribution detection, valence analysis, polarization curve, and electrochemical impedance test. The results show that the corrosion products of the sample mainly include γ-FeOOH, FexOy, MnxOy, and a small amount of (Fe,Mn)xOy, and the valence state of iron compounds and manganese compounds in different corrosion stages changed obviously. In the initial corrosion products, Mn is enriched significantly and facilitates the electrochemical reaction of corrosion process. The content of Ni in the inner rust layer is high. The semi-quantitative analysis of the corrosion product elements shows that the atomic concentrations of Cr and Mo increase significantly in later corrosion products, indicating that the dense isolation layer formed by alloy element compounds in the corroded layer is the main factor to improve the protection ability of the rust layer at the end corrosion stage of the sample. With the corrosion durations, the corrosion current density of the sample with the corrosion product film first increases and then decreases, and the corrosion potential first moves negative and then shifts in a positive direction subsequently, indicating that the protective effect of the corrosion product film is gradually significant.

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Microstructure Characterization and Corrosion Resistance Behavior of New Cobalt-Free Maraging Steel Produced Through ESR Techniques

Cited by 15 publications

References 20 publications

Effect of Cr on the corrosion behavior of low carbon vanadium micro alloyed weathering steel in a simulated industrial atmosphere

Effect of Cr on the corrosion behavior of low carbon vanadium micro alloyed weathering steel in a simulated industrial atmosphere

Microstructure, Mechanical Properties, and Corrosion Behavior of Ultra-Low Carbon Bainite Steel with Different Niobium Content

Corrosion Product Film of a Medium-Mn Steel Exposed to Simulated Marine Splash Zone Environment

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