Flow stress and microstructural evolution of the horizontal continuous casting Al–0.96Mn–0.38Si–0.18Fe alloy during hot compression

Zhang, Hui; Jiang, Fulin; Shang, Xiao-Yang; Li, Luoxing

doi:10.1016/j.msea.2013.01.075

Cited by 22 publications

(4 citation statements)

References 30 publications

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“…It can be seen that temperature rises increased with the increase of strain and strain rate and the decrease of deformation temperature. There was a linear relationship between temperature rise and strain under a constant deformation temperature with the strain rate, and similar behaviors were also observed in other materials [21,22]. The calculated temperature rises were consistent with those of the measured, which indicated the reliability of the calculation results.…”

Section: Resultssupporting

confidence: 85%

Temperature rises and constitutive equation of homogenized 6063 aluminum alloy for extrusion

Li,

Guo,

Liu

et al. 2023

Mater. Res. Express

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The effect of temperature rises on the flow stress and constitutive equation of homogenized 6063 aluminum alloy was studied by theoretical analysis, numerical simulation, and experiments. The results showed that the temperature rises increased with the decreases of deformation temperatures and the increases of strain rates, which caused the flow softening. The modification of the flow stresses of 6063 aluminum alloy was carried out. A strain compensation constitutive equation based on the Arrhenius equation and Zener-Hollomon parameter was introduced to predict the flow behavior of 6063 aluminum alloy. The calculated flow stresses were consistent with the experimental results, and its average absolute relative error was only 3.25%. Finally, the established constitutive equation was substituted into the Deform-3D software. The corresponding extrusion experiments were carried out. The maximum extrusion pressures and maximum exit temperatures in the numerical simulation were in good agreement with those in the experiments, which confirmed the accuracy and reliability of the established constitutive equation.

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Section: Resultssupporting

confidence: 85%

Temperature rises and constitutive equation of homogenized 6063 aluminum alloy for extrusion

Li,

Guo,

Liu

et al. 2023

Mater. Res. Express

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show abstract

“…When the deformation continues and the softening rate is greater than the hardening rate, the curve will have a downward trend. In the actual plastic deformation process, the flow stress can not only reflect the microstructural evolution law and deformation mechanism, it can also measure the excellence in its processing under specific technology [ 15 , 16 , 17 ]. At higher strain rates of 1 s −1 and 10 s −1 , there is no obvious softening phenomenon of the curve.…”

Section: Resultsmentioning

confidence: 99%

“…It can express the internal relationship between flow stress ( σ ), deformation temperature ( T ), and strain rate (

) [ 18 , 19 , 20 ]. It is usually expressed by the hyperbolic sine function Arrhenius equation proposed by Sellars and Tegart, which includes the deformation temperature and the strain activation energy ( Q ), and at the same time, the temperature compensation strain rate factor Z (Zener–Hollomon) is also taken into consideration [ 16 , 21 , 22 , 23 ]

…”

Section: Resultsmentioning

confidence: 99%

Hot Deformation Behavior and Microstructure Evolution of 6063 Aluminum Alloy Modified by Rare Earth Y and Al-Ti-B Master Alloy

et al. 2020

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The hot deformation behaviors of the new 6063 aluminum alloy modified by rare earth Y and Al-Ti-B master alloy were studied through isothermal hot compression experiments on the Gleeble-3800 thermal simulator. By characterizing the flow curves, constitutive models, hot processing maps, and microstructures, we can see from the true stress–true strain curves that the flow stress decreases with the increase of deformation temperature and the decrease of strain rate. Through the calculation of the constitutive equation, we derived that the activation energy of the new composite modified 6063 aluminum alloy is 224.570 KJ/mol. we roughly obtained its excellent hot processing range of temperatures between 470–540 °C and the strain rates of 0.01–0.1 s−1. The verification of the deformed microstructure shows that with the decrease of lnZ, the grain boundary changes from a low-angle one to a high-angle one and the dynamic recrystallization is dominated by geometric dynamic recrystallization and continuous dynamic recrystallization. Analysis of typical samples at 480 °C/0.01 s−1 shows that the addition of rare earth Y mainly helps form Al3Y5 and AlFeSiY phases, thus making the alloy have the performance of high-temperature recrystallization, which is beneficial to the hot workability of the alloy.

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“…Horizontal continuous casting (HCC) has been widely employed in casting of nonferrous metal wires such as aluminum, magnesium, zinc, copper and their alloys due to its characteristic superiorities which includes low investment cost, low energy consumption, high efficiency and high surface quality [4][5][6][7]. Continuous extrusion forming process, i.e.…”

Section: Introductionmentioning

confidence: 99%

Microstructures and properties of Al–Mg–SI alloy overhead conductor by horizontal continuous casting and continuous extrusion forming process

Zhang

Luo

et al. 2016

Materials Science and Engineering: A

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Flow stress and microstructural evolution of the horizontal continuous casting Al–0.96Mn–0.38Si–0.18Fe alloy during hot compression

Cited by 22 publications

References 30 publications

Temperature rises and constitutive equation of homogenized 6063 aluminum alloy for extrusion

Temperature rises and constitutive equation of homogenized 6063 aluminum alloy for extrusion

Hot Deformation Behavior and Microstructure Evolution of 6063 Aluminum Alloy Modified by Rare Earth Y and Al-Ti-B Master Alloy

Microstructures and properties of Al–Mg–SI alloy overhead conductor by horizontal continuous casting and continuous extrusion forming process

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