Study on hot deformation behavior and intrinsic workability of 6063 aluminum alloys using 3D processing map

Liu, Yang; Geng, C.; Lin, Qiquan; Xiao, Yifeng; Xu, Junrui; Kang, Wei

doi:10.1016/j.jallcom.2017.04.156

Cited by 67 publications

(19 citation statements)

References 31 publications

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“…The thermo-mechanical processing maps (PMs) were extensively used to describe the microstructure evolution and establish the processing window, which provide guides for the industrial manufacturing such as rolling, extrusion, and forging [10,14,32,33]. PMs can be obtained by the dissipation power diagram and the processing instability diagram.…”

Section: Processing Mapmentioning

confidence: 99%

“…As shown in Table 4, the lnZ value decreases with reducing deformation rates when the deformation temperature is 370 • C. Most of the grain boundaries remain straight, and DRV is the main softening mechanism in Figure 7a-c. The dislocations in this process change from the mixed arrangement of high-energy states to the regular arrangement of low-energy states, forming vertically arranged dislocation walls [8,33]. The strain rates of Figure 7a,d, and e are fixed at 0.01 s −1 , and the value of lnZ decreases with an increasing deformation temperature, as shown in Table 4.…”

Section: Microstructure Analysismentioning

confidence: 99%

See 1 more Smart Citation

Hot Deformation Behavior of a New Al–Mn–Sc Alloy

et al. 2019

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The hot deformation behavior of a new Al–Mn–Sc alloy was investigated by hot compression conducted at temperatures from 330 to 490 °C and strain rates from 0.01 to 10 s−1. The hot deformation behavior and microstructure of the alloy were significantly affected by the deformation temperatures and strain rates. The peak flow stress decreased with increasing deformation temperatures and decreasing strain rates. According to the hot deformation behavior, the constitutive equation was established to describe the steady flow stress, and a hot processing map at 0.4 strain was obtained based on the dynamic material model and the Prasad instability standard, which can be used to evaluate the hot workability of the alloy. The developed hot processing diagram showed that the instability was more likely to occur in the higher Zener–Hollomon parameter region, and the optimal processing range was determined as 420–475 °C and 0.01–0.022 s−1, in which a stable flow and a higher power dissipation were achieved.

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Section: Processing Mapmentioning

confidence: 99%

Section: Microstructure Analysismentioning

confidence: 99%

Hot Deformation Behavior of a New Al–Mn–Sc Alloy

et al. 2019

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“…Finally, through the coupling of a hotprocessing map and AEP map, an optimal processing parameter with high dissipation coefficient and low activation energy is obtained. Moreover, the microstructure of hot deformation can be controlled by the hot processing map and AEP map [9,10]. Therefore, it is very important to research the coupling relationship between the hot-processing map and AEP map microstructure.…”

Section: Introductionmentioning

confidence: 99%

Hot Deformation Characteristics and Processing Parameter Optimization of Al–6.32Zn–2.10Mg Alloy Using Constitutive Equation and Processing Map

Xiao

Wang

Huang

et al. 2021

Metals

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Hot compression tests over the temperature range from 350 °C to 500 °C and strain rates range from 0.001 s−1 to 1 s−1 for homogenized Al–6.32Zn–2.10Mg alloy were carried out on a Gleeble-3800 thermal simulation machine to characterize its hot deformation behavior. At the same time, a modified Arrhenius constitutive equation was established to describe the flow behavior of the alloy, whose average absolute error is 2.89%, which proved to have an excellent predictive effect on the flow stress of the alloy. The hot processing map of the alloy was established, and the stability processing parameters were 460–500 °C and 0.01–0.08 s−1. Then, the Z parameter processing map and activation energy processing (AEP) maps were established for further optimization. Eventually, the optimal processing parameters of the alloy was 460–500 °C (0.03–0.08 s−1). Then, the microstructure of specimens was observed using electron backscatter diffraction. Based on the findings the reasonability of the AEP map and Z parameter map was verified. Finally, electron backscatter diffraction (EBSD) techniques were used to analyze the evolution of the grain structure during the deformation process. It was found that dynamic recovery (DRV) was the main softening mechanism of Al–6.32Zn–2.10Mg. Continuous dynamic recrystallization (CDRX) and discontinuous dynamic recrystallization (DDRX) operated together with the increase of strain, but CDRX was confirmed as the dominant DRX mechanism.

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“…9 Liu et al made a hot-compression test at different temperatures and strain rates and obtained the optimum condition through a processing map. 10 Narayan et al produced aluminium composites reinforced with 4 % of TiC, WC, Fe 3 C and Mo 2 C through powder metallurgy and found a higher densification for the TiC-reinforced composite. 11 Anandakrishnan et al synthesized in-situ AA7075-TiC composites using the stir-casting technique and studied the formability behaviour of the composite.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and forming behaviour of AA7075-TiC powder-metallurgy composites

Chinnaiyan¹,

Karuppazhagi²,

Anandakrishnan³

et al. 2018

Mater. Tehnol.

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Aluminium 7075 is frequently used in aircraft structures. Aluminium metal-matrix composites with 0 % TiC (w/%), 8 % TiC and 16 % TiC were produced using the powder-metallurgy technique. Metallurgical studies, such as X-ray diffraction (XRD) and scanning electron microscopy (SEM), were made to confirm the occurrence of reinforcements. A cold-upset test was conducted on the synthesized composites and different stress parameters were calculated to study the forming behaviour of the produced composite in the tri-axial stress-state condition. The values of the stresses were found to be highest for the aluminium composite reinforced with AA7075 + 16 % TiC.

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Study on hot deformation behavior and intrinsic workability of 6063 aluminum alloys using 3D processing map

Cited by 67 publications

References 31 publications

Hot Deformation Behavior of a New Al–Mn–Sc Alloy

Hot Deformation Behavior of a New Al–Mn–Sc Alloy

Hot Deformation Characteristics and Processing Parameter Optimization of Al–6.32Zn–2.10Mg Alloy Using Constitutive Equation and Processing Map

Synthesis and forming behaviour of AA7075-TiC powder-metallurgy composites

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