An established dislocation density related, one-internal variable model was used, with some modifications, as a basis for modeling the mechanical response of aluminum alloy AA6111. In addition to conventional rolling, equal channel angular pressing (ECAP) was used to produce a wide range of grain sizes, down to the submicrometer scale. The samples were heat treated before and after both processes to optimize tensile ductility. Implementation of the model to uniaxial tensile response of the conventionally rolled and the ECAP processed materials confirmed its good predictive capability. The model was further used to formulate simple relations between true uniform strain and the constitutive parameters that allow reliable prediction of the uniform elongation.
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e-mail: kihorhee@posco.com
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July 2007
Technical Papers
Mechanical Behavior of Alloy AA6111 Processed by Severe Plastic Deformation: Modeling and Experiment
Yuri Estrin,
Yuri Estrin
ARC Centre of Excellence for Design in Light Metals, Department of Materials Engineering,
Monash University
, Clayton, VIC. 3800, Australia; CSIRO Division of Manufacturing and Materials Technology
, Clayton, VIC. 3168, Australia
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KiHo Rhee,
KiHo Rhee
Department of Materials Engineering, CAST CRC,
e-mail: kihorhee@posco.com
Monash University
, Vic. 3800, Australia
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Rimma Lapovok,
Rimma Lapovok
Department of Materials Engineering, CAST CRC,
Monash University
, Vic. 3800, Australia
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Peter F. Thomson
Peter F. Thomson
Department of Materials Engineering, CAST CRC,
Monash University
, Vic. 3800, Australia
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Yuri Estrin
ARC Centre of Excellence for Design in Light Metals, Department of Materials Engineering,
Monash University
, Clayton, VIC. 3800, Australia; CSIRO Division of Manufacturing and Materials Technology
, Clayton, VIC. 3168, Australia
KiHo Rhee
Department of Materials Engineering, CAST CRC,
Monash University
, Vic. 3800, Australiae-mail: kihorhee@posco.com
Rimma Lapovok
Department of Materials Engineering, CAST CRC,
Monash University
, Vic. 3800, Australia
Peter F. Thomson
Department of Materials Engineering, CAST CRC,
Monash University
, Vic. 3800, AustraliaJ. Eng. Mater. Technol. Jul 2007, 129(3): 380-389 (10 pages)
Published Online: February 15, 2007
Article history
Received:
January 30, 2006
Revised:
February 15, 2007
Citation
Estrin, Y., Rhee, K., Lapovok, R., and Thomson, P. F. (February 15, 2007). "Mechanical Behavior of Alloy AA6111 Processed by Severe Plastic Deformation: Modeling and Experiment." ASME. J. Eng. Mater. Technol. July 2007; 129(3): 380–389. https://doi.org/10.1115/1.2744396
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