The role of nitrogen in microalloyed steels
Webb19 juli 2013 · The scope of this review will include the historical background on quenched and tempered vanadium steels, precipitation during isothermal aging, conventional … Webb25 feb. 2024 · In order to investigate the influence of vanadium microalloying on deformation-induced pearlite transformation (DIPT) of eutectoid steel, thermomechanical simulation tests were carried out in this study. The following four compositions of vanadium microalloying were applied in the tests: vanadium free in Steel A, vanadium …
The role of nitrogen in microalloyed steels
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WebbWhat's more, the Mo addition could increase the precipitation ratio of Nb, and the amount of the M C-type carbide with nanometer size in Nb-Mo microalloyed steel is evidently larger than that of in Nb microalloyed steel. Those M C-type carbide were identified as synthetic carbide (Nb, Mo)C, exhibiting low coarsening rate than that of NbC ... WebbIn all of these, the presence of nitrogen plays an important role for enhancing strength through precipitation of V(C,N) in ferrite while in several cases grain refinement by …
WebbOxide forming elements, such as Mg, Ti, and Zr, can be added to the microalloyed steels to enhance acicular ferrite during the austenite-ferrite transformation. Li et al. [ 11 ] … Webb1 dec. 2015 · The influences of nitrogen content and austenitization temperature on Nb(C,N) precipitation in niobium micro-alloyed steels were studied by different methods: optical microscopy, tensile tests, scanning electron microscopy, transmission electron microscopy, physicochemical phase analysis, and small-angle X-ray scattering. The …
Webb30 juli 2024 · Precipitation is one of the most important influences on microstructural evolution during thermomechanical processing (TMCP) of micro-alloyed steels. Due to … WebbIn the steels processed with the technology of TiN dispersion, enhanced nitrogen content makes TiN particles more stable and efficient in pinning the austenite grain …
Webb1 juli 2024 · The austenite grain growth behavior of microalloying elements free steel (nitrogen steel) and micro alloyed steel (V−N steel and V−Ti−N steel) was investigated. The equilibrium dissolving behavior of… Expand 2 Save Alert Austenite Grain Refinement and Homogenization Control of the Flexspline for Industrial Robot Harmonic Drive
Webb8 juli 2024 · microalloyed steel can decrease ferrite content and refine grain size, which can be attributed to the role of Nb in delaying ferrite transformation. Figure 1. OM and SEM micrographs of experimental steels (a) (c) Ti steel, (b) (d) Nb-Ti steel. Fine precipitates with size of less than 10 nm were obtained in ferrite, as shown in Figure 2. It dickson county board of educationWebb18 juli 2013 · This paper analyses the effect of carbon and nitrogen content on the austenite microstructural homogeneity before transformation in the thin slab direct rolling of Nb and Nb–V microalloyed steels. The study was made with the help of a microstructural hot working model adapted to the metallurgical peculiarities associated … cit world merit badge answersWebbnitrogen and sulphur, overcome red shortness in high sulphur steels and improve the mechanical properties. They also identified zirconium nitride by optical microscopy and concluded that the improvement in properties was associated firstly with the removal of nitrogen as Zr 3N 2, while the remaining zirconium combined with sulphur, which was ... citw taxWebb24 feb. 2016 · Abstract. The influence of microalloying with nitrogen and also vanadium and other nitride-forming elements on the properties of manufacturing steels is … cit-wwWebb29 aug. 2006 · The paper summarizes the results of several studies of effect of the steel composition, hot and cold deformation of the nature of the precipitated phases, the microstructure and properties of medium- dickson county basketballWebbCarbides and nitrides precipitate in three main stages in microalloyed steels processing 13: (i) in the liquid phase or during solidification process; (ii) during controlled rolling by … dickson county bankWebb25 feb. 2024 · In order to investigate the influence of vanadium microalloying on deformation-induced pearlite transformation (DIPT) of eutectoid steel, … city08