Mechanical Behavior of Ultrafine-Grained Cryomilled Al 5083 at Elevated Temperature

The mechanical behavior of cryomilled and consolidated Al 5083 with a duplex ultrafine-grained microstructure is described for compression testing at different temperatures and strain rates. The relationship among flow stress, strain rate, and testing temperature provides an initial hotworking guide...

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Veröffentlicht in:Journal of materials engineering and performance 2005-08, Vol.14 (4), p.519-527
Hauptverfasser: Witkin, David, Han, Bing Q, Lavernia, Enrique J
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Han, Bing Q
Lavernia, Enrique J
description The mechanical behavior of cryomilled and consolidated Al 5083 with a duplex ultrafine-grained microstructure is described for compression testing at different temperatures and strain rates. The relationship among flow stress, strain rate, and testing temperature provides an initial hotworking guide for finegrained cryomilled aluminum alloys. The ultrafine-grained material exhibits similar deformation characteristics, such as strain-rate sensitivity, which would be expected in a conventional aluminum alloy. These findings are discussed in the context of recent empirical and theoretical models for the deformation of materials with grain sizes between 100 and 1000 nm.
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subjects Alloys
Aluminum
Aluminum base alloys
Deformation
Grain size
Materials engineering
Strain rate
Yield strength
title Mechanical Behavior of Ultrafine-Grained Cryomilled Al 5083 at Elevated Temperature
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