Research on Nitrogen Solubility of Fe–Cr–Mn–V–N System Alloys in Liquid and Solid Phases

Cheng, Jinkun; Shen, Houfa

doi:10.1007/s12666-018-1374-0

Cited by 10 publications

(1 citation statement)

References 18 publications

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“…Traditionally, ferrovanadium nitride could be synthesized by direct nitridation of ferrovanadium alloy, carbothermal reduction-nitridation or hydrogen-based reduction-nitridation of corresponding metallic oxides, using nitrogen or ammonia gas as nitrogen sources. The current methods are classified as solid nitridation, liquid nitridation, sintering processes, plasma smelting and carbothermal reduction-nitridation [1,[12][13][14][15][16][17][18][19][20][21]. Grishchenko et al have synthesized ferrovanadium nitride using ferrovanadium as raw material via roasting at 1327 K in a vacuum furnace for about 17 h [12].…”

Section: ) and High Melting Pointmentioning

confidence: 99%

Reduction and Nitridation of Iron/Vanadium Oxides by Ammonia Gas: Mechanism and Preparation of FeV45N Alloy

Liu

Wang

You

et al. 2020

Metals

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The steel micro-alloyed with ferrovanadium nitride has extremely superior properties that make it widely utilized in structural components, construction and aircraft. The conventional methods for synthesizing ferrovanadium nitride include nitridation of pure ferrovanadium alloy or carbothermal nitridation of metallic oxides, using nitrogen or ammonia gas as nitrogen sources. In this study, ferrovanadium nitride (FeV45N) was prepared by direct reduction and nitridation of the corresponding metal oxides with ammonia as the reductant and nitrogen source. This method avoids the introduction of other impurity elements, except the negligible trace elements accompanied with the raw materials. The thermodynamics of the reduction and nitridation process were initially analyzed. During the subsequent ammonia reduction process, the FeV45N powders were successfully obtained at 1273 K for 6 h. The obtained powders were pressed into cylindrical briquettes by hot pressing (HP) at 1473 K for 1 h in vacuum. In the investigation, the X-ray diffraction and morphological analysis of the products was also carried out, and the reaction mechanisms were discussed in detail. The nitrogen content of the final product can reach 11.85 wt. %, and the residual oxygen content can be reduced to 0.25 wt. %. By sintering, the density of the alloy can reach 5.92 g/cm 3 .

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Section: ) and High Melting Pointmentioning

confidence: 99%

Reduction and Nitridation of Iron/Vanadium Oxides by Ammonia Gas: Mechanism and Preparation of FeV45N Alloy

Liu

Wang

You

et al. 2020

Metals

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Production of Nitrogen‐Alloyed Stainless Steels in Argon Oxygen Decarburization Converter: Kinetics and Modeling of Nitrogenation and Denitrogenation

Pitkälä,

Holappa,

Jokilaakso

2023

steel research int.

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The study aims to comprehend the behavior of nitrogen in the argon oxygen decarburization (AOD) process during the production of nitrogen‐alloyed stainless steels, where the precise adjustment of nitrogen content plays a crucial role in enhancing productivity. Furthermore, the objective is to investigate the rate of change in nitrogen content when blowing a mixture of nitrogen and argon, instead of using pure nitrogen or argon alone. Hence, both nitrogenation and denitrogenation cases are examined, and kinetic models are developed. While solution thermodynamics can predict the final nitrogen content, the kinetics are influenced by the gas flow rate, steel temperature and composition, and levels of the surface active elements in the steel. By integrating a previously developed thermodynamic equilibrium equation with the kinetic models, nitrogen contents in the range of 0.150–0.400% can be reliably predicted. Consequently, the equations can be applied to predict nitrogen content during both the nitrogenation and denitrogenation stages in the reduction and desulfurization phases of the AOD process.

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Partitioning behavior of N and its effect on hot deformation behavior of duplex stainless steels 2101 and 2205

Feng

et al. 2022

J Mater Sci

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Research on Nitrogen Solubility of Fe–Cr–Mn–V–N System Alloys in Liquid and Solid Phases

Cited by 10 publications

References 18 publications

Reduction and Nitridation of Iron/Vanadium Oxides by Ammonia Gas: Mechanism and Preparation of FeV45N Alloy

Reduction and Nitridation of Iron/Vanadium Oxides by Ammonia Gas: Mechanism and Preparation of FeV45N Alloy

Production of Nitrogen‐Alloyed Stainless Steels in Argon Oxygen Decarburization Converter: Kinetics and Modeling of Nitrogenation and Denitrogenation

Partitioning behavior of N and its effect on hot deformation behavior of duplex stainless steels 2101 and 2205

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