Finite element simulation of tip test with an aluminum alloy

2004 ◽  
Vol 157-158 ◽  
pp. 171-176 ◽  
Author(s):  
Y.-T. Im ◽  
S.-H. Kang ◽  
J.-S. Cheon ◽  
J.-H. Lee
Keyword(s):  
Finite Element ◽  
Aluminum Alloy ◽  
Finite Element Simulation ◽  
Element Simulation ◽  
Tip Test

Finite Element Simulation of the Effects of Mould Angle on the Equal Channel Angular Pressing for Al-Zn-Mg-Cu Alloy

2010 ◽  
Vol 97-101 ◽  
pp. 3075-3078
Author(s):  
Gang Yi Cai ◽  
Xiao Xia Liu
Keyword(s):  
Finite Element ◽  
Aluminum Alloy ◽  
Finite Element Simulation ◽  
Equal Channel Angular Pressing ◽  
Effective Strain ◽  
Large Angle ◽  
Maximum Load ◽  
Angular Pressing ◽  
Steady Stage ◽  
Element Simulation

Finite element simulation of the effects of mould angle on the equal channel angular pressing (ECAP) for Al-Zn-Mg-Cu aluminum alloy was investigated by using DEFORM-3D program. The results show that the work load ascended with the increasing of the mould angle and was divided into five stages including rapid increasing stage, steady stage, rapid increasing stage, steady stage and rapid drop stage. When the angle decreased from 150° to 90°, the maximum load increased by 2.87 times and the energy consuming increased by 2.36 times. In addition, with the decreasing of mould angle, the average effective strain increased after single extrusion, while the degree of effective strain uniformity of the sample decreased. There were greater strain grads between inner and surface part. As mentioned above, large angle mould should be adopted on ECAP for Al-Zn-Mg-Cu aluminum alloy in order to ensure extrusion smoothly and attain homogeneous fine grain.

Finite Element Simulation of Shear Strain during High-Ratio Differential Speed Rolling of Aluminum Alloy 5083

2016 ◽  
Vol 716 ◽  
pp. 700-707 ◽  
Author(s):  
Alexander Pesin ◽  
Denis Pustovoytov
Keyword(s):  
Finite Element ◽  
Aluminum Alloy ◽  
Aluminum Alloys ◽  
Shear Strain ◽  
Finite Element Simulation ◽  
High Ratio ◽  
Aluminum Alloy 5083 ◽  
Element Simulation ◽  
Differential Speed Rolling ◽  
Differential Speed

High-ratio differential speed rolling (HRDSR) is a process of severe plastic deformation (SPD) that can be used to improve the structure and properties of aluminum alloys. The mechanism of SPD during HRDSR comes from its large equivalent strain, which is composed of compressive strain and additional shear strain. Plastic strain control of aluminum alloys are of importance for improvement of sheet microstructure and properties. This paper presents the results of the finite element simulation of shear strain during high-ratio differential speed rolling of aluminum alloy 5083. Four deformation routes UD, TD, RD and ND were simulated. By the route UD the sheet was not rotated between two deformation steps, while by the other three cases it was rotated with 180° degrees. By the route RD the rotation axis was the rolling direction, by the route TD the transverse direction and by the route ND the normal direction. The effect of rolls velocity ratio, friction coefficient and deformation route on the shear strain and the effective strain of Al 5083 was found. The results of investigation can be used to optimize the high-ratio differential speed rolling process to improve microstructure and mechanical properties of aluminum sheets.

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