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Al6061 material properties for phase-change simulation_ [16]
| Property | Value |
|---|---|
| Ttrans [K] | 925.15 |
| δT [K] | 50 |
| Δhf [kJ/kg] | 380 |
| ρsolid [kg/m3] | 2705 |
| ρliquid [kg/m3] | 2415 |
| Cp,solid [J/kg·K] | 870 |
| Cp,liquid [J/kg·K] | 1170 |
| κsolidus [W/m·K] | 66.5 |
| κliquid [W/m·K] | 90 |
CDFW process parameters_
| Process Parameter | Value / range |
|---|---|
| Rotational Speed (rpm) | 2000 |
| Friction Pressure (MPa) | 21 |
| Friction time (s) | 4, 5, 6, 9, 10, 12 |
FEM boundary conditions_
| Model | Feature | Boundary Condition |
|---|---|---|
| Solid Mechanics | The central axis of the parts | Axial Symmetry |
| The outer surfaces of the parts | Free to deform | |
| The Entire model | Zero initial displacement | |
| The rotating part | Rigid motion suppression | |
| The end of the fixed part | Axial load | |
| Heat Transfer | T = 305 K | Initial temperature |
| The central axis of the parts | Axial symmetry | |
| The outer surfaces of the parts | Heat flux according to q0 = h · (Text − T) | |
| Welding Parameters | Rotation | 0 s to tf = rotation speed, otherwise zero |
| Pressure | 0 s to tf = applied pressure, otherwise zero | |
Chemical composition in weight percent of Al6061_
| Element | Si | Fe | Cu | Mn | Mg | Zn | Cr | Ti | Al |
|---|---|---|---|---|---|---|---|---|---|
| Wt% | 0.75 | 0.5 | 0.5 | 0.15 | 0.9 | 0.03 | 0.03 | 0.05 | Rest |