Flow Behavior, Dynamic Recrystallization and Processing Map of Mg-20Pb-1.6Al-0.4B Alloy

LI, Rongxing; Duan, Yonghua; S., L.; Chen, Snow

doi:10.1007/s11665-017-2681-z

Cited by 27 publications

(2 citation statements)

References 48 publications

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“…[ 30 ] Therefore, MARE and RMSE were quantified through individual comparisons of relative errors to evaluate the accuracy of the predictive models developed in this study. [ 31 ] Figure a–c show the relationship between the calculated (predicted) values and experimental values for the three sets of functions, respectively. The red dashed line in the figures represents the ideal line where the calculated values perfectly match the experimental values.…”

Section: Resultsmentioning

confidence: 99%

Prediction of Flow Stress and Characterizing the Deformation Mechanism of As‐Extruded 7005 Aluminum Alloy

Lin,

Tzeng

2024

Adv Eng Mater

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This study explores isothermal hot compression of the as‐extruded 7005 aluminum alloy within a temperature range of 573–823 K, with strain rates from 0.001 to 1 s−1 and a strain of 1.2. Three constitutive equations, employing hyperbolic sine, power law, and exponential functions, were formulated and compared to predict rheological peak stress accuracy and applicability. The results indicate that the hyperbolic sine function is suitable across all stress levels, the power law function for low stress (< 56 MPa), and the exponential function for high stress (> 56 MPa). Introducing a strain compensation function enhances hyperbolic sine function accuracy. The stress exponent (n) and activation energy (Q) decrease with increased deformation, indicating a transition in the deformation mechanism from early‐stage dislocation climb to later‐stage dislocation glide. At 773 K with strain > 0.6, the presence of precipitates maintains the n value at approximately 4. Solute atoms (Zn, Mg, and Zr) and precipitates (MgZn2 and Al3Zr) impede diffusion and dislocation motion, resulting in deformation activation energies surpassing pure aluminum. Additionally, kernel average misorientation maps demonstrate that higher deformation temperatures and lower strain rates reduce internal residual stresses.This article is protected by copyright. All rights reserved.

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Section: Resultsmentioning

confidence: 99%

Prediction of Flow Stress and Characterizing the Deformation Mechanism of As‐Extruded 7005 Aluminum Alloy

Lin,

Tzeng

2024

Adv Eng Mater

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“…The material may exhibit poor formability in the instability region while it may show enhanced formability under other processing conditions, the so-called stability region. 7–9 Deformation processing maps, which give a formability evaluation index, can provide information for determining the regions of good formability for high-temperature deformation. 10–12…”

Section: Introductionmentioning

confidence: 99%

Characterization of deformation processing maps of 304L stainless steel based on compressive and tensile flow curves

Park

Tyne

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part C:

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The efficiency factor (η) and the instability factor ([Formula: see text] in deformation processing maps are regarded as the reliable indices of formability during high-temperature deformation. Deformation processing maps are primarily based on strain rate sensitivity ( m) and are usually created by high-temperature compression tests. To analyze the effect of the mode of flow on the deformation processing map, deformation processing maps based on both compressive and tensile flow curves for 304L stainless steel were determined and compared in the current study. As the instantaneous strain rate varies during both the tensile and compression tests when a constant crosshead speed is used, strain rate compensated deformation processing maps have been determined and compared. In addition, the frictional effect of barreling during compression testing on the deformation processing map has been analyzed. Both deformation processing maps based on either compressive or tensile flow curves are estimated to be complementary.

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Hot Compressive Deformation Characteristics of Al-9.3Zn-2.4Mg-1.1Cu Alloy

Liu,

Hao,

Xie

2024

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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Flow Behavior, Dynamic Recrystallization and Processing Map of Mg-20Pb-1.6Al-0.4B Alloy

Cited by 27 publications

References 48 publications

Prediction of Flow Stress and Characterizing the Deformation Mechanism of As‐Extruded 7005 Aluminum Alloy

Prediction of Flow Stress and Characterizing the Deformation Mechanism of As‐Extruded 7005 Aluminum Alloy

Characterization of deformation processing maps of 304L stainless steel based on compressive and tensile flow curves

Hot Compressive Deformation Characteristics of Al-9.3Zn-2.4Mg-1.1Cu Alloy

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