Effects of friction-welding parameters on the morphological properties of an Al/Cu bimetallic joint
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The objective of this research is to consider the effects of certain parameters of the friction-welding process on the morphology of an aluminum/copper joint. The effect of the following parameters was monitored: the operating time, the operating pressure, the forging time and the forging pressure. The speed was constant during the binding process and reached 1500 min(-1). The preparation of the welding materials was performed in accordance with the industrial production conditions. With the SEM-EDS analysis, it was found that the morphology of the Al/Cu interface slightly changes when we change the distance from the rotation axis, irrespective of the combination of the friction-welding parameters. Apart from this, the joined effects of the operating pressure of 48 MPa and the forging pressure of 160 MPa caused a morphological change of the Al/Cu interface, while the forging time at the moment of the combined pressurizing effect significantly influenced the modification of the Al/Cu in...terface shape within a very narrow time interval of only a few seconds.
Keywords:friction welding / bimetallic joint / interface / aluminum / copper / SEM-EDS
Source:Materiali in tehnologije, 2016, 50, 1, 89-94
- Institute of Metals and Technology