Microstructural evolution and its effect on corrosion behavior and mechanism of an austenite-based low-density steel during aging

Wu, Wei; Qin, Lizhi; Cheng, Xuequn; Xu, Feifan; Li, Yong

doi:10.1016/j.corsci.2022.110936

Cited by 35 publications

(4 citation statements)

References 62 publications

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“…It means that the higher ratio of AlO(OH) in products leads to greater compactness. AlO(OH) can usually provide good resistance to acidic corrosion and chloride corrosion (Wu et al , 2023). Therefore, the protection of the corrosion product film generally increases with the increase of the AlO(OH) ratio.…”

Section: Resultsmentioning

confidence: 99%

Atmospheric corrosion acceleration effect on commercial aluminum alloys in current-carrying condition

Gao,

Li,

et al. 2024

ACMM

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Purpose The purpose of this paper is to study the effect of current-carrying condition on the electrochemical process and atmospheric corrosion behavior of the commercial aluminum alloys. Design/methodology/approach Potentiodynamic polarization tests were performed to study the electrochemical process of the aluminum alloys. Salt spray tests and weight loss tests were carried out to study the atmospheric corrosion behavior. The corrosion morphology of the alloys was observed, and the products were analyzed. Findings The corrosion process of four aluminum alloys was accelerated in the current-carrying condition. Moreover, the acceleration effect on A2024 and A7075 was much stronger than that on A1050 and A5052. The main factors would be the differences in microstructure and corrosion resistance between these alloys. As the carried current increased, the corrosion rate and corrosion current density of the aluminum alloys gradually increased, with the protection of the corrosion product film decreasing linearly. Originality/value This is a recent study on the corrosion behavior of conductors under current-carrying condition, which truly understands the corrosion status of power grid materials. Relevant results provide support for the corrosion protection and safe service of aluminum alloy in power systems.

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Section: Resultsmentioning

confidence: 99%

Atmospheric corrosion acceleration effect on commercial aluminum alloys in current-carrying condition

Gao,

Li,

et al. 2024

ACMM

Self Cite

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“…Investigation into the microstructures of constituents used in engineering analyses are necessary for a scientist or engineers to determine their structural behavior, standards and specification [6,7]. This is one reason while theoretical design strength of engineering materials is needful to be able to achieve efficiency in real-life application.…”

Section: Importance Of Microstructural Constituentsmentioning

confidence: 99%

Effects of Varying Microstructural Constituents on Corrosion Resistance: A Review

Lawal¹,

Afolalu²,

Jen³

et al. 2023

RCMA

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Several detrimental phases usually result in materials due to improper variation and modification of the microstructural constituents. This usually cause serious defect and result in materials with poor mechanical properties as well as corrosion resistance. Majority of this problem could be traced to even the techniques of manufacturing. Thus, this study focused on a forensic review of the microstructural constituents and its how its variation affects the electrochemical performances of metals and alloys. The various types of microstructures were highlighted and their importance in several applications were explored. Furthermore, the study discussed the various methods of characterizing the microstructures of constituents and several of their mechanical properties that could have effects on the corrosion resistance were presented. Additionally, the effect of pores and composition of microstructural constituents were presented in detail. Also, it was established that it is necessary to modify microstructural constituents in a way that will improve the microstructural and corrosion behavior. The study provided potential information on the techniques of modification of the microstructural constituents that can influence the surface morphology and the mechanical properties of engineering material.

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“…Moreover, the ultrafast heating was used to regulate the chemical boundaries of low-carbon medium-Mn steel, which improved the ultimate tensile strength (UTS) and TE to 2.3 GPa and 17%, respectively [3]. Recently, a hierarchical microstructure was introduced in [4], which consists of laminated and twofold topologically aligned martensite with finely dispersed retained austenite (RA) that simultaneously activates multiple micro-mechanisms to strengthen and plasticize the medium Mn steel, resulting in the UTS of 2.2 GPa and TE of 18.0%.…”

Section: Introductionmentioning

confidence: 99%

Influence of Tempering Temperature on Microstructures and Tensile Properties of a Cr–N Alloyed Medium-Mn Martensitic Steel

Wen

et al. 2024

ISIJ Int.

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In this paper, the influence of tempering temperatures on microstructures and tensile properties of a Cr-N alloyed medium Mn martensitic steel was studied. The microstructures formed after the tempering below 400 ℃ are composed of recovered martensite as the matrix, ultrafine retained austenite (RA) and carbonitrides. The tempering at 100 ℃ led to the best combination of 2080 MPa ultrahigh ultimate tensile strength (UTS) and 15% total elongation (TE), which is attributed to the prominent strain hardening capacity caused by both the gradually release of internal stress and the pronounced austenite-to-martensite transformation. The tempering at 400 ℃ resulted in the rapid increase of yield strength (YS) by ~500 MPa due to the relief of internal tensile stress and annihilation of dislocations and the best ductility because it produced the most stable RA grains with the highest C concentration for a sustainable austenite-to-martensite transformation over the large plastic straining. The further increase of temperature to 650 ℃ caused ferrite formed, which decrease both YS and strain hardening rate, leading to the lowest UTS. Moreover, it was found that higher N content increased YS but had little influence on both UTS and TE because it mainly contributed to enhanced precipitation of carbonitrides. It is then concluded that the strength and ductility of medium Mn martensitic steel could be increased by increasing the strain hardening capacity through tailoring both the internal stress in martensite and the mechanical stability of RA via a proper tempering treatment.

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Microstructural evolution and its effect on corrosion behavior and mechanism of an austenite-based low-density steel during aging

Cited by 35 publications

References 62 publications

Atmospheric corrosion acceleration effect on commercial aluminum alloys in current-carrying condition

Atmospheric corrosion acceleration effect on commercial aluminum alloys in current-carrying condition

Effects of Varying Microstructural Constituents on Corrosion Resistance: A Review

Influence of Tempering Temperature on Microstructures and Tensile Properties of a Cr–N Alloyed Medium-Mn Martensitic Steel

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