Constitutive Model for Hot Deformation Behavior of Fe-Mn-Cr-Based Alloys: Physical Model, ANN Model, Model Optimization, Parameter Evaluation and Calibration

Metals, Год журнала: 2025, Номер 15(5), С. 512 - 512

Опубликована: Май 1, 2025

The development and validation of constitutive models for high-temperature deformation are critical bridging microstructure evolution with macroscopic mechanical behavior in materials. In this study, we systematically analyzed the hot Fe-Mn-Cr-based alloys, compared modeling processes physical, phenomenological, data-driven approaches detail, optimized their structural predictive properties. First, advantages, disadvantages, applicability three traditional models, namely physical Arrhenius model, phenomenological Johnson–Cook artificial neural network (ANN) flow stress prediction. Subsequently, mathematical derivations numerical optimization methods evaluated. parameters architecture ANN model then using algorithms to enhance training efficiency prediction accuracy. Finally, sensitivity analysis integrated Bayesian posterior probability density functions enables calibration uncertainty quantification. results demonstrate that achieves superior accuracy (R2 = 0.9985, AARE 3.01%) methods. inference-based quantification parameter significantly enhances reliability interpretability parameters. This study not only reveals strain–temperature coupling effects alloys but also provides systematic methodological support high-performance a theoretical foundation material processing technology design.

Язык: Английский

Optimization of Residual Stress Microstructure and Mechanical Properties in 7075 Aluminum Alloy Via Annealing

Journal of Materials Engineering and Performance, Год журнала: 2025, Номер unknown

Опубликована: Май 12, 2025

Язык: Английский

Microstructure and dynamic recrystallization behavior of cryo-rolled Al–3 wt% Nd alloy

Journal of Rare Earths, Год журнала: 2025, Номер unknown

Опубликована: Май 1, 2025

Язык: Английский