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Damage prediction of 7025 aluminum alloy during equal-channel angular pressing

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dc.contributor.author Ebrahimi, M.
dc.contributor.author Attarilar, S.
dc.contributor.author Gode, C.
dc.contributor.author Djavanroodi, F.
dc.date.accessioned 2019-08-16T12:32:10Z
dc.date.available 2019-08-16T12:32:10Z
dc.date.issued 2014
dc.identifier.issn 16744799 (ISSN)
dc.identifier.uri http://acikerisim.pau.edu.tr:8080/xmlui/handle/11499/7795
dc.description.abstract Equal-channel angular pressing (ECAP) is a prominent technique that imposes severe plastic deformation into materials to enhance their mechanical properties. In this research, experimental and numerical approaches were utilized to investigate the mechanical properties, strain behavior, and damage prediction of ECAPed 7025 aluminum alloy in various conditions, such as die channel angle, outer corner angle, and friction coefficient. Experimental results indicate that, after the first pass, the yield strength, ultimate tensile strength, and hardness magnitude are improved by approximately 95%, 28%, and 48.5%, respectively, compared with the annealed state, mainly due to grain refinement during the deformation. Finite element analysis shows that the influence of die channel angle is more important than that of outer corner angle or friction coefficient on both the strain behavior and the damage prediction. Also, surface cracks are the main cause of damage during the ECAP process for every die channel angle except for 90°; however, the cracks initiated from the neighborhood of the central regions are the possible cause of damage in the ECAPed sample with the die channel angle of 90°. © 2014, University of Science and Technology Beijing and Springer-Verlag Berlin Heidelberg.
dc.language.iso English
dc.publisher University of Science and Technology Beijing
dc.relation.isversionof 10.1007/s12613-014-1000-z
dc.subject aluminum alloys
dc.subject equal-channel angular pressing
dc.subject materials damage
dc.subject mechanical properties
dc.subject strain distribution
dc.subject Aluminum
dc.subject Aluminum alloys
dc.subject Angular distribution
dc.subject Cracks
dc.subject Dies
dc.subject Finite element method
dc.subject Forecasting
dc.subject Friction
dc.subject Grain refinement
dc.subject Grain size and shape
dc.subject Mechanical properties
dc.subject Pressing (forming)
dc.subject Strain
dc.subject Surface defects
dc.subject Tensile strength
dc.subject Damage prediction
dc.subject Friction coefficients
dc.subject Materials damage
dc.subject Numerical approaches
dc.subject Outer corner angle
dc.subject Severe plastic deformations
dc.subject Strain distributions
dc.subject Ultimate tensile strength
dc.subject Equal channel angular pressing
dc.title Damage prediction of 7025 aluminum alloy during equal-channel angular pressing
dc.type Article
dc.relation.journal International Journal of Minerals, Metallurgy and Materials
dc.identifier.volume 21
dc.identifier.issue 10
dc.identifier.startpage 990
dc.identifier.endpage 998
dc.identifier.index Scopus

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