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Enhancement of Mechanical and Electrical Properties in Al 6101 Alloy by Severe Shear Strain under Hydrostatic Pressure

Version 2 2024-06-04, 05:25
Version 1 2018-10-05, 13:39
journal contribution
posted on 2024-06-04, 05:25 authored by A Medvedev, MY Murashkin, V Kazykhanov, RZ Valiev, AE Medvedev, Peter HodgsonPeter Hodgson, Rimma LapovokRimma Lapovok
Samples of commercially received aluminum AA6101 alloy are homogenized, quenched, and subjected to 2, 4, and 8 passes of Equal Channel Angular Pressing (ECAP) with 200 MPa of applied backpressure. Tensile strength of the alloy's samples increases with the accumulated strain to the double value of 400 MPa after 8 ECAP passes, while electrical conductivity slightly decreases from 51.3 to 48.2%IACS. Aging at 130 °C for 72 h is used to restore conductivity with very small loss of strength. Moreover, the increase in conductivity is directly proportional to the number of ECAP passes and conductivity exceeds those values measured for the as-received and solution treated states. Strong inhomogeneity of the microstructure and formation of a network of differently oriented shear bands during severe plastic deformation is observed, which is beneficial for simultaneous enhancement of mechanical and electrical properties.

History

Journal

Advanced Engineering Materials

Volume

20

Article number

ARTN 1800695

Pagination

1 - 7

Location

Chichester, Eng.

ISSN

1438-1656

eISSN

1527-2648

Language

English

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2018, WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Issue

11

Publisher

WILEY-V C H VERLAG GMBH