Distribution & Access For Publication Downloads News About Us Contact Us
Paper Titles
Modeling of Static and Geometric Dynamic Recrystallization during Hot Extrusion of Al-Mg-Si Alloy
p.728
Analysis of the Rate of Recovery and Recrystallization in Pure Aluminum by a New Rate Equation
p.734
Phase Field Modeling of Solute Trapping in a Al-Sn Alloy during Rapid Solidification
p.740
Grain Refinement Mechanism of Al-5Ti-1B Master Alloy by Ab Initio Calculations
p.746
Effect of Reloading on Dynamic Recrystallization in Shock Deformed Aluminum Alloy
p.755
Mechanical Milling of Quasicrystalline Al-Cu-Fe Alloys
p.761
Aging and Precipitation Behavior in Supersaturated Al-2%Fe Alloy Produced by High-Pressure Torsion
p.766
Casting of Clad Strip by a Twin Roll Caster
p.772
Point Defect Clusters Induced by High-Speed Deformation and its Effect on Age-Hardening in 6061 Aluminum Alloys
p.778

Effect of Reloading on Dynamic Recrystallization in Shock Deformed Aluminum Alloy

Article Preview

Abstract:

In order to verify influence of particle velocity non-uniformity on dynamic recrystallization (DRX), shock tests of D16 Al alloy were conducted under uniaxial strain conditions within strain-rate range of 105 ÷ 107 s-1. The particle velocity non-uniformity arises due to both initial heterogeneity and non-linearity of shock-wave process. Apart from the nature of DRX mechanism, migrational or rotational, the particle velocity non-uniformity facilitates growth of local strain, strain rate and temperature. To adjust a duration of the particle velocity non-uniformity degree, two limiting situations is provided by means of single and double shock loading (reloading). The experimental technique used allows to register both mean particle velocity profile and particle velocity variation which is the quantitative characteristic of velocity non-uniformity. Shock tests of D16 Al alloy in single and reloading regimes [ show that dynamic recrystallization takes place only in the second case. The reloading regime initiates a ten-fold increase in duration of the particle velocity non-uniformity stage, which is sufficient for fulfillment of the well-known DRX conditions: γ 3, dγ/dt 104 s1, T 0.4Tm. The regions of DRX with equal-axis grains of ~1 μm in diameter are revealed with the metallography and X-ray analysis.

You might also be interested in these eBooks
Aluminium Alloys 2014 - ICAA14 View Preview

Info:

Periodical:

Materials Science Forum (Volumes 794-796)

Pages:

755-760

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.794-796.755

Citation:

Cite this paper

Online since:

June 2014

Authors:

Svetlana Atroshenko*, Aleksandr Divakov, Yuri Meshcheryakov, Natalia Naumova

Keywords:

D16 Al Alloy, Dynamic Recrystallization (DRX), Particle Velocity Profile, Particle Velocity Variation, Single and Double Shock Loading (Reloading)

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

* - Corresponding Author

References

[1] Yu. I. Mescheryakov, A. K. Divakov, S.A. Atroshenko and N.S. Naumova, Effect of Velocity Nonuniformity on the Dynamic Recrystallization of Metals in Shock Waves, Technical Physics Letters. 35 (2009) 1125–1128.

DOI: 10.1134/s1063785010120187

Google Scholar

[2] Humphreys FJ, Hatherly M. Recrystallization and related annealing phenomena. Pergamon, Oxford. (1995).

Google Scholar

[3] Derby B. Acta Metall 39 (1991) 955.

Google Scholar

[4] M. A. Meyers, V. F. Nesterenko, J. C. La Salvia, and Q. Xue, Mater. Sci. Eng. A 317 (2001) 204.

Google Scholar

[5] M. A. Meyers, Y. B. Xu, Q, Xue, M. T. Pe'rez-Prado, and T. R. Mc Nelley, Acta Mater. 51 (2003) 1307.

Google Scholar

[6] Meyers MA, Pak H-r. Acta Met 34 (1986) 2493.

Google Scholar

[7] Hynes J, Vecchio KS, Ahzi S. Met Mat Trans A 29 (1998) 191.

Google Scholar

[8] Sevillano JG, van Houtte P, Aernoudt E. Prog Mat Sci 25 (1981) 69.

Google Scholar

[9] Meyers MA, LaSalvia JC, Nesterenko VF, Chen YJ, Kad BK. Recrystallization and related phenomena. In: McNelley TR, editor. Rex '96. Monterey; 1997. pp.27-29.

Google Scholar

[10] Meyers MA, Xue Q, Nesterenko VF, LaSalvia JC. Mat Sci Eng A317 (2001) 204.

Google Scholar

[11] R. Sandstrom, R. Lagneborg, Acta Metall., 23 (1975) 387-398.

Google Scholar

[12] B. Derby, M.F. Ashby, Scripta Metall., 21 (1987) 879-884.

Google Scholar

[13] Chokshi AH., Meyers MA, Scripta Metall Mater 24 (1990) 605.

Google Scholar

[14] Andrade UR, Meyers MA, Vecchio KS, Chokshi AH. Acta Metall Mater 42 (1994) 3183.

Google Scholar

[15] Yu. I. Mescheryakov and A. K. Divakov, Dymat Journal. l (1994) 271.

Google Scholar

[16] J. W. Swegle and D. E. Grady. Calculation of thermal trapping in shear band. Proceeding of Intern. Conf. EXPLOMET-85, pp.705-722.

Google Scholar

[17] J. W. Swegle and D. E. Grady. J. Appl. Phys. 58 (1985) 692.

Google Scholar

Scientific.Net is a registered brand of Trans Tech Publications Ltd
© 2024 by Trans Tech Publications Ltd. All Rights Reserved