Thermo-kinetic modeling of Cu precipitation in α-Fe

Stechauner, Georg; Kozeschnik, Ernst

doi:10.1016/j.actamat.2015.08.042

Cited by 61 publications

(24 citation statements)

References 66 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…If the concentration of different atoms is required, an advanced method like Atom Probe Tomography (APT) [13,14] is carried out. Alternatively, the investigation by X-Ray Absorption Spectroscopy (XAS) from synchrotron source can be used to confirm the simulation results in this work as shown earlier [5]. It is relatively new to quantify the fraction of precipitates in metals.…”

Section: Introductionsupporting

confidence: 63%

“…The selected thermokinetic models contained in the software package MatCalc are claimed to be independent from these fitting parameters and therefore are selected for the simulation. This approach has been studied in several different microalloying concepts in ferrous and non-ferrous systems [5][6][7][8][9][10][11][12]. DOI Different precipitation phenomena during metal processing, e.g., primary precipitation during solidification [10], dissolution during austenitisation [8], solute drag and recrystallisation [11], precipitation during ageing and tempering [7] have been comprehensively studied and validated for the models.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Precipitation Simulation and X-Ray Absorption Spectroscopy for Hot Rolled v-Hsla Steel

Suwanpinij

Dickert

Sricharoenchai

2016

Acta Metall Slovaca

View full text Add to dashboard Cite

<p class="AMSmaintext">Aiming to the process optimisation while reducing or avoiding experimental work, the work has been carried out by a physically-based thermokinetic model proven by synchrotron X-ray absorption spectroscopy. The mole fraction and size distribution of different precipitate species as well as the consumption of the dissolved elements are of the main interest. The model considers the involved parameters in the hot rolling process, i.e., austenite grain size, disloca-tion density as a function of deformation, and thermal history during the process. One main advantage is that it needs no adjustable fitting values. Both grain boundary and dislocation are nucleation sites. The diffuse interface effect on the interfacial energy as well as a volumetric misfit of AlN at dislocations is also taken into account. The latter is because of its significant difference in the lattice parameter from the matrix. The X-Ray absorption spectroscopy (XAS) taken advantage from the synchrotron technology has been employed for the quantification of the precipitation of vanadium as well as its fraction in the solid solution. The application of XAS is highlighted as it is superior to other conventional method and illuminates relatively large volume. With very good agreement, V(C,N) precipitates significantly due to high dislocation and is not overridden by the competing AlN. Slow cooling rate facilitates its precipitation significantly. These findings are crucial for the calculation of precipitation hardening, which must be evaluated with other strengthening mechanisms from the microstructure such as grain size, hard phase to discuss about the resulting mechanical properties.</p>

show abstract

Section: Introductionsupporting

confidence: 63%

Section: Introductionmentioning

confidence: 99%

Precipitation Simulation and X-Ray Absorption Spectroscopy for Hot Rolled v-Hsla Steel

Suwanpinij

Dickert

Sricharoenchai

2016

Acta Metall Slovaca

View full text Add to dashboard Cite

show abstract

“…In order to use the same formalism for all intermetallics and simplify the analysis, modelling of single-component precipitation is assumed, where the constituent with the slowest diffusivity in Fe controls the evolution kinetics [62] where N 0 are the potential nucleation sites for precipitation, , and are constants dictated by the particle's molar volume V m , critical radius for nucleation , interfacial energy γ p and instantaneous concentration of the constituent j in the matrix towards forming the precipitates . In maraging steels, dislocations are ideal sites for precipitation nucleation due their high density [65]. 3 Hence, the number of nucleation sites (m −3 ) for precipitation is given by Ref.…”

Section: Modelling Precipitation Kineticsmentioning

confidence: 99%

Predicting microstructure and strength of maraging steels: Elemental optimisation

Galindo-Nava

Rainforth

Rivera-Dı́az-del-Castillo

2016

Acta Materialia

157

View full text Add to dashboard Cite

“…Для описания кинетики превращения используют TTT-диаграмму (time-temperature-transformation), которая показывает время необходимое для достижения заданной степени распада при заданной температуре [43,44,7]. Текущее время при КМК-моделировании оцениваем по формуле…”

Section: кинетическая Ttt диаграмма влияние структурных дефектов на unclassified

Модель распада сплава Fe-Cu с концентрационно-зависящими межатомными взаимодействиями

Razumov¹,

Шмаков²

2019

Физика Твердого Тела

View full text Add to dashboard Cite

The thermodynamics and kinetics of decomposition of a Fe–Cu alloy are investigated in the context of a simple ab initio parameterization model taking into account the concentration dependence of the magnetic contribution to the free energy. It is shown that taking into account a difference between the short-range and long-range magnetic orders near the Curie temperature is very important for calculating the solubility of copper in iron. The solubility of copper in bcc iron and the stability limit of a homogeneous state (physical spinodal) are evaluated via the kinetic Monte Carlo method. The impact of structural defects (dislocations and grain boundaries) on these curves, as well as on the kinetic time–temperature—transformation (TTT) diagram, is also discussed.

show abstract

Thermo-kinetic modeling of Cu precipitation in α-Fe

Cited by 61 publications

References 66 publications

Precipitation Simulation and X-Ray Absorption Spectroscopy for Hot Rolled v-Hsla Steel

Precipitation Simulation and X-Ray Absorption Spectroscopy for Hot Rolled v-Hsla Steel

Predicting microstructure and strength of maraging steels: Elemental optimisation

Модель распада сплава Fe-Cu с концентрационно-зависящими межатомными взаимодействиями

Contact Info

Product

Resources

About