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First Principles Calculations for Alloy Design of Moderate Temperature Age-Hardenable Al Alloys

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Abstract:

For aerospace structural applications of age-hardenable aluminum at temperatures above 100°C, a primary alloy-design criterion is creep resistance which depends on the strengthening effect and thermal stability of the second phases.. First principle calculations can be used to study fundamental properties of these phases and, therefore, help to identify the desired ones and their precipitate structures. In order to produce the desired phases, which are usually thermodynamically metastable, and to suppress the undesired phases, computational analysis (combining first principle calculations, cluster variation methods and CALPHAD) can assist in identifying beneficial trace additions and deleterious impurities that must be eliminated. This paper, using Al-Cu-Mg as an example, illustrates this approach, which if successful, should shorten the normal alloy development period.

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Periodical:

Materials Science Forum (Volumes 519-521)

Pages:

35-44

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.519-521.35

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Online since:

July 2006

Authors:

Ai Wu Zhu, Gary J. Shiflet, E.A. Jr. Starke

Keywords:

Alloy Design, Clustering Analysis (CA), Creep Resistance, First-Principle Calculations

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] A. Zhu, GJ Shiflet and EA Starke Jr, to be published in Applied Computational Materials Modeling: Theory, Simulation and Experiment", Springer, (2006).

Google Scholar

[2] J.H. Auld, Acta Cryst., A28, S98, Suppl. (1972).

Google Scholar

[3] S. Kerry and V.D. Scott, Metals Sci., 18, 289 (1984).

Google Scholar

[4] K.M. Knowles and W.M. Stobbs, Acta Cryst., B44, 207 (1988).

Google Scholar

[5] C. Muddle and I.J. Polmear, Acta Metall., 37, 777 (1989).

Google Scholar

[6] A. Garg and J.M. Howe, Acta Metall., 39, 1939 (1991).

Google Scholar

[7] A. Zhu, B.M. Gable, G.J. Shiflet & E.A. Starke, Adv. Mater. Eng., 4, 839 (2003).

Google Scholar

[8] A. Zhu A Csontos and EA Starke Jr, Acta mater. 1999, 47, 1713.

Google Scholar

[9] I.J. Polmear and M.J. Couper, Metall Trans. 19 A, 1027(1988).

Google Scholar

[10] S.P. Ringer, W Yeung, BC Muddle, IJ Polmear, Acta metall. mater. 42, 1715 (1994).

Google Scholar

[11] C.R. Hutchinson, X. Fan, S.J. Pennycook and G.J. Shiflet, Acta Metall., 49, 2827(2001).

Google Scholar

[12] Aiwu Zhu, Acta mater. 1997, 45, 4213.

Google Scholar

[13] BM Gable, AW Zhu, GJ Shiflet and EA Starke Jr, submitted to CALPHAD.

Google Scholar

[14] L. Reich, M. Murayama and K. Hono. Acta Mater. 1998, 46, 17, 6053.

Google Scholar

[15] AW Zhu, EA Starke Jr and GJ Shiflet, scripta mater 2004, 53, 35.

Google Scholar

[16] AW Zhu, BM Gable, GJ Shiflet, and EA Starke Jr, Acta Mater. 2004, 52, 3671.

Google Scholar

[17] BM Gable, G. J. Shiflet and E. A. Starke, Jr , Scripta Mater. 2004, 50, 149.

Google Scholar