The effects of the .BETA.-phase and rolled material's microstructure on the mechanical properties of 5083 aluminum alloy.

Jin, Dazhou; Nakayama, Yoshihiro; Takaai, Tetsuya; Onoda, Yoshitomi

doi:10.2464/jilm.46.237

Cited by 3 publications

(3 citation statements)

References 15 publications

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“…As to the vibration fracture resistance, the crack propagation behavior will be influenced by microstructural variation as the Mg content increases due to the presence of phase. 19) This can be correlated with the occurrence of intergranular crack path shown in Fig. 13(b).…”

Section: Discussionmentioning

confidence: 61%

Effect of Mg Content on Vibration Fracture Resistance of Friction Stirred Al–Mg Alloys

Huang

Lui

Chen

2005

MATERIALS TRANSACTIONS

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In this study, the effect of Mg content on friction stirred Al-Mg alloy is discussed, and the experimental results indicate that grains of parent plate which are refined through FSP (friction stir processing) are effective in enhancing tensile properties of materials through FSP and improving the vibration fracture resistance of friction stirred specimens. It should be noted that the deterioration of vibration fracture resistance can be recognized as Mg content increases, the grain size actually has been refined by FSP. From crack propagation result, an intergranular crack propagation feature can be recognized in the specimen with higher Mg content, and it is reasonable to suggest that the precipitation of phase plays an important role in the deterioration of vibration fracture resistance. However, all cross-sectioned microstructures at stir zone show that distinct finer grains which can be acquired by dynamic recrystallization during FSP. That meaningful improvement of uniform elongation on friction stirred specimens can be recognized is not only resulted from controlling the grain size factor, but also microstructural characteristics factor which are resulted from high temperature shear deformation.

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Section: Discussionmentioning

confidence: 61%

Effect of Mg Content on Vibration Fracture Resistance of Friction Stirred Al–Mg Alloys

Huang

Lui

Chen

2005

MATERIALS TRANSACTIONS

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“…Other workers determined the lattice parameters by XRD. [23][24][25][26][27] By monitoring the changes in the matrix lattice parameter, Rajan [23] deduced that the clusters that first formed at room temperature in a solutionized Al-Cu-Mg alloy were enriched mainly with Mg, because of an increased mobility of Mg over that of Cu, due to the preferential binding of quenched-in vacancies to Mg atoms. Passoja et al [25] showed that the lattice parameters of the metastable and equilibrium precipitates in Al-Ag-Zn alloys depended on the alloy composition and varied with the heat treatment procedure as well.…”

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confidence: 99%

“…The precipitation sequence in aluminum alloys has been investigated using various methods that include dilatometry, [22] X-ray diffraction (XRD), [23][24][25][26][27] electrical resistivity measurements, [27,28] differential scanning calorimetry (DSC), [9,[29][30][31] transmission electron microscopy (TEM), [6,9,10,17,32,33] and atom probe field ion microscopy (APFIM). [34][35][36][37] Hunsicker, [22] in an attempt to determine the precipitation sequence during the aging of Al-Cu-Mg alloys from dilatometric measurements, assumed that the lattice parameter of the aluminum matrix was linearly related to solute concentrations and that the compositions of the precipitating phases did not change with time.…”

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confidence: 99%

Precipitation Behavior of AA2618

Lü

Kadolkar

Nakazawa

et al. 2007

Metall Mater Trans A

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The precipitation behavior of AA2618 was studied by a multitude of characterization techniques: microhardness testing, lattice parameter measurement through X-ray diffraction (XRD), differential scanning calorimetry (DSC), transmission electron microscopy (TEM), and atom probe field ion microscopy (APFIM). The matrix lattice parameter increased during the first 20 hours of natural aging, due to the formation of Cu clusters and decreased over the next 24 hours, due to the formation of Mg-rich clusters. Prior natural aging weakened subsequent artificial aging hardening at 180°C, 200°C, and 230°C, due to the cluster reversion that delayed the precipitation of strengthening phases. The matrix lattice parameter exhibited erratic changes during artificial aging that corresponded to the formation and partial dissolution of Guinier-Preston-Bagaryatsky (GPB) zones, the transformation of GPB zones to GPB2 zones, and the precipitation of S¢. The structural changes during the artificial aging of AA2618 occur in this sequence: supersaturated solid solution fi clusters + GPB fi GPB + GPB2 fi GPB2 + S¢ fi S¢+ S fi S.

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Effect of solution treatment temperature on precipitation behavior in Al-7%Mg alloy improved by chromium or manganese addition.

昌伸¹,

栄浩²

2001

J. Japan Inst. Light Metals

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The effects of the .BETA.-phase and rolled material's microstructure on the mechanical properties of 5083 aluminum alloy.

Cited by 3 publications

References 15 publications

Effect of Mg Content on Vibration Fracture Resistance of Friction Stirred Al–Mg Alloys

Effect of Mg Content on Vibration Fracture Resistance of Friction Stirred Al–Mg Alloys

Precipitation Behavior of AA2618

Effect of solution treatment temperature on precipitation behavior in Al-7%Mg alloy improved by chromium or manganese addition.

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