Processing ultrafine-grained Aluminum alloy using Multi-ECAP-Conform technique

Fakhretdinova, Elvira I.; Рааб, Г. И.; Ryzhikov, O. L.; Valiev, Ruslan Z.

doi:10.1088/1757-899x/63/1/012037

Cited by 8 publications

(7 citation statements)

References 6 publications

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“…Such an interrelation between а parameter and electrical conductivity has already been established in the studies [19,[21][22][23]. At present, SPD techniques aimed at processing of commercially applicable UFG metals and alloys with enhanced mechanical and functional characteristics are actively developed [26,53]. The given research demonstrates the possibility to process the specified UFG structure having a unique combination of mechanical strength and electrical conductivity in rods made of Al 6101 alloy using the ECAP-C technique with further artificial aging.…”

Section: Properties and Microstructure Of The Ufg Alloy Processed Viamentioning

confidence: 80%

Enhanced Mechanical Properties and Electrical Conductivity in Ultrafine-Grained Al 6101 Alloy Processed via ECAP-Conform

Murashkin

Medvedev

Kazykhanov

et al. 2015

Metals

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This paper studies the effect of equal channel angular pressing-Conform (ECAP-C) and further artificial aging (AA) on microstructure, mechanical, and electrical properties of Al 6101 alloy. As is shown, ECAP-C at 130 °C with six cycles resulted in the formation of an ultrafine-grained (UFG) structure with a grain size of 400-600 nm containing nanoscale spherical metastable β′ and stable β second-phase precipitates. As a result, processed wire rods demonstrated the ultimate tensile strength (UTS) of 308 MPa and electrical conductivity of 53.1% IACS. Electrical conductivity can be increased without any notable degradation in mechanical strength of the UFG alloy by further AA at 170 °C and considerably enhanced by additional decomposition of solid solution accompanied by the formation of rod-shaped metastable β′ precipitates mainly in the ultrafine grain interior and by the decrease of the alloying element content in the Al matrix. It is demonstrated that ECAP-C can be used to process Al-Mg-Si wire rods with the specified UFG microstructure. The mechanical strength and electrical conductivity in this case are shown to be much higher than those in the industrial semi-finished products made of similar material processed by the conventional T6 or T81 treatment. OPEN ACCESSMetals 2015, 5 2149

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Section: Properties and Microstructure Of The Ufg Alloy Processed Viamentioning

confidence: 80%

Enhanced Mechanical Properties and Electrical Conductivity in Ultrafine-Grained Al 6101 Alloy Processed via ECAP-Conform

Murashkin

Medvedev

Kazykhanov

et al. 2015

Metals

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“…Modeling of the metal flow (Figure1b) within the proposed technique was performed using the DEFORM‐3D software which implements the finite‐element method, similarly to the investigations, the results of which are presented in the works . DEFORM is a software for finite‐element modeling, intended for the analysis of three‐dimensional metal flow during various processes of metal forming.…”

Section: Modeling Of the Process By The Finite‐element Methodsmentioning

confidence: 99%

“…The technique of Multi‐ECAP‐Conform can be conventionally divided into a successive implementation of the schemes of ECAP‐Conform and ECAP with parallel channels . During the processing, a considerable strain intensity e i ≥ 3 is ensured in a metal, promoting the UFG structure formation in the produced billets …”

Section: Principle Of Multi‐ecap‐conform Processingmentioning

confidence: 99%

Modeling of Metal Flow during Processing by Multi‐ECAP‐Conform

2015

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This article presents the results of a computer modeling study of a new technique of severe plastic deformation called Multi-ECAP-Conform, ensuring a high level of strain value e i ! 3 per one processing pass of a billet from an Al alloy. The main feature of this technique is multi-stage successive shear straining of a long-length billet under the conditions of equal-channel angular pressing (ECAP) via the Conform mode. The main area of investigation is the study of the effect of the geometry of channels and channels intersection angles on the homogeneity of the strained state, all other conditions being equal. A rational combination of the channels geometry has been established that provides for a homogeneous strained state of billets and allowable force conditions of processing.

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“…The performance and applications of nanostructured materials produced by severe plastic deformation is presented in [7]. Research areas of the SPD processes as ECAP and the DRECE method are intensively developed [8,9]. The effectiveness of this method is evaluated by the use of different simulations [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Effect of severe plastic deformation on mechanical and fatigue behaviour of medium-c sheet steel

Rusz

Hilšer

Ochodek

et al. 2020

J min metall B Metall

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The DRECE method belongs to the severe plastic deformation (SPD) processes used for the refinement of sheet metal elements. A forming device used in this method is currently being installed in the workplace in the Centre of Advanced Innovation Technologies, VSB Technical University of Ostrava. In the present work the structural characteristics and fracture morphology of Ck55 carbon steel after the application of the DRECE method with a forming tool angle of 118? are presented. The microstructure results are linked to selected mechanical properties. The tensile, hardness, and fatigue tests are performed. The methodology of non-destructive residual stresses measurement in the carbon steel after the extrusion and application of tensile tests on small samples are important for their use in technical practice. The paper presents the original results of selected properties after the application of the DRECE method on Ck55 steel, which will be used in the future to assess the application of the DRECE method and to determine other directions of the processing of ferrous alloys and steels.

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Processing ultrafine-grained Aluminum alloy using Multi-ECAP-Conform technique

Cited by 8 publications

References 6 publications

Enhanced Mechanical Properties and Electrical Conductivity in Ultrafine-Grained Al 6101 Alloy Processed via ECAP-Conform

Enhanced Mechanical Properties and Electrical Conductivity in Ultrafine-Grained Al 6101 Alloy Processed via ECAP-Conform

Modeling of Metal Flow during Processing by Multi‐ECAP‐Conform

Effect of severe plastic deformation on mechanical and fatigue behaviour of medium-c sheet steel

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