Effect of Aging Time on the Microstructure and Corrosion Behavior of 2507 Super Duplex Stainless Steel in Simulated Marine Environment

Zhu, Mei-Jia; He, Feng; Yuan, Yongfeng; Yin, Simin; Guo, S.Y.; Pan, Jun

doi:10.1007/s11665-021-05812-2

Cited by 8 publications

(3 citation statements)

References 56 publications

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“…In radar engineering practice, it has been found that the protective system of thermal spraying zinc matched with organic coatings sometimes experiences rapid deterioration such as coating blistering. This phenomenon is different from the atmospheric corrosion of zinc reported in the relevant literature, especially since its corrosion rate is significantly higher than that of ordinary atmospheric corrosion [6][7][8] , which should be related to the matching performance between thermal sprayed zinc and organic coating. Therefore, the matching performance between organic coating systems and thermal sprayed zinc coatings, especially the performance of sealer coats in organic coating systems, requires systematic optimization research.…”

Section: Introductioncontrasting

confidence: 72%

Study on the protective performance of coating system for thermal spraying zinc on radar

Yang,

Wang,

et al. 2024

J. Phys.: Conf. Ser.

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In response to the harsh marine environment protection needs of radar, the protective performance of 9 types of coating systems for thermal spraying zinc was studied through condensation tests, salt spray tests, and temperature tests. The blistering phenomenon of the radar thermal spraying zinc matching protective coating system was analyzed. The research results showed that the blistering of the thermal spraying zinc matching protective coating system may be related to the pores of the sealing coating. Among the 9 coating systems, the comprehensive performance of B and D coating systems in terms of moisture resistance, salt spray resistance, and temperature stress resistance is significantly superior to other coatings. The radar using B and D coating systems has been successfully applied to various types of harsh marine environments, improving the radar’s protective performance.

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Section: Introductioncontrasting

confidence: 72%

Study on the protective performance of coating system for thermal spraying zinc on radar

Yang,

Wang,

et al. 2024

J. Phys.: Conf. Ser.

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“…Generally speaking, with the increase of experiment time, the potential (corrosion potential, E corr , and opencircuit potential, E OCP ) and corrosion current density (I corr ) gradually increased, indicating that the corrosion rate of 15CrMo steel was accelerated [24]. In detail, the polarization curves of 15CrMo steel on 1st and 3rd day basically coincided, and there was an obvious passivation region in the anode segment of these polarization curves, in which the passivation potential and over-passivation potential were −0.90 V and −0.65 V, respectively [25][26][27]. Furthermore, the polarization curve still showed obvious anode passivation zone on the 10th day, as shown in figure 4(b).…”

Section: Electrochemical Analysismentioning

confidence: 92%

Study on failure evolution of 15CrMo steel used for aviation kerosene hydrogenation unit

Liu

Wang

Cui

et al. 2023

Mater. Res. Express

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In aviation kerosene hydrogenation unit, the 15CrMo steel with good resistance to hydrogen embrittlement performed obvious pitting corrosion with certain micro-cracks in H2/H2S environment. In this paper, the failure behavior of 15CrMo steel in H2/H2S environment had been studied using electrochemical method and microscopic morphology. The results showed that within 10 days, the 15CrMo steel performed good resistance with a smaller max pit depth (15.48 μm on the 10th day) in H2/H2S environment, proved by the passivation zone (-0.75~-0.62 V on 10th day). Furthermore, 15CrMo steel exhibited activated corrosion with a significantly increasing max pit depth and corrosion current density, especially, reaching 131.91 μm and 17.29 μA/m2 on 30th day. Moreover, the stress corrosion cracking caused by H2S appeared on 30th day.

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“…Super duplex stainless steels (SDSS) of SAF2507 have gained significant attention in various industries such as Mining, marine, power stations, petrochemical, and other industries, [1][2][3][4][5]. 2507-SDSS characterized by its balanced composition of ferrite (α) and austenite (γ), [6][7][8], offers several distinct advantages in various applications.…”

Section: Introductionmentioning

confidence: 99%

Effect of Multi-Pass Shielded Metal Arc Welding on Microstructure Characterization and Mechanical Properties of 2507 Super Duplex Stainless Steel

2023

Journal of the Egyptian Society of Tribology

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The present work investigates the weldability, microstructure, and mechanical properties of 6 mm thick 2507 super duplex stainless steel were welded by multi-pass shielded metal arc welding technique (SMAW) with ER2595 electrode using different heat inputs. The produced joint was characterized and evaluated by using radiographic inspection, liquid penetrant test, scanning electron microscopy, optical microscopy, hardness and tensile test. The results obtained demonstrated that the filler electrode, heat inputs and interpass temperature are the parameters control for produce of defect-free joint. The 2507 SDSS shielded metal arc welding show an improvement in hardness and yield strength compared to the base metal. The weld zone exhibited four distinct morphologies of austenite including secondary austenite (SA), Widmanstatten austenite (WA), intra-granular austenite (IGA), and grain boundary austenite (GBA), in addition to the presence of ferrite. The ferrite content in the weld zone remained close to the balance ratio of base metal and showed no significant variation when using different welding parameters.

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Effect of Aging Time on the Microstructure and Corrosion Behavior of 2507 Super Duplex Stainless Steel in Simulated Marine Environment

Cited by 8 publications

References 56 publications

Study on the protective performance of coating system for thermal spraying zinc on radar

Study on the protective performance of coating system for thermal spraying zinc on radar

Study on failure evolution of 15CrMo steel used for aviation kerosene hydrogenation unit

Effect of Multi-Pass Shielded Metal Arc Welding on Microstructure Characterization and Mechanical Properties of 2507 Super Duplex Stainless Steel

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