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Modeling and Experimental Study of Static Recovery and Mechanical Behavior of AA5052 Alloy During Cold-Working and Subsequent Annealing | ||
| Iranian Journal of Materials Forming | ||
| مقاله 4، دوره 4، شماره 1، تیر 2017، صفحه 28-38 اصل مقاله (1.89 M) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22099/ijmf.2017.3997 | ||
| نویسندگان | ||
| M. Seyed Salehi1؛ N. Anjabin* 2 | ||
| 1Department of materials science and engineering, K. N. Toosi University of Technology, Tehran, Iran | ||
| 2shiraz university | ||
| چکیده | ||
| In the present study, the mechanical behavior of AA5052 aluminum alloy during cold deformation and subsequent isothermal annealing in a temperature range of 225-300oC was investigated using the uniaxial tensile test data. It is found that by increasing the annealing time and temperature the material yield strength is decreased. The microstructural investigations of the annealed samples show that the grains are elongated and there is no evidence of recrystallization. Hence, recovery is the main restoration phenomenon during the annealing treatment. The work hardening behavior of the alloy during cold work is modeled using a dislocation density based modeling approach and the softening behavior of deformed samples during subsequent annealing is modeled by applying a kinetics equation relating the yield strength to the annealing parameters. The kinetics equation is a nonlinear differential equation and it’s solved numerically by employing Runge-Kutta-Fehlberg (RKF) integration scheme which is coupled with Gauss-Newton nonlinear optimization technique to obtain the material constants of the model. The numerical results are validated using the experimental flow data. | ||
| کلیدواژهها | ||
| Kinetics of static recovery؛ AA5052 aluminum alloy؛ Cold working؛ Isothermal annealing؛ Nonlinear regression | ||
| مراجع | ||
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[1] H. J. McQueen, S. Spigarelli, M. E. Kassner, and E. Evangelista, Hot deformation and processing of aluminum alloys: CRC Press (2011).
[2] A. Rollett, F. Humphreys, G. S. Rohrer, and M. Hatherly, Recrystallization and related annealing phenomena: Elsevier (2004).
[3] H. Mecking and U. Kocks, Kinetics of flow and strain-hardening, Acta Metallurgica, 29 (1981) 1865-1875.
[4] Y. Estrin and H. Mecking, A unified phenomenological description of work hardening and creep based on one-parameter models, Acta Metallurgica, 32 (1984) 57-70.
[5] G. Borelius, S. Berglund, and S. Sjoberg, Measurements on the Evolution of Heat During the Recovery of Cold-Worked Metals, Arkiv for Fysik, 6 (1953) 143-149.
[6] J. Friedel and R. Smoluchowski, Les dislocations, Physics Today, 10 (1957) 36.
[7] D. Kuhlmann, G. Masing, and J. Raffelsieper, On the theory of recovery, Zeitsch Metall, 40 (1949) 241-6.
[8] E. Nes, Recovery revisited, Acta metallurgica et materialia, 43 (1995) 2189-2207.
[9] M. Verdier, Y. Brechet, and P. Guyot, Recovery of AlMg alloys: flow stress and strain-hardening properties, Acta materialia, 47 (1998) 127-134.
[10] A. Standard, E8m-09: Standard Test Methods for Tension Testing of Metallic Materials, Annual Book of ASTM Standards, ASTM, West Conshohocken, PA, (2009) 127.
[11] J. Liu and J. G. Morris, Recrystallization microstructures and textures in AA 5052 continuous cast and direct chill cast aluminum alloy, Materials Science and Engineering: A, 385 (2004) 342-351.
[12] U. Kocks, Laws for work-hardening and low-temperature creep, Journal of engineering materials and technology, 98 (1976) 76-85.
[13] R. L. Burden and J. D. Faires, Numerical Analysis.(2001) Brooks/Cole, USA.
[14] W. Poole, M. Militzer, and M. Wells, Modelling recovery and recrystallisation during annealing of AA 5754 aluminium alloy, Materials science and technology, 19 (2003) 1361-1368.
[15] A. Seeger, D. Wolf, and H. Mehrer, Analysis of tracer and nuclear magnetic resonance measurements of self‐diffusion in aluminium, physica status solidi (b), 48 (1971) 481-496.
[16] M. Mantina, Y. Wang, L. Chen, Z. Liu, and C. Wolverton, First principles impurity diffusion coefficients, Acta Materialia, 57 (2009) 4102-4108.
[17] W. A. Soer, Interactions between dislocations and grain boundaries, (2006).
[18] L. F. Mondolfo, Structure and properties of aluminum alloys, Metallurgiya, Moscow, (1979). | ||
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