Influence of predeformation on microstructure evolution of superplastically formed Al 5083 alloy

Chentouf, S.M.; Belhadj, T.; Bombardier, Nicolas; Brodusch, Nicolas; Gauvin, Raynald; Jahazi, Mohammad

doi:10.1007/s00170-016-9006-5

Cited by 8 publications

(4 citation statements)

References 20 publications

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“…Loucif et al attained maximum elongation up to 400% at 350 • C and 10 −1 s −2 while Caballero et al obtained a maximum elongation of 126% at the same temperature and strain rate. In another experiment, Chentouf et al [93] analyzed the superplastic behavior of AA5083 by hot and cold preform, whose average grain size was determined to be 8.32 and 7.95 µm respectively. They concluded that the number of cavities in the hot preform case were less than in the cold preform case and hot preformed samples led to an increase in the nucleation of subsurface discontinuities.…”

Section: Effect Of Microstructure Refinement Techniques On the Superpmentioning

confidence: 99%

Recent Development of Superplasticity in Aluminum Alloys: A Review

Bhatta

Pesin

Zhilyaev

et al. 2020

Metals

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Aluminum alloys can be used in the fabrication of intricate geometry and curved parts for a wide range of uses in aerospace and automotive sectors, where high stiffness and low weight are necessitated. This paper outlines a review of various research investigations on the superplastic behavior of aluminum alloys that have taken place mainly over the past two decades. The influencing factors on aluminum alloys superplasticity, such as initial grain size, deformation temperature, strain rate, microstructure refinement techniques, and addition of trace elements in aluminum alloys, are analyzed here. Since grain boundary sliding is one of the dominant features of aluminum alloys superplasticity, its deformation mechanism and the corresponding value of activation energy are included as a part of discussion. Dislocation motion, diffusion in grains, and near-grain boundary regions being major features of superplasticity, are discussed as important issues. Moreover, the paper also discusses the corresponding values of grain size exponent, stress exponent, solute drag creep and power law creep. Constitutive equations, which are essential for commercial applications and play a vital role in predicting and analyzing the superplastic behavior, are also reviewed here.

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Section: Effect Of Microstructure Refinement Techniques On the Superpmentioning

confidence: 99%

Recent Development of Superplasticity in Aluminum Alloys: A Review

Bhatta

Pesin

Zhilyaev

et al. 2020

Metals

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show abstract

“…It is well known that recrystallized grains are formed at specific nucleation sites such as initial grain boundaries, cube bands, transition bands, shear bands and deformation zones around preexisting second phase particles [12]. In this study, the grains refined from 31.8μm to 9.4μm, due to the large deformation of the cold deformation, leading to dislocation congestion and its density increased, offered more nucleation sites and higher stored energy [9,13]. Tensile Properties.…”

Section: Resultsmentioning

confidence: 85%

Effect of Cold Deformation and Annealing on Microstructure and Mechanical Properties of 5083 Aluminum Alloy Sheets

Gao

Huang

et al. 2018

MSF

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5083 aluminum alloy, due to moderate strength, good thermal conductivity and formability, is an ideal structural material for car production. Influence of cold rolling process on microstructures and mechanical properties of 5083 aluminum alloys is significant and research hotspots. In this paper, cold deformation and annealing processes on grains, tensile properties and anisotropies of 5083 alloy sheets were studied. Results showed that incomplete recrystallization occured on 5083 alloy sheets when annealing temperature was at 300°C. The degree of recrystallization increased slightly with the cold deformation raised from 30% to 50% and varied slightly with prolonged annealing time from 2h to 4h. Furthermore, fully recrystallization occurred on 5083 alloy sheets at the annealing temperature above 320°C. Tensile strength of 5083 alloy sheets reduced significantly when the annealing temperature was raised from 300°C to 320°C, while it varied slightly when the annealing temperature continued to rise to 380°C.

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“…The rapid superplastic forming process is divided into four steps: Alloy heating, pre-forming, blow forming, and heat treatment. The process of the whole production is shown in Figure 2 [ 12 , 13 ].…”

Section: Aluminum Alloy Rail Vehicle Side Window Forming Designmentioning

confidence: 99%

Theoretical Investigation of Forming Process of Aluminum Alloy Rail Vehicle Side Window

Chen

et al. 2022

Materials

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With the vigorous development of rail transit trains around the world and the emergence of global environmental pollution and energy shortages, the world has an urgent need for manufacturing technology for lightweight aluminum alloy rail transit train components. This paper mainly studied the superplastic forming law of 5083Al for rail transit. Through the high-temperature tensile test and blowing forming experiments, the superplastic properties of 5083Al were determined. Based on this, the die design, finite element simulation, and forming experiment of the rail vehicle side window were carried out. In order to study the superplastic deformation behavior of industrial 5083Al under complex stress conditions, the influence of the depth, area ratio, and friction coefficient of the pre-forming die on the part thickness distribution is simulated. The side window is made of a high-strength 5083Al sheet in the form of bending at both ends to ensure the strength of the connection between the overall side window and the side wall skeleton. The variation law of the side wall forming height of 5083Al box-shaped parts was studied. The efficient manufacture of parts that meet quality standards was made possible by the optimization of the pressure profile. The microstructure changes of the material after superplastic forming were studied by Energy Dispersive Spectrometer (EDS) and Electron Backscattered Diffraction (EBSD).

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Influence of predeformation on microstructure evolution of superplastically formed Al 5083 alloy

Cited by 8 publications

References 20 publications

Recent Development of Superplasticity in Aluminum Alloys: A Review

Recent Development of Superplasticity in Aluminum Alloys: A Review

Effect of Cold Deformation and Annealing on Microstructure and Mechanical Properties of 5083 Aluminum Alloy Sheets

Theoretical Investigation of Forming Process of Aluminum Alloy Rail Vehicle Side Window

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