The Correlation Between the Distribution/Size of Carbides and Electrochemical Behavior of 17Cr-1Ni Ferritic-Martensitic Stainless Steel

Wang, Li; Dong, Chaofang; Yu, Qiang; Cheng, Ming; Hu, Yue; Dai, Zongbiao; Li, Yong

doi:10.1007/s11661-018-4973-9

Cited by 14 publications

(6 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…No obvious passivation behavior was observed when laser power was 150 W and scanning speed was 1400 mm s −1 . Thus, when the potential was higher than corrosion potential, the current rapidly increased, which eventually created uniform corrosion on sample surface . The main reason for this corrosion was that there were many manufacturing defects, which made it very difficult to form a complete and stable passivation film on the surface of sample.…”

Section: Resultsmentioning

confidence: 99%

Effect of Manufacturing Parameters on the Mechanical and Corrosion Behavior of Selective Laser‐Melted 15‐5PH Stainless Steel

Wang

Dong

Kong

et al. 2019

steel research int.

Self Cite

View full text Add to dashboard Cite

The effect of manufacturing parameters on mechanical and corrosion resistance is investigated using tensile tests and electrochemical experiments for selective laser-melted 15-5PH stainless steel. The results demonstrate that when laser power is decreased to 150 W and scanning speed increased to 1400 mm s À1 , manufacturing defects increase. Plasticity and corrosion resistance reduce significantly. Cracks mainly originate from manufacturing defects and extend along the interface between molten pools. Corrosion occurs near manufacturing defects. Finally, the most suitable laser energy density is 130 J mm À3 for 15-5PH stainless steel.

show abstract

Section: Resultsmentioning

confidence: 99%

Effect of Manufacturing Parameters on the Mechanical and Corrosion Behavior of Selective Laser‐Melted 15‐5PH Stainless Steel

Wang

Dong

Kong

et al. 2019

steel research int.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Figure 8 displayed the TEM results for the as-received LMD Inconel 718 alloys with different Nb contents and we can see that there were some carbides in the LMD Inconel 718 alloys without Nb content, those carbides would be the initiation sites (Wang et al, 2019). However, there were no such carbides for LMD Inconel 718 alloys with high Nb content and there were lots of Laves phases in the substrate.…”

Section: Resultsmentioning

confidence: 97%

Functionally Nb graded inconel 718 alloys fabricated by laser melting deposition: mechanical properties and corrosion behavior

Zhang

et al. 2020

ACMM

Self Cite

View full text Add to dashboard Cite

Purpose Laser melting deposition (LMD) is an advanced additive manufacturing (AM) technology without powder waste, and nickel-based alloys with different Nb contents were created one-time by adjusting the ratio of mixed powders via a dual-feed system. Here, the authors provide a systematic report on the effects of the Nb content on the microstructure, Laves phase segregation and mechanical properties of as-received LMD nickel-based alloys. The effects of the Nb content on the microstructure, precipitation evolution and mechanical properties of the subsequent heat-treated LMD samples are also discussed in this paper. Design/methodology/approach Thus, the present research aims to obtain a better understanding of the effect of Nb content on the microstructural and mechanical properties of the as-received LMD Inconel 718 alloys through high-throughput sample fabrication. The microstructures were characterized by scanning electron microscopy and energy-dispersive spectroscopy, electron back-scattered diffraction and transmission electron microscopy methods. The mechanical properties were obtained from compressive tests and nano-indentation tests. Electrochemical tests, including electrochemical impedance spectroscopy and potentiodynamic polarizations, were carried out to evaluate the durability of the Inconel 718 alloys. Results can provide a factual basis for future applications of the functionally graded by AM technology. Findings The grain size of the as-received LMD Inconel 718 alloys decreased with the Nb content. The Laves phase distribution at the macro level was relatively uniform and the Laves phase exhibited a 1.5-fold nano-hardness compared with the matrix. The strength improvement for the as-received LMD Inconel 718 alloys with Nb content was attributed to grain refinement and enhancement of the Laves phase in terms of both hardness and content. Meanwhile, the corrosion resistance increased with the increase of the Nb content, especially for the pitting potential, which was attributed to the optimization of carbide precipitates due to the strong affinity between niobium and carbon. Originality/value The results provide a factual basis for the Nb content effect in LMD nickel-based alloys, and this method can greatly promote the development of new materials. The authors believe that this study makes a significant contribution to the literature and is suitable for publication.

show abstract

“…During the tempering process, as the tempering temperature is raised and the tempering time increases, the martensite obtained by quenching continuously decomposes. At the same time, carbides precipitate at the martensite and martensite grain boundaries [15][16][17][18]. The type, quantity, size, and distribution of the precipitated carbides during the tempering process are crucial to the performance of MSSs [19].…”

Section: Introductionmentioning

confidence: 99%

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

Jiang,

Wu,

Zhang

et al. 2024

Metals

View full text Add to dashboard Cite

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.

show abstract

The Correlation Between the Distribution/Size of Carbides and Electrochemical Behavior of 17Cr-1Ni Ferritic-Martensitic Stainless Steel

Cited by 14 publications

References 35 publications

Effect of Manufacturing Parameters on the Mechanical and Corrosion Behavior of Selective Laser‐Melted 15‐5PH Stainless Steel

Effect of Manufacturing Parameters on the Mechanical and Corrosion Behavior of Selective Laser‐Melted 15‐5PH Stainless Steel

Functionally Nb graded inconel 718 alloys fabricated by laser melting deposition: mechanical properties and corrosion behavior

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

Contact Info

Product

Resources

About