Structure and corrosion resistance of oxides grown on maraging steel in steam at elevated temperatures

Rezek, J.; Klein, Itzik; Yahalom, J.

doi:10.1016/s0169-4332(96)00587-9

Cited by 36 publications

(32 citation statements)

References 5 publications

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“…Jha et al [10] studied SCC of maraging steel and found that an intergranular mode of cracking occurs. Study made on 250 grade maraging steel at elevated temperature in steam has shown that it offers better protection compared to manganese phosphate treatment [11]. SCC susceptibility of steel was caused by acid dip step in the pretreatment of phosphating process [12].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and corrosion behaviour of gas tungsten arc welds of maraging steel

Reddy

Rao

2015

Defence Technology

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Superior properties of maraging steels make them suitable for the fabrication of components used for military applications like missile covering, rocket motor casing and ship hulls. Welding is the main process for fabrication of these components, while the maraging steels can be fusion welded using gas tungsten arc welding (GTAW) process. All these fabricated components require longer storage life and a major problem in welds is susceptible to stress corrosion cracking (SCC). The present study is aimed at studying the SCC behaviour of MDN 250 (18% Ni) steel and its welds with respect to microstructural changes. In the present study, 5.2 mm thick sheets made of MDN 250 steel in the solution annealed condition was welded using GTAW process. Post-weld heat treatments of direct ageing (480 C for 3 h), solutionizing (815 C for 1 h) followed by ageing and homogenizing (1150 C for 1 h) followed by ageing were carried out. A mixture of martensite and austenite was observed in the microstructure of the fusion zone of solutionized and direct aged welds and only martensite in as-welded condition. Homogenization and ageing treatment have eliminated reverted austenite and elemental segregation. Homogenized welds also exhibited a marginal improvement in the corrosion resistance compared to those in the as-welded, solutionized and aged condition. Constant load SCC test data clearly revealed that the failure time of homogenized weld is much longer compared to other post weld treatments, and the homogenization treatment is recommended to improve the SCC life of GTA welds of MDN 250 Maraging steel.

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Section: Introductionmentioning

confidence: 99%

Microstructure and corrosion behaviour of gas tungsten arc welds of maraging steel

Reddy

Rao

2015

Defence Technology

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“…This is consistent with thermodynamic calculations where an element forming oxides with different states will have the oxide with higher state (such as Fe 2 O 3 ) situated on top of the lower state oxide (Fe 3 O 4 ), instead of forming a mixture of both. 36) Exfoliation was observed between the interfaces of spinel-magnetite and magnetite and hematite, due to thermal expansion mismatch. 26) Another study found oxide formed in 500°C SCW consisted of magnetite/spinel adjacent to the substrate and an external layer of hematite (Fe 2 O 3 ).…”

Section: Discussionmentioning

confidence: 99%

Corrosion Behaviour of Alloy 800H in Low Density Superheated Steam

Bsat

Huang

2016

ISIJ Int.

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“…The patent 51 mentions that the process can be used for other steels, but has been developed aiming at the maraging steels with a chemical composition range of (wt.%): Ni = 10-26; Co = 6-18; Mo = 2-12 e Ti = 0.5-2.0. Rezek et al 52 characterized the crystalline structure (using X-ray diffraction) and the chemical composition of the oxide film (using AES/AIS and ESCA) that forms on the surface of maraging 250 steel exposed to superheated water vapor at 485 °C for 3 hours. The X-ray diffractions showed the presence of an internal layer of austenite, followed by a magnetite (Fe 3 O 4 ) layer and a larger amount of hematite (Fe 2 O 3 ).…”

Section: Resistance To Oxidation and Corrosionmentioning

confidence: 99%

A Short Review on Ultra-High-Strength Maraging Steels and Future Perspectives

et al. 2021

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Maraging steels are among the highest strength steels commercially available. Despite being relatively rare and expensive, they may present a yield strength around 3 GPa and are indispensable for various applications. In the present paper, several aspects will be reviewed related to maraging steels including a brief history of its development, microstructure and acting hardening mechanisms, loss of toughness with the tensile strength increase, resistance to oxidation, and corrosion, nitriding behavior, and future perspectives.

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Structure and corrosion resistance of oxides grown on maraging steel in steam at elevated temperatures

Cited by 36 publications

References 5 publications

Microstructure and corrosion behaviour of gas tungsten arc welds of maraging steel

Microstructure and corrosion behaviour of gas tungsten arc welds of maraging steel

Corrosion Behaviour of Alloy 800H in Low Density Superheated Steam

A Short Review on Ultra-High-Strength Maraging Steels and Future Perspectives

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