Fine-Grained Structure and Superplasticity of Al – Cu – Mg – Fe - Ni Alloys

Anton D. Kotov; Anastasia V. Mikhaylovskaya; Igor S. Golovin; Vladimir K. Portnoy

doi:10.4028/www.scientific.net/MSF.735.55

Paper Titles

Slip Induced Strain Rate Sensitivity for Superplastic Material?
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Characteristics of the GBS – SDC Transition during Bi-Axial Forming of AA5083
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Estimation of Input to Plastic Deformation of Non-Crystallographic Intergranular Slip
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Fine-Grained Structure and Superplasticity of Al – Cu – Mg – Fe - Ni Alloys
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4D Damage Characterization during Superplastic Deformation of Magnesium Alloys
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Evaluation of Plastic Workability Limit of Magnesium Alloy by Cavitations in High Temperature Uni and Biaxial Test
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Effect of Porosity on Tensile and Compressive Deformations of Superplastic Zn-22Al Alloy Foam
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Two-Dimensional Observation of Grain Movements in Elongated and Aligned Grain Structure during High Temperature Deformation
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HomeMaterials Science ForumMaterials Science Forum Vol. 735Fine-Grained Structure and Superplasticity of Al –...

Fine-Grained Structure and Superplasticity of Al – Cu – Mg – Fe - Ni Alloys

Abstract:

The microstructure of Al – Cu – Mg – Fe – Ni alloys with Mn and Zr additions was analyzed by optical and scanning electron microscopy, internal friction, X-ray and calorimetric analysis in order to optimize technology of superplastic alloy preparation. It is shown that the S (Al₂CuMg) phase precipitates during hot rolling and dissolves during annealing. This allows to create fine-grained recrystallized structure and to achieve elongation of 320 % at the strain rate of 1×10^-3 s^-1 during superplasticity testing. It is shown that annealing in saltpeter before superplastic deformation improves the superplastic behavior: at the constant strain rate of 4×10^-3 s^-1 elongation is 500 %.

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Periodical:

Materials Science Forum (Volume 735)

Pages:

55-60

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.735.55

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Online since:

December 2012

Authors:

Anton D. Kotov, Anastasia V. Mikhaylovskaya, Igor S. Golovin, Vladimir K. Portnoy

Keywords:

Aluminium Alloy, Fine-Grained Structure, Recrystallisation Annealing, Superplasticity

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