The growing environmental awareness has led to weight-reduction efforts for any components and assemblies, which are in motion during their service to increase the energy-efficiency of the system. The replacement of the conventional construction material steel by light metals, especially aluminium, plays a vital role in this respect. The development of high-strength alloys has allowed for the application of this material in many fields, which require mechanical strength. Yield strengths of over 300 MPa can be achieved especially with the age-hardenable alloying systems of the 2000 series. the 6000 series (magnesium, silicon), and the 7000 series. However, a strengthening of the material as well as its surface to withstand not only mechanical loads, but also strong corrosive and tribological loads, cannot easily be achieved.
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