Modified Arrhenius constitutive model and simulation verification of 2A12-T4 aluminum alloy during hot compression

Xia, Yingxiang; Shu, Xuedao; Zhang, Qingdong; Pater, Zbigniew; Li, Zixuan; Xu, Haijie; Ma, Zheng; Xu, Cheng

doi:10.1016/j.jmrt.2023.07.190

Cited by 23 publications

(4 citation statements)

References 52 publications

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“…This explains a decrease of elongation with increasing temperature during hot deformation. A hyperbolic Arrhenius constitutive model [76][77][78] is successfully constructed to estimate the flow stress behavior of this alloy in the studied temperature and strain rate range. The developed model demonstrated high predictability accuracy with the maximum error AARE of 6.6%.…”

Section: Discussionmentioning

confidence: 99%

Microstructure Evolution and Constitutive Modelling of Deformation Behavior for Al-Mg-Si-Cu-Sc-Zr Alloy Processed with Isothermal Multidirectional Forging

Mochugovskiy,

Kaplanskaya,

Mosleh

et al. 2023

Applied Sciences

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This research is devoted to the microstructure evolution and deformation behavior of the Al-1.2Mg-0.7Si-1.0Cu-0.1Sc-0.2Zr alloy during the isothermal multidirectional forging (MDF) in a large cumulative strain and temperature range. The structure investigation of the studied alloy revealed several phases precipitated during solidification, among which θ(Al2Cu), Q(Al5Cu2Mg8Si6), Mg2Si, Sc-bearing W(AlScCu) and V(AlSi2Sc2) phases were observed. The MDF at 150–350 °C and a maximum cumulative strain of 14.4 significantly refined grain structure providing a mean grain size of 1.2–2.1 µm. The L12 structured Al3(Sc,Zr) dispersoids with a mean size of 10 ± 1 nm were formed during two-step homogenization annealing. Due to Zener pinning of the nanoscale dispersoids and fine-grained structure, the alloy exhibited near-superplastic behavior in a temperature range of 460–500 °C and strain rate range of 2 × 10−3–1 × 10−2 s−1 with the maximum elongation to failure of ~300%. After a strengthening heat treatment, the forged alloy exhibited the yield strength of 326 ± 5 MPa, ultimate tensile strength of 366 ± 5 MPa, and elongation of 10 ± 3%. The hot deformation behavior was described using the Arrhenius type model. The developed model demonstrated high predictability accuracy with a maximum average absolute relative error of 6.6%.

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Section: Discussionmentioning

confidence: 99%

Microstructure Evolution and Constitutive Modelling of Deformation Behavior for Al-Mg-Si-Cu-Sc-Zr Alloy Processed with Isothermal Multidirectional Forging

Mochugovskiy,

Kaplanskaya,

Mosleh

et al. 2023

Applied Sciences

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“…Chen et al 15 used a neural network developed by a genetic algorithm to accurately predict the hot deformation behavior of AA5005 aluminum alloy. While high-accuracy forecasting of neural networks is ensured, it is often considered that the mechanisms of material deformation are ignored 16 . The linear fitting and average slope used by the Arrhenius model to calculate material parameters are the reasons why the Arrhenius model cannot be predicted with extreme precision 15 , 17 .…”

Section: Introductionmentioning

confidence: 99%

“…ensured, it is often considered that the mechanisms of material deformation are ignored 16 . The linear fitting and average slope used by the Arrhenius model to calculate material parameters are the reasons why the Arrhenius model cannot be predicted with extreme precision 15,17 .…”

mentioning

confidence: 99%

Investigation of deformation behavior and strain-induced precipitations in Al–Zn–Mg–Cu alloys across a wide temperature range

Zhang,

Zuo,

Yang

et al. 2024

Sci Rep

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This study explores the hot deformation behavior of Al–Zn–Mg–Cu alloy through uniaxial hot compression (200 °C–450°C) using the Gleeble-1500. True stress–strain curves were corrected, and three models were established: the Arrhenius model, strain compensated (SC) Arrhenius model, and strain compensated recrystallization temperature (RT) segmentation-based (TS-SC) Arrhenius model. Comparative analysis revealed the limited predictive accuracy of the SC Arrhenius model, with a 25.12% average absolute relative error (AARE), while the TS-SC Arrhenius model exhibited a significantly improved to 9.901% AARE. Material parameter calculations displayed variations across the temperature range. The SC Arrhenius model, utilizing an average slope method for parameter computation, failed to consider temperature-induced disparities, limiting its predictive capability. Hot processing map, utilizing the Murty improved Dynamic Materials Model (DMM), indicated optimal conditions for stable forming of the Al–Zn–Mg–Cu alloy. Microstructural analysis revealed MgZn2 precipitation induced by hot deformation, with crystallographic defects enhancing nucleation rates and precipitate refinement.

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“…Nevertheless, the determination of a rational constitutive relationship to describe flow stress is challenging due to the multitude of factors influencing it [14]. The most extensively employed is the Arrhenius constitutive mode [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Hot Deformation Behavior and Processing Maps Based on Murty Criterion of SAE8620RH Gear Steel

Chen,

Li,

Zhu

2023

Metals

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The hot deformation behavior and microstructure evolution of the SAE8620RH gear steel were investigated through a single-pass hot compression test at deformation temperatures between 850 and 1100 °C and strain rates between 0.02 and 8.0 s−1 by 60% reduction. A novel strain compensation constitutive model was developed, and the 2D processing maps were established by Murty’s criterion. Results showed that the relationship between material-related parameters and strain can be mathematically expressed by a highly reliable 8th-order polynomial. The constructed strain compensation constitutive model demonstrated remarkable predictive precision, as evidenced by the correlation coefficient (R) and the absolute values of average relative error (AARE) of 0.978 and 4%, respectively. The flow instability domains considerably expanded towards the high deformation temperature region as the strain increased. Microstructure analysis confirmed the accuracy of the processing map constructed by Murty’s criterion. The most noticeable optimum processing windows for SAE8620RH gear steel at a strain of 0.7 occurred within the temperature range of 1000–1100 °C and the strain rate range of 0.3–1.0 s−1, due to high η values exceeding 0.3 and equiaxial dynamic recrystallization microstructure.

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Modified Arrhenius constitutive model and simulation verification of 2A12-T4 aluminum alloy during hot compression

Cited by 23 publications

References 52 publications

Microstructure Evolution and Constitutive Modelling of Deformation Behavior for Al-Mg-Si-Cu-Sc-Zr Alloy Processed with Isothermal Multidirectional Forging

Microstructure Evolution and Constitutive Modelling of Deformation Behavior for Al-Mg-Si-Cu-Sc-Zr Alloy Processed with Isothermal Multidirectional Forging

Investigation of deformation behavior and strain-induced precipitations in Al–Zn–Mg–Cu alloys across a wide temperature range

Characterization of Hot Deformation Behavior and Processing Maps Based on Murty Criterion of SAE8620RH Gear Steel

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