Influence of Temperature-Dependent Properties of Aluminum Alloy on Evolution of Plastic Strain and Residual Stress during Quenching Process

Zhang, Yuxun; Yi, Youping; Huang, Shiquan; He, Hailin

doi:10.3390/met7060228

Cited by 20 publications

(7 citation statements)

References 17 publications

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“…The 2A14 alloy yield strength values required for the simulation model under varying temperature and plastic strain conditions are provided in Figure 5. Table 3 describes the thermal properties (such as thermal conductivity, specific heat capacity, elastic modulus, Poisson's ratio, and thermal expansion coefficient) required for the FEM model [21]. The size of the FEM simulation model was the same as that of the reduced-scale tapered cylinder forging samples used in the experiments (Figure 1).…”

Section: Fem Modeling Of Quenching and Cold Bulging Processesmentioning

confidence: 99%

Reduction of Residual Quenching Stresses in 2A14 Aluminum Alloy Tapered Cylinder Forgings via a Novel Cold Bulging Process

Wang

Huang

et al. 2021

Metals

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This study combined finite element method (FEM) simulations and physical experiments to develop a novel cold bulging process, with the aim of studying and mitigating the quenching residual stresses in 2A14 tapered cylinder forgings. The samples underwent cold bulging at different ratios (0–4.0%) to evaluate the residual stress reduction performance (via the hole-drilling strain-gauge method) and the improvements in their mechanical properties. The FEM simulation and experimental results revealed that our proposed cold bulging process reduced the quenching residual stresses by up to 85–87%. The density and uniformity of the precipitated phases increased along with the extent of cold bulging, as confirmed by transmission electron microscope (TEM) observations. Furthermore, compared to the unprocessed samples, the tensile and yield strengths, and elongation of the samples with 3% cold bulging were significantly enhanced (65 MPa, 55 MPa, and 1.7%, respectively).

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Section: Fem Modeling Of Quenching and Cold Bulging Processesmentioning

confidence: 99%

Reduction of Residual Quenching Stresses in 2A14 Aluminum Alloy Tapered Cylinder Forgings via a Novel Cold Bulging Process

Wang

Huang

et al. 2021

Metals

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“…Solution treatment followed by water quenching or air cooling to obtain the supersaturated solid solution state [3], with subsequent artificial aging [4][5][6] is the conventional heat treatment for magnesium alloys. In the process, the temperature changes itself and residual stress (RS) induced by the temperature gradient in the cooling process will affect the properties of the material, for instance, the RS could reduce dimensional stability [7], mechanical properties [8], corrosion resistance [9], and fatigue properties [10].…”

Section: Introductionmentioning

confidence: 99%

Study on the Optimization of Heat Transfer Coefficient of a Rare Earth Wrought Magnesium Alloy in Residual Stress Analysis

Xie,

Wu,

et al. 2024

Metals

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To investigate the heat transfer coefficient (HTC) of a newly developed rare-earth wrought magnesium alloy under different cooling rates, the experiment of solution treatment followed by water quenching or air cooling process was carried out for calculation by lumped capacitance method (LCM) and optimized by inverse heat transfer method (IHTM), and cooling temperature curves were simulated afterward. In water quenching, the larger the temperature difference between the sample and water, the larger the maximum HTC, and the earlier it reached the maximum value, and in air cooling the HTC became larger with the airflow speeds increased. In LCM, the peak values of the HTC were 2840 W/(m2·°C) in water quenching and 54 W/(m2·°C) in air cooling. The corresponding HTC was 2388 W/(m2·°C) in IHTM. The maximum absolute average relative error (AARE) of temperature simulation in water quenching decreased from 8.46% in LCM to 2.45% in IHTM. The residual stress(RS) of a large conical component was simulated using both non-optimized and optimized HTC, the RS in the IHTM was ~30 MPa smaller than that in the ILCM, because the corresponding HTC was smaller, and the comparison of the simulation results with the measurements revealed that the RS using HTC in the IHTM is more accurate.

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“…Bouissa [11] and Koc et al [12] have established thermomechanical models based on finite element analysis (FEM) to predict the residual stress induced during the quenching process. Zhang [13] studied the relationship between residual stress and material parameters (thermal expansion coefficients, elastic moduli, and yield strengths) for a 2A14 Al alloy, and investigated stress evolution during quenching. The Sandia National Laboratory [14,15] in the US has conducted research on aerospacegrade aluminum alloys, revealing that the magnitude of residual stress resulting from quenching is approximately linearly proportional to the thickness of the plate [16,17].…”

Section: Introductionmentioning

confidence: 99%

Quenched Residual Stress Reduction in Pentagon-Curved Aluminum Alloy Forgings Using the Bulging Process

Luo,

Li,

Zhang

et al. 2023

Materials

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Quenched residual stress in pentagon-curved forgings (PCGs) often leads to severe deformation during subsequent machining operations. This study aims to mitigate the quenched residual stress in PCGs through the implementation of the bulging method. The edge distance ratio (e/D), a geometric characteristic of PCGs, is defined and considered in the established thermo-mechanical model, which incorporates the effects of quenched residual stress. Increasing e/D resulted in amplified maximum internal stresses and surface stresses. To address this issue, a bulging finite element (FE) model was developed to effectively alleviate the quenched residual stress. The stress reduction in surface stress and internal stress was qualified using average stress reduction (Ra) and peak stress reduction (Rp), respectively. Notably, stress reduction exhibited an inverse relationship with e/D, indicating that decreasing e/D yields greater stress reduction. Furthermore, an overall stress reduction assessment was conducted for different bulging ratios, revealing that the stress reduction increased as the bulging ratio increased. A comprehensive comparison of different bulging ratios highlighted 2% as the most optimal bulging ratio for stress reduction in PCGs. X-ray diffraction measurement and the contour method were employed to determine surface stress and internal stress, respectively. The experimental results were in agreement with the simulation outcomes, validating the high accuracy of the FE model.

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Influence of Temperature-Dependent Properties of Aluminum Alloy on Evolution of Plastic Strain and Residual Stress during Quenching Process

Cited by 20 publications

References 17 publications

Reduction of Residual Quenching Stresses in 2A14 Aluminum Alloy Tapered Cylinder Forgings via a Novel Cold Bulging Process

Reduction of Residual Quenching Stresses in 2A14 Aluminum Alloy Tapered Cylinder Forgings via a Novel Cold Bulging Process

Study on the Optimization of Heat Transfer Coefficient of a Rare Earth Wrought Magnesium Alloy in Residual Stress Analysis

Quenched Residual Stress Reduction in Pentagon-Curved Aluminum Alloy Forgings Using the Bulging Process

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