Paper Titles

Effects of Pre-Aging and Natural Aging on Bake Hardening Behavior in Al-Mg-Si Alloys
p.1026

Microstructures and Mechanical Properties of an Artificially-Aged Al-Mg-Ga Alloy
p.1032

Investigation of the Precipitation Kinetics of a New Al-Mg-Sc-Zr Alloy
p.1038

Strain Induced Rapid Precipitation in Al-Er-Zr Alloy
p.1044

A New Ultrahigh Strength Al-Cu-Li Alloy
p.1050

Influence of AlCuSc Ternary Phase on the Microstructure and Properties of 1469 Alloy
p.1057

Lifecycle Assessment and Lifecycle Costing of Aluminium Wrought-to-Wrought Recycling
p.1065

Salt Free Treatment of Aluminium Dross
p.1071

Microstructure and Mechanical Properties of Ductile Aluminium Alloy Manufactured by Recycled Materials
p.1077

HomeMaterials Science ForumMaterials Science Forum Vols. 794-796A New Ultrahigh Strength Al-Cu-Li Alloy

A New Ultrahigh Strength Al-Cu-Li Alloy

Article Preview

Abstract:

In this work, a new ultra-high strength Al-Cu-Li alloy was investigated. The ultimate strength, yield strength and elongation of the newly designed alloy by artificial aging are 647.2MPa, 609.4MPa and 7.3% respectively. Among the main strengthening phases of T₁, θ′ and S′ in the experimental alloys, T₁ is the dominant one. The combined addition of Mg and Ag promoted the precipitation of T₁ and increased the strength of the new alloy greatly. Zn had a similar effect as Ag during the aging strengthening progress, when added with Mg. Among the three micro-alloying elements, Mg, Ag and Zn, Mg had the strongest influence on age strengthening. Compared with the combined additions of (Mg +Ag) and (Mg + Zn), (Ag + Zn) had the weakest influence on aging strengthening. Pre-deformation before aging promoted the precipitation of T1 phase which weakened the influence of micro-alloying elements (Mg, Ag and Zn) on strengthening the alloys and minished the strength difference between alloy containing (Mg + Ag + Zn) and alloys containing two of them.

You might also be interested in these eBooks

Aluminium Alloys 2014 - ICAA14

Info:

Periodical:

Materials Science Forum (Volumes 794-796)

Pages:

1050-1056

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.794-796.1050

Citation:

Cite this paper

Online since:

June 2014

Authors:

Ji Fa Zhong, Zi Qiao Zheng*, Xian Fu Luo

Keywords:

Al-Cu-Li Alloy, Mechanical Characterization, Microalloying Elements, Precipitation

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

* - Corresponding Author

[1] N. JIANG, X. GAO, Z. ZHENG, T. Nonferr. Metal. Soc. 20 (2010) 740-745.

[2] M. C. Chaturvedi, D. L. Chen, Materials Science and Engineering: A (2004) 465-469.

[3] M. L. Bairwa, S. G. Desai, P. P. Date, J. Mater. Eng. Perform. 14 (2005) 623-633.

[4] D. Ortiz, J. Brown, M. Abdelshehid, P. DeLeon, R. Dalton, L. Mendez, J. Soltero, M. Pereira, M. Hahn, E. Lee, J. Ogren, R. C. Jr, J. Foyos, O. S. Es-Said, Eng. Fail. Anal. 13 (2006) 170-180.

DOI: 10.1016/j.engfailanal.2004.10.008

[5] M. Romios, R. Tiraschi, J. R. Ogren, O. S. Es-Said, C. Parrish, H. W. Babel, J. Mater. Eng. Perform. 14 (2005) 641-646.

DOI: 10.1361/105994905x64594

[6] T. S. Srivatsan, S. Anand, S. Sriram, V. K. Vasudevan, Materials Science and Engineering: A 281 (2000) 292-304.

[7] G. Itoh, Q. Cui, M. Kanno, Materials Science and Engineering: A 211 (1996) 128-137.

[8] B. P. Huang, Z. Q. Zheng, Acta Mater. 46 (1998) 4381-4393.

[9] S. Hirosawa, T. Sato, A. Kamio, Materials Science and Engineering: A 242 (1998) 195-201.

[10] M. Murayama, K. Hono, Scripta Mater. 44 (2001) 701-706.

[11] T. Honma, S. Yanagita, K. Hono, Y. Nagai, M. Hasegawa, Acta Mater. 52 (2004) 1997-(2003).

[12] M. C. Carroll, P. I. Gouma, M. J. Mills, G. S. Daehn, B. R. Dunbar, Scripta Mater. 42 (2000) 335-340.

DOI: 10.1016/s1359-6462(99)00349-8

[13] R. J. Rioja, J. Liu, Metallurgical and Materials Transactions A 43 (2012) 3325-3337.

[14] R. J. Kilmer, G. E. Stoner, Scripta Metallurgica et Materialia 25 (1991) 243-248.

DOI: 10.1016/0956-716x(91)90388-h

[15] K. Dinsdale, B. Noble, S. J. Harris, P. J. Gregson, Materials Science and Engineering: A (1988) 75-84.

[16] X. J. Jiang, Y. Y. Li, W. Deng, Q. H. Gui, L. Y. Xiong, C. X. Shi, J. Mater. Sci. Lett. 12 (1993) 1375-1377.

[17] A. K. Niessen, F. R. de Boer, R. Boom, P. F. de Châtel, W. C. M. Mattens, A. R. Miedema, Calphad 7 (1983) 51-70.

DOI: 10.1016/0364-5916(83)90030-5

[18] S. C. Wang, M. J. Starink, International Materials Reviews 50 (2005) 193-215.

[19] T. Sato, S. Hirosawa, K. Hirose, T. Maeguchi, Metallurgical and Materials Transactions A 34 (2003) 2745-2755.