A constitutive description of the deformation of commercial aluminum-1% magnesium alloy (AA5005) under hot working conditions has been formulated on a rational basis. The strain dependence of the flow stress is described by means of the evolution law earlier advanced by Sah et al. The optimization procedure of the experimental stress-strain data allowed the determination the extrapolated values of the initial flow stress and saturation stress which were subsequently correlated with temperature and strain rate by means of the kinetic model proposed by Kocks. It is shown that the initial work-hardening rate of this alloy is strongly dependent both on temperature and strain rate and that the temperature dependence is much more significant than that explained by the temperature dependence of the shear modulus of aluminum. The best description of the experimental flow stress data is obtained by expressing the initial work-hardening rate as a function of the effective strain rate, in terms of a simple parametric relationship, rather than considering a constant value for this parameter, independent of temperature and strain rate. The accuracy of the constitutive description proposed, regarding the reproduction of both the experimental flow stress and work-hardening rate, makes it reliable for its use in the analysis of hot-working processes involving this material.
Skip Nav Destination
Article navigation
July 2001
Technical Papers
A Constitutive Description of Aluminum-1% Magnesium Alloy Deformed Under Hot-Working Conditions
E. S. Puchi Cabrera
E. S. Puchi Cabrera
School of Metallurgical Engineering and Materials Science, Faculty of Engineering, Universidad Central de Venezuela, Apartado postal 47885, Los Chaguaramos, Caracas 1045, Venezuela
Search for other works by this author on:
E. S. Puchi Cabrera
School of Metallurgical Engineering and Materials Science, Faculty of Engineering, Universidad Central de Venezuela, Apartado postal 47885, Los Chaguaramos, Caracas 1045, Venezuela
Contributed by the Materials Division for publication in the JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY. Manuscript received by the Materials Division January 3, 2000; revised manuscript received February 5, 2001. Associate Editor: G. Johnson.
J. Eng. Mater. Technol. Jul 2001, 123(3): 301-308 (8 pages)
Published Online: February 5, 2001
Article history
Received:
January 3, 2000
Revised:
February 5, 2001
Citation
Cabrera, E. S. P. (February 5, 2001). "A Constitutive Description of Aluminum-1% Magnesium Alloy Deformed Under Hot-Working Conditions ." ASME. J. Eng. Mater. Technol. July 2001; 123(3): 301–308. https://doi.org/10.1115/1.1370374
Download citation file:
Get Email Alerts
Cited By
Modeling Growth and Viscous Flow of Oxide on Cylindrical Silicon Surfaces Including Piezoviscous Inhibition
J. Eng. Mater. Technol (April 2025)
Thermal Conductivity of 3D-Printed Metal Using Extrusion-Based Metal Additive Manufacturing Process
J. Eng. Mater. Technol (April 2025)
Related Articles
On the Mechanical Threshold Stress of Aluminum: Effect of the Alloying Content
J. Eng. Mater. Technol (April,2001)
Constitutive Equations for Commercial-Purity Aluminum Deformed Under Hot-Working Conditions
J. Eng. Mater. Technol (January,1995)
Discussion: “A Critical Reexamination of Classical Metal Plasticity” (Wilson, C.D., 2002, ASME J. Appl. Mech., 69 , pp. 63–68)
J. Appl. Mech (September,2002)
Sheet Orientation Effects on the Hot Formability Limits of Lightweight Alloys
J. Manuf. Sci. Eng (December,2011)
Related Proceedings Papers
Related Chapters
Effect of Cd Additions on Microstructure and Properties of Mg-Cd Binary Magnesium Alloy
International Conference on Mechanical Engineering and Technology (ICMET-London 2011)
A Study on Gas Protection Control System of Magnesium Alloy Melt
Proceedings of the 2010 International Conference on Mechanical, Industrial, and Manufacturing Technologies (MIMT 2010)
Processing/Structure/Properties Relationships in Polymer Blends for the Development of Functional Polymer Foams
Advances in Multidisciplinary Engineering