The Coronavirus pandemic has been one of the most complex public health problems, in its magnitude, up to present moment human history. One possibility guide policies combat this disease is proposition predictive models regarding dissemination SARS-CoV-2. This article aims some methods, non-linear fits and computational used estimate propagation countries such as Italy Brazil. We highlight a So...

In this study, three-dimensional finite-element (FE) analyses were carried out to predict the volume fractions of various phases generated during the quenching process of plain-carbon steel and the temperature history, considering the latent heat generated due to phase transformation. Diffusional phase transformation for a nonisothermal process was described by discretizing the cooling curve in...

Abstract The kinetics of reversed austenite formation in 301 stainless steel and its effect on the deformation an automobile front bumper beam are studied by using modeling approaches at different length scales. diffusion-controlled is Johnson–Mehl–Avrami–Kolmogorov (JMAK) model, based experimental data. model can be used to predict volume fraction a temperature range 650–750 °C. A three-dimens...

Abstract Knowledge of a material’s thermal stability under extreme synergistic particle and heat loads is crucial for developing high performance reactor materials. In this work, the recrystallization behaviour tungsten influence hydrogen investigated by low energy flux plasma exposure various lengths time. The microstructural changes following are probed micro-indentation, electron back-scatte...

We carry out an extensive comparison between Johnson–Mehl–Avrami–Kolmogorov (JMAK) theory of first-order phase transformation kinetics and phase-field (PF) results a benchmark problem on nucleation. To address the stochasticity problem, several hundreds simulations are performed to establish comprehensive, statistically significant analysis coincidences discrepancies PF JMAK kinetics. find that...

The recrystallization assisted microstructural changes during cyclic heat exposure are surmised detrimental to the thermal fatigue resistance of tungsten monoblocks that cover surface divertor components a nuclear fusion reactor. A numerical framework predict in is presented this work. based on model coupled Johnson-Mehl-Avrami-Kolomogorov (JMAK) type model. influence initial (starting) state, ...