Abstract
We investigate the relationship between inhomogeneously distributed S precipitates and hardness of stress-aged single-crystal Al-Cu-Mg. First, the effect of crystallographic anisotropy is considered and modeled from the results of free-stress aged single-crystal Al-1.2Cu-0.5Mg with (\( 1\bar{1}8 \)), (\( \bar{1}\bar{2}5 \)), (356), and (319) plane orientations. Effect of crystallographic anisotropy depends on the angle between the plane orientation of the single crystal and {012} habit planes of the S precipitates. Second, the effects of the magnitude of the applied stress and direction on the S-laths’ size and distribution are considered. As the applied stress-induced S-laths inhomogeneously distribute during aging, the effect of the single-crystal’s orientation on the distribution of S-laths is modeled. The results show that a single crystal near (111) plane orientation has the lowest stress-orienting effect. Finally, at higher applied stresses, such as 50 MPa, the S precipitates disperse more homogeneously due to the influence of the dislocations. Inhibiting the effect of dislocation depends on the angle between the plane orientation of the single crystal and the {111} dislocation slide planes. A precipitate-strengthening model of the stress-aged Al-Cu-Mg alloys is established based on crystallographic anisotropy, stress-orienting precipitates, and inhibiting the effect of dislocations.
Similar content being viewed by others
References
T.F. Morgeneyer, J. Besson, H. Proudhon, M.J. Starink, and I. Sinclair: Acta Mater., 2009, vol. 57, pp. 3902–15.
K.K. Cho, Y.H. Chung, C.W. Lee, S.I. Kwun, and M.C. Shin: Scripta Mater., 1999, vol. 40, pp. 651–7.
A.K. Vasudevan, M.A. Przystupa, and W.G. Fricke Jr.: Scripta Mater., 1990, vol. 24, pp. 1429–34.
M. Toyoda, H. Toda, H. Ikuno, T. Kobayashi, M. Kobayashi, and K. Matsuda: Scripta Mater., 2007, vol. 56, pp. 377–80.
N.J. Kim and E.W. Lee: Acta Metall. Mater., 1993, vol. 41, pp. 941–8.
W.F. Hosford and S.P. Agrawal: Metall. Trans. A, 1975, vol. 6, pp. 487–91.
T. Eto, A. Sato, and T. Mori: Acta Mater., 1978, vol. 26, pp. 499–508.
B. Skrotzki, G.J. Shiflet, and E.A. Starke Jr.: Metall. Trans. A, 1996, vol. 27, pp. 3431–44.
A.W. Zhu and E.A. Starke Jr.: Acta Mater., 2001, vol. 49, pp. 2285–95.
H. Hargarter, M.T. Lyttle, and E.A. Starke Jr.: Mater. Sci. Eng. A, 1998, vol. 257, pp. 87–99.
A. Heinz, A. Haszler, C. Keidel, S. Moldenhauer, R. Benedictus, and W.S. Miller: Mater. Sci. Eng. A, 2000, vol. 280, pp. 102–7.
L.H. Zhan, J.G. Lin, and T.A. Dean: Int. J. Mach. Tools Manuf., 2011, vol. 51, pp. 1–17.
R.A. Jeshvaghani, H. Zohdi, H.R. Shahverdi, M. Bozorg, and S.M.M. Hadavi: Mater. Charact., 2012, vol. 73, pp. 8–15.
R.A. Jeshvaghani, H.R. Shahverdi, and S.M.M. Hadavi: Mater. Sci. Eng. A, 2012, vol. 552, pp. 172–8.
J. Zhang, Y.L. Deng, and X.M. Zhang: Mater. Sci. Eng. A, 2013, vol. 563, pp. 8–15.
H.Y. Li, W. Kang, and X.C. Lu: J. Alloy Compd., 2015, vol. 640, pp. 210–8.
M.R. Louthan: Trans. TMS-AIME, 1963, vol. 227, pp. 1166–70.
M.R. Louthan and C.L. Angerman: Trans. TMS-AIME, 1966, vol. 236, pp. 221–2.
X.Q. Ma, S.Q. Shi, C.H. Woo, and L.Q. Chen: Comput. Mater. Sci., 2002, vol. 23, pp. 83–90.
Y. Nakada, W.C. Leslie, and T.P. Churay: Trans. ASM, 1967, vol. 60, pp. 223–7.
A.W. Zhu and E.A. Starke: Acta Mater., 1999, vol. 47, pp. 3263–9.
A.W. Zhu, J. Chen, and E.A. Starke: Acta Mater., 2000, vol. 48, pp. 2239–46.
A.W. Zhu and E.A. Starke: Acta Mater., 2001, vol. 49, pp. 3063–9.
E.A. Starke Jr. and J.T. Staley: Prog. Aerosp. Sci., 1996, vol. 32, pp. 131–72.
J.F. Nie, B.C. Muddle, and I.J. Polmear: Mater. Sci. Forum, 1996, vol. 217–222, pp. 1257–62.
J.F. Nie and B.C. Muddle: J. Phase Equilib., 1998, vol. 19, pp. 543–51.
J.F. Nie and B.C. Muddle: Acta Mater., 2008, vol. 56, pp. 3490–501.
X.B. Guo, Y.L. Deng, J. Zhang, and X.M. Zhang: Mater. Sci. Eng. A, 2015, vol. 644, pp. 358–64.
X.B. Guo, Y.L. Deng, J. Zhang, and X.M. Zhang: Mater. Charact., 2015, vol. 107, pp. 197–201.
H.P.E.A. Westgren: Ark. Kemi Mineral. Geol., 1943, vol. 16B, p. 13.
L.F. Mondolfo: Aluminum Alloys—Structure and Properties, Butterworth, London, 1976.
S.W. Wang and M.J. Starink: Int. Mater. Rev., 2005, vol. 50, pp. 193–215.
E. Schmid and W. Boas: Plasticity of Crystals, F. A. Hughes and Co. Ltd., London, 1950.
Acknowledgments
The authors gratefully acknowledge the support from the Chinese National Science Foundation (Project No. 51375503), the 973 Program Foundation of China (Grant No. 2012CB619505), the Major State Research Program of China (Project No. 2016YFB0300901), and the Major Science and Technology Project of Guangxi Province in China (Project No. 1412001-5).
Author information
Authors and Affiliations
Corresponding author
Additional information
Manuscript submitted December 15, 2016.
Rights and permissions
About this article
Cite this article
Guo, X., Zhang, Y., Zhang, J. et al. A Precipitate-Strengthening Model Based on Crystallographic Anisotropy, Stress-Induced Orientation, and Dislocation of Stress-Aged Al-Cu-Mg Single Crystals. Metall Mater Trans A 48, 4857–4870 (2017). https://doi.org/10.1007/s11661-017-4257-9
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11661-017-4257-9