Compressive behaviour of ultrafine-grained AA6063T6 over a wide range of strains and strain rates
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Lothar W. Meyer
Abstract
The flow stress behaviour of commercially available AA6063-AlMg0.5Si0.4 with ultrafine-grain size is investigated over a wide range of strain and strain rates under uniaxial compression. The ultrafine-grained microstructure is achieved by equal channel angular extrusion and characterised by grain sizes well below 1 μm. Results of quasi-static loading show that the ultrafine-grained states behave in an elastic – nearly perfect plastic manner with significantly reduced strain hardening capacity. When compared to the coarse grained counterpart, no change in strain rate sensitivity was measured for the material after two extrusions. In contrast to that, after eight extrusions the material shows significantly increased strain rate sensitivity especially in the range of highest rates above 102 s−1.
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© 2007, Carl Hanser Verlag, München
Artikel in diesem Heft
- Contents
- Contents
- Basic
- Texture and microstructure evolution of ECAP processed AlMg1Mn0.14 alloy
- Modelling grain refinement in fcc metals during equal-channel angular pressing by route “C”
- Fabrication of high strength nanostructured aluminium alloys by hydrostatic extrusion
- Comparison of the plastic strain distribution during equal-channel angular pressing (ECAP) using 2D and 3D FEM modeling
- Deformation twins in ultrafine grained commercial aluminum
- Compressive behaviour of ultrafine-grained AA6063T6 over a wide range of strains and strain rates
- Grain refinement response during twist extrusion of an Al-0.13% Mg alloy
- Preparation of NiO–LiFeO2 solid solutions: the role of mechanical and thermal treatments
- Applied
- Fatigue strength and fracture behavior of steels with and without interstitial carbon at room temperature in air
- The influence of Nd on the corrosion behavior of electroless-deposited Fe–P
- Time-dependent directional solidification of binary Al–Cu alloys in the initial transient
- Effect of V2O5 doping on the microstructure and local composition of textured Sr0.4Ba0.6Nb2O6 ceramics
- Microstructure and mechanical properties of AZ91D alloy prepared by a semi-solid diecasting process
- Development of SMD 32.768 kHz tuning fork type crystals
- Notifications
- DGM News
Artikel in diesem Heft
- Contents
- Contents
- Basic
- Texture and microstructure evolution of ECAP processed AlMg1Mn0.14 alloy
- Modelling grain refinement in fcc metals during equal-channel angular pressing by route “C”
- Fabrication of high strength nanostructured aluminium alloys by hydrostatic extrusion
- Comparison of the plastic strain distribution during equal-channel angular pressing (ECAP) using 2D and 3D FEM modeling
- Deformation twins in ultrafine grained commercial aluminum
- Compressive behaviour of ultrafine-grained AA6063T6 over a wide range of strains and strain rates
- Grain refinement response during twist extrusion of an Al-0.13% Mg alloy
- Preparation of NiO–LiFeO2 solid solutions: the role of mechanical and thermal treatments
- Applied
- Fatigue strength and fracture behavior of steels with and without interstitial carbon at room temperature in air
- The influence of Nd on the corrosion behavior of electroless-deposited Fe–P
- Time-dependent directional solidification of binary Al–Cu alloys in the initial transient
- Effect of V2O5 doping on the microstructure and local composition of textured Sr0.4Ba0.6Nb2O6 ceramics
- Microstructure and mechanical properties of AZ91D alloy prepared by a semi-solid diecasting process
- Development of SMD 32.768 kHz tuning fork type crystals
- Notifications
- DGM News
