Deformation behavior of AA6063 aluminium alloy after removing friction effect under hot working conditions

作者：Chen, Z Y^*; Xu, S Q; Dong, X H

来源：Acta Metallurgica Sinica (English Letters), 2008, 21(6): 451-458.

DOI：10.1016/S1006-7191(09)60008-9

• Arrhenius equation
• Cylindrical specimens
• Deformation behavior
• Friction coefficients
• Hot deformation activation energies
• Hot deformation behaviors
• Simple compressions
• Theoretical modeling

The hot deformation behavior of AA6063 aluminium alloy has been investigated by means of compression tests at temperatures between 400 and 520°C, and strain rates ranging from 2.5 to 10 s-1. Owing to the barreling, the theoretical model on the basis of Hilt s general method is used to calculate the flow stress of a cylindrical specimen under uniaxial simple compression so as to consider the friction effect at the die-specimen interface. A method of evaluating the friction coefficient by combining compression tests with the finite element method is presented. The real flow behavior of AA6063 aluminium alloy can be described with sinh-Arrhenius equation. The hot deformation activation energy Q derived from the corrected stress and strain data is 232.350 kJ/mol.

• 出版日期2008
• 单位太原理工大学; 上海交通大学