Effect of Cold Deformation on Precipitation of 7050 Aluminum Alloy during Aging Process

Article Preview

Abstract:

Strengthening of aluminum alloy has always been an interesting research topic. There might be interactions between different strengthening mechanisms. In this paper, the effect of large cold deformation on the precipitation of as-quenched 7050 aluminum alloy was studied. Differential scanning calorimetry was used as the main research technique, accompanied by tensile test and transmission electron microscopy. It was found that clusters and precipitation had formed in the cold deformation, and dislocations accelerated the precipitation dynamics.

You might also be interested in these eBooks

Info:

Periodical:

Advanced Materials Research (Volumes 1120-1121)

Pages:

1014-1018

Citation:

Online since:

July 2015

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2015 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] G. Sha, Y. B. Wang, X. Z. Liao, Z. C. Duan, S. P. Ringer, T. G. Langdon, Influence of equal-channel angular pressing on precipitation in an Al–Zn–Mg–Cu alloy, Acta Mater, 57(2009) 3123-3132.

DOI: 10.1016/j.actamat.2009.03.017

Google Scholar

[2] M. Starink, S. Wang, A model for the yield strength of overaged Al–Zn–Mg–Cu alloys, Acta Mater, 51(2003) 5131-5150.

DOI: 10.1016/s1359-6454(03)00363-x

Google Scholar

[3] L. Lu, Y. Shen, X. Chen, L. Qian, K. Lu, Ultrahigh strength and high electrical conductivity in copper, Science, 304(2004) 422-426.

DOI: 10.1126/science.1092905

Google Scholar

[4] J. Kim, H. Jeong, S. Hong, Y. Kim, W. Kim, Effect of aging treatment on heavily deformed microstructure of a 6061 aluminum alloy after equal channel angular pressing, Scripta Mater, 45(2001) 901-907.

DOI: 10.1016/s1359-6462(01)01109-5

Google Scholar

[5] J. Buha, R. Lumley, A. Crosky, Secondary ageing in an aluminium alloy 7050, Mater Sci Eng A, 492(2008) 1-10.

DOI: 10.1016/j.msea.2008.02.039

Google Scholar

[6] Q. Liu, X. Huang, D. J. Lloyd, N. Hansen, Microstructure and strength of commercial purity aluminium (AA 1200) cold-rolled to large strains, Acta Mater, 50(2002) 3789-3802.

DOI: 10.1016/s1359-6454(02)00174-x

Google Scholar

[7] Y. Saito, H. Utsunomiya, N. Tsuji, T. Sakai, Novel ultra-high straining process for bulk materials-development of the accumulative roll-bonding (ARB) process, Acta Mater, 47(1999) 579-583.

DOI: 10.1016/s1359-6454(98)00365-6

Google Scholar

[8] R. A. Masumura, P. M. Hazzledine, C. S. Pande, Yield stress of fine grained materials, Acta Mater, 46(1998) 4527-4534.

DOI: 10.1016/s1359-6454(98)00150-5

Google Scholar

[9] M. Cabibbo, Microstructure strengthening mechanisms in different equal channel angular pressed aluminum alloys, Mater Sci Eng A, 560(2013) 413-432.

DOI: 10.1016/j.msea.2012.09.086

Google Scholar