Superplastic behavior in a commercial 5083 aluminum alloy

Vetrano, J. S.; Lavender, Curt A.; Hamilton, C. H.; Smith, Mark T.; Bruemmer, S.M.

doi:10.1016/0956-716x(94)90430-8

Cited by 53 publications

(23 citation statements)

References 4 publications

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“…In recent years, particular interest has been focused on alloy chemistry modifications to improve superplastic formability of aluminum sheet (Ref [16][17][18]. Minor additions of Cu, Mn, Cr and Zr to base 5083 aluminum have been shown to improve these properties ( Ref 13,17,18). The objective of the current study was to investigate and understand the effect of Cu additions on both elevated temperature formability and ambient temperature mechanical properties of AA5083 alloy.…”

Section: Introductionmentioning

confidence: 97%

“…These forming strain rates are much too slow, and further improvements are needed to increase part production rate and make the technology more cost effective. In recent years, particular interest has been focused on alloy chemistry modifications to improve superplastic formability of aluminum sheet (Ref [16][17][18]. Minor additions of Cu, Mn, Cr and Zr to base 5083 aluminum have been shown to improve these properties ( Ref 13,17,18).…”

Section: Introductionmentioning

confidence: 99%

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Superplastic Behavior of Copper-Modified 5083 Aluminum Alloy

Verma

Kim

2007

J. of Materi Eng and Perform

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An AA5083 aluminum alloy was modified with two different levels of Cu additions, cast by direct-chill method, and thermo-mechanically processed to sheet gauge. Copper additions reduced sheet grain size, decreased tensile flow stress and significantly increased tensile elongation under most elevated temperature test conditions. The high-Cu (0.8 wt.%) alloy had the finest grain size 5.3 lm, a peak strain-rate sensitivity of 0.6 at a strain-rate of 1 · 10 )2 s )1 , and tensile elongation values between 259 and 584% over the temperature range, 400-525°C, and the strain rate range, 5 · 10 )4 to 1 · 10 )2 s )1 , investigated. In biaxial pan forming tests, only the Cu-containing alloys successfully formed pans at the higher strain rate 10 )2 s )1 . The high-Cu alloy showed the least die-entry thinning. Comparison of ambient temperature mechanical properties in O-temper state showed the high-Cu alloy to have significantly higher yield strength, ultimate strength, and ductility compared to the base 5083 alloy.

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Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Superplastic Behavior of Copper-Modified 5083 Aluminum Alloy

Verma

Kim

2007

J. of Materi Eng and Perform

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“…that stabilize the wrought structure developed during hot/cold rolling and prevent recrystallization until the onset of superplastic forming [45,46]. This alloy is a medium strength alloy with mechanical properties similar to AA6061 and 2219.…”

Section: Routes Descriptionmentioning

confidence: 99%

“…process [45,46]. Although fine grain size can be achieved in Al alloy through significant thermomechanical process, it is very costly and also the low deformation strain rate results in long forming times [6,47].…”

Section: Routes Descriptionmentioning

confidence: 99%

Equal Channel Angular Extrusion Characteristics on Mechanical Behavior of Aluminum Alloy

Abioye¹,

Fayomi²,

Popoola³

et al. 2017

Aluminium Alloys - Recent Trends in Processing, Characterization, Mechanical Behavior and Applications

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Materials strengthened by conventional methods such as strain hardening, solute additions, precipitation and grain size refinement are often adopted in industrial processes. But there is limitation to the amount of deformation that these conventional methods can impact to a material. This study focused on the review of major mechanical properties of aluminum alloys in the presence of an ultrafine grain size into polycrystalline materials by subjecting the metal to an intense plastic straining through simple shear without any corresponding change in the cross-sectional dimensions of the sample. The effect of the heavy strain rate on the microstructure of aluminum alloys was in refinement of the coarse grains into ultrafine grain size by introducing a high density of dislocations and subsequently re-arranging the dislocations to form an array of grain boundaries. Hence, this investigation is aimed at gathering contributions on the influence of equal channel angular extrusion toward improving the mechanical properties of the aluminum alloys through intense plastic strain.

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“…[5][6][7] For SPF, grain-boundary-sliding (GBS) creep is widely recognized to be the dominant deformation mechanism in fine-grained AA5083 sheet. [5,[8][9][10][11][12][13] Under GBS creep, the dominant failure mechanism of AA5083 is cavitation. [6] For QPF, solutedrag (SD) creep begins to dominate deformation as temperature decreases and strain rate increases.…”

Section: Superplastic Forming (Spf) Is a Traditional Hot-mentioning

confidence: 99%

Effect of Microstructure on Cavitation during Hot Deformation of a Fine-Grained Aluminum-Magnesium Alloy as Revealed through Three-Dimensional Characterization

Chang

Taleff

Krajewski

2009

Metall Mater Trans A

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The effect of microstructure on cavitation developed during hot deformation of a fine-grained AA5083 aluminum-magnesium alloy is investigated. Two-point correlation functions and threedimensional (3-D) microstructure characterization reveal that cavitation depends strongly on the mechanism that controls plastic deformation. Grain-boundary-sliding (GBS) creep produces large, interconnected cavities rapidly during plastic straining. Solute-drag (SD) creep produces isolated cavities with less total volume fraction at a given strain. The 3-D microstructure data reveal adjacency between various microstructural features. Cavities are observed to be preferentially adjacent to large Al 6 (Mn,Fe) particles and to Mg-Si particles of all observed sizes. These data suggest that cavities preferentially nucleate at Mg-Si particles and at large Al 6 (Mn,Fe) particles. This result may be applied to reduce cavitation in commercial hot-forming operations utilizing aluminum-magnesium alloys.

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Superplastic behavior in a commercial 5083 aluminum alloy

Cited by 53 publications

References 4 publications

Superplastic Behavior of Copper-Modified 5083 Aluminum Alloy

Superplastic Behavior of Copper-Modified 5083 Aluminum Alloy

Equal Channel Angular Extrusion Characteristics on Mechanical Behavior of Aluminum Alloy

Effect of Microstructure on Cavitation during Hot Deformation of a Fine-Grained Aluminum-Magnesium Alloy as Revealed through Three-Dimensional Characterization

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