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Softening Phenomenon during Compression Test in Nanograined Aluminum Alloys

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Abstract:

Al-Mg and Al-Mg-Cu alloys are known well to reveal superplasticity in tension at high temperatures. In this study, deformation behaviors of those alloys nanograined were investigated under compression test at room temperature. During plastic deformation softening phenomena occurred obviously in nanograined Al-1.5wt%Mg and Al-0.7wt%Mg-1.0wt%Cu alloys while slight strain hardening appeared in nanograined pure Al. These results suggest that the softening strongly depends on composition of alloys. The softening takes place over strain rate range from 10-4 up to 10-1.

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Info:

Periodical:

Materials Science Forum (Volumes 475-479)

Pages:

3489-3492

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.475-479.3489

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Cite this paper

Online since:

January 2005

Authors:

Se Hyun Ko, Jin Man Jang, Won Sik Lee

Keywords:

Aluminium Alloy, Compression Test, Mechanical Alloying (MA), Nanograined Materials, Softening

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© 2005 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] Q. Wei, L. Kecskes, T. Jiao, K.T. Hartwig, K.T. Ramesh and E. Ma: Acta Mater., 52 (2004) p.1859.

Google Scholar

[2] J.C. Lee, J.Y. Suh and J.H. Ahn: Metall. Mater. Trans. A, 34 (2003) p.625.

Google Scholar

[3] A.L. Ortiz and L. Shaw: Acta Mater. (2004) in press.

Google Scholar

[4] C.C. Koch: Nanostruct. Mater., 2 (1993) p.109.

Google Scholar

[5] X. K Son, H.T. Cong, M. Sun and M.C. Yang: Nanostruct. Mater., 7 (1999) p.917.

Google Scholar

[6] D. Jia, K.T. Ramesh and E. Ma: Acta Mater., 51 (2003) p.3495.

Google Scholar

[7] S. Hwang and P.G. McCormick: Met. Mater. -Int., 4 (1998) p.543.

Google Scholar

[8] Z. Gronostajski, J. Mater. Process. Technol., 106 (2000) p.243.

Google Scholar

[9] M.Y. Gutkin, J.A. Ovid'ko and N.V. Skiba: Acta Mater., 52 (2004) p.1711.

Google Scholar

[10] H. Conrad and J. Narayan, Scripta Metall. Mater., 42 (2000) p.1025.

Google Scholar

[11] O.A. Kaibyshev: Superplasticity of alloys, intermetallics and ceramics (Springer-Verlag, Germany 1992).

Google Scholar