Effects of cooling rate on the precipitation behavior of grain boundary carbide and corrosion resistance of 5Cr15MoV stainless steel

Yan, Han; Lü, Nan; Wei, Chongyi; Xu, Taixu; Liu, Jihui

doi:10.1002/maco.202011505

Cited by 5 publications

(3 citation statements)

References 8 publications

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“…For instance, in conventional SS, the different local chemistry can cause GBs to act as preferential nucleation sites for undesired secondary phases, such as sulfides or carbides, that can destabilize the passive oxide. [100][101][102] In addition, the local free volume of GBs can provide a fast mass transport pathway for the corrosive electrolyte. 92,96,101,103,104 Beyond GBs, grain triple junctions can also affect pit formation.…”

Section: Grain Structurementioning

confidence: 99%

Pitting Corrosion in 316L Stainless Steel Fabricated by Laser Powder Bed Fusion Additive Manufacturing: A Review and Perspective

Voisin

Shi

Zhu

et al. 2022

JOM

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Abstract316L stainless steel (316L SS) is a flagship material for structural applications in corrosive environments, having been extensively studied for decades for its favorable balance between mechanical and corrosion properties. More recently, 316L SS has also proven to have excellent printability when parts are produced with additive manufacturing techniques, notably laser powder bed fusion (LPBF). Because of the harsh thermo-mechanical cycles experienced during rapid solidification and cooling, LPBF processing tends to generate unique microstructures. Strong heterogeneities can be found inside grains, including trapped elements, nano-inclusions, and a high density of dislocations that form the so-called cellular structure. Interestingly, LPBF 316L SS not only exhibits better mechanical properties than its conventionally processed counterpart, but it also usually offers much higher resistance to pitting in chloride solutions. Unfortunately, the complexity of the LPBF microstructures, in addition to process-induced defects, such as porosity and surface roughness, have slowed progress toward linking specific microstructural features to corrosion susceptibility and complicated the development of calibrated simulations of pitting phenomena. The first part of this article is dedicated to an in-depth review of the microstructures found in LPBF 316L SS and their potential effects on the corrosion properties, with an emphasis on pitting resistance. The second part offers a perspective of some relevant modeling techniques available to simulate the corrosion of LPBF 316L SS, including current challenges that should be overcome.

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Section: Grain Structurementioning

confidence: 99%

Pitting Corrosion in 316L Stainless Steel Fabricated by Laser Powder Bed Fusion Additive Manufacturing: A Review and Perspective

Voisin

Shi

Zhu

et al. 2022

JOM

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“…Martensitic stainless steels (MSSs) have been widely used in the manufacture of turbine blades, surgical instruments, molds, cutting tools, etc., due to their high strength, hardness, good wear resistance, and corrosion resistance [1][2][3]. Among them, 5Cr15MoV martensitic stainless steel contains about 15% Cr and 0.5% C, which achieves an optimal balance of hardness and good corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

Effect of Tempering Time on the Microstructure and Properties of Martensitic Stainless Steel

Jiang,

Wu,

Zhang

et al. 2024

Metals

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Martensitic stainless steels (MSSs) have been widely used in the manufacture of turbine blades, surgical instruments, and cutting tools because of their hardness and corrosion resistance. The MSSs are usually tempered at a temperature no higher than 250 °C after quenching to avoid the decline in the hardness, strength, and corrosion resistance of the steels. However, some short-time thermal shocks are inevitable in processes like welding, water grinding, laser marking, etc., in the manufacturing of kitchen knives, all of which may have negative effects on the mechanical properties and corrosion resistance. The effects of these short-time thermal shocks have rarely been studied. In this paper, the martensitic stainless steel 5Cr15MoV (X50CrMoV15 is European Standards) was selected to be tempered at the sensitization temperatures (480 to 600 °C) for a series of times (0.5 to 128 min) after quenching, and the microstructures, hardness, and corrosion resistance of the steel after tempering were investigated. It was shown that the variation in hardness and corrosion resistance of the 5Cr15MoV steel could be divided into four stages over time during tempering at the sensitization temperatures. The hardness of steel was found to increase at first and then decrease with time; accordingly, good corrosion resistance was retained in the initial few minutes of tempering, which then deteriorated fast. The variation in hardness and corrosion resistance of the 5Cr15MoV steel is related to the diffusion of C and Cr atoms at different tempering temperatures. The mechanism of the mechanical properties and corrosion resistance variation caused by the diffusion of C and Cr atoms during tempering at the sensitization temperatures was also discussed.

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“…[ 2,3 ] In recent years, this material has been used in the manufacture of high‐grade cutting tools like kitchen knives, surgical knives and scissors, and so forth. [ 3,4 ]…”

Section: Introductionmentioning

confidence: 99%

Effect of tempering temperature on the microstructure, corrosion resistance, and antibacterial properties of Cu‐bearing martensitic stainless steel

Hao

et al. 2021

Materials & Corrosion

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In this study, the effects of tempering temperature on the microstructure, hardness, antibacterial performance and corrosion resistance of Cu‐bearing 5Cr15MoV martensitic stainless steel (5Cr15MoV‐Cu MSS) were investigated using an optical microscope, a scanning electron microscope, X‐ray diffraction, a transmission electron microscope, an antibacterial test, electrochemical measurements, and the salt spray test. The results showed that the hardness curve had a saddle shape and its values reached the peak value after tempering at 500°C, due to the secondary hardening effect by the precipitation of tiny secondary carbides and Cu‐rich precipitates. In addition, the antibacterial results also showed excellent antibacterial performance against Escherichia coli at 500°C because of the formation of Cu‐rich precipitates. Results of corrosion tests indicated that the corrosion resistance decreased gradually with an increase of the tempering temperature. In particular, the passivation did not occur when the tempering temperature was above 500°C, which may be related to the Cu‐rich precipitates and Cr depletion.

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Effects of cooling rate on the precipitation behavior of grain boundary carbide and corrosion resistance of 5Cr15MoV stainless steel

Cited by 5 publications

References 8 publications

Pitting Corrosion in 316L Stainless Steel Fabricated by Laser Powder Bed Fusion Additive Manufacturing: A Review and Perspective

Pitting Corrosion in 316L Stainless Steel Fabricated by Laser Powder Bed Fusion Additive Manufacturing: A Review and Perspective

Effect of Tempering Time on the Microstructure and Properties of Martensitic Stainless Steel

Effect of tempering temperature on the microstructure, corrosion resistance, and antibacterial properties of Cu‐bearing martensitic stainless steel

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