Nano Archive

Enhanced tensile ductility of an ultra-fine-grained aluminum alloy

Sabirov, I. and Estrin, Y. and Barnett, M. R. and Timokhina, I. and Hodgson, P. D. (2008) Enhanced tensile ductility of an ultra-fine-grained aluminum alloy. SCRIPTA MATERIALIA, 58 (3). pp. 163-166.

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Aluminum alloy 6082 was subjected to equal-channel angular pressing (ECAP), which resulted in an ultra-fine-grained (UFG) microstructure with an average grain size of 0.2-0.4 mu m. There was a pronounced effect of the grain refinement on the strain-rate sensitivity and tensile ductility. The Hart criterion of tensile necking fails to explain the observed ductility of the UFG material at low strain rates. A correlation between the observed stronger-than-expected ductility and a tendency to microshear band formation at low strain rates was established.

Item Type:Article
Uncontrolled Keywords:aluminum alloy; equal-channel angular pressing (ECAP); shear bands; uniform elongation; strain-rate sensitivity
Subjects:Engineering > Nanotechnology applications in mechanical engineering
Engineering > Nanotechnology applications in civil engineering
Material Science > Nanofabrication processes and tools
ID Code:5890
Deposited By:IoN
Deposited On:17 Dec 2009 15:07
Last Modified:17 Dec 2009 15:07

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