The Bauschinger Effect in AA 6111

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Abstract:

In this paper, tension compression tests are carried out on AA6111 specimens in order to characterize the internal stress. The impact of the microstructure is investigated by applying a variety of ageing conditions to the specimens prior testing. It is shown that the Bauschinger effect depends strongly on the precipitation state. More precisely, when the precipitates are still shearable by the dislocations, no significant internal stress is found, although when the precipitates are large enough, a large internal stress, up to 30% of the yield stress, is observed.

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Periodical:

Materials Science Forum (Volumes 519-521)

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913-918

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Online since:

July 2006

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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[1] J. Bauschinger. Ueber die veranderung der elasticitatagrenze und dea elasticitatamoduls verschiadener metalle. Zivilingenieur, 27: 289-348, 1881.

Google Scholar

[2] W.M. Stobbs L.M. Brown. The work-hardening of copper-silica. i. a model based on internal stresses, with no plastic relaxation. Phil Mag., 23(185): 1185-1199, (1971).

DOI: 10.1080/14786437108217405

Google Scholar

[3] W.M. Stobbs L.M. Brown. The work-hardening of copper-silica. ii. the role of plastic relaxation. Phil Mag., 23(185): 1201-1233, (1971).

DOI: 10.1080/14786437108217406

Google Scholar

[4] G. D. Moan and J. D. Embury. A study of the bauschinger effect in aluminum-copper alloys. Acta Metallurgica, 27(5): 903-914, May (1979).

DOI: 10.1016/0001-6160(79)90125-1

Google Scholar

[5] W. J. Poole, X. Wang, D. J. Lloyd, and J. D. Embury. The shearable/non-shearable transition in Al-Mg-Si-Cu precipitation hardening alloys: Implications on the distribution of slip, work hardening and fracture. Phil Mag., 85(26-27): 3113-3135, September (2005).

DOI: 10.1080/14786430500154935

Google Scholar