Strength of Commercial Aluminum Alloys after Equal Channel Angular Pressing and Post-ECAP Processing

Abstract:

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The effects of equal channel angular pressing (ECAP), further heat treatment and rolling on the structure and room temperature mechanical properties of the commercial aluminum alloys 6061 (Al-0.9Mg-0.7Si) and 1560 (Al-6.5Mg-0.6Mn) were investigated. It has been shown that the strength of the alloys after ECAP is higher than that achieved after conventional processing. Prior ECAP solution treatment and post-ECAP ageing can additionally increase the strength of the 6061 alloy. Under optimal ageing conditions a yield strength (YS) of 434 MPa and am ultimate tensile strength (UTS) of 470 MPa were obtained for the alloy. Additional cold rolling leads to a YS and UTS of 475 and 500 MPa with 8% elongation. It was found that the post-ECAP isothermal rolling of the 1560 alloy resulted in the formation of a nano-fibred structure and a tensile strength (YS = 540 MPa and UTS = 635 MPa) that has never previously been observed in commercial non-heat treatable alloys.

Info:

Periodical:

Solid State Phenomena (Volume 114)

Edited by:

Witold Lojkowski and John R. Blizzard

Pages:

91-96

DOI:

10.4028/www.scientific.net/SSP.114.91

Citation:

M. Y. Murashkin et al., "Strength of Commercial Aluminum Alloys after Equal Channel Angular Pressing and Post-ECAP Processing", Solid State Phenomena, Vol. 114, pp. 91-96, 2006

Online since:

July 2006

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$35.00

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