Abstract
The article deals with the presentation of the microstructure characterization of Al-alloy AW 5454, which is intended for laser hybrid welding. In the first part, the procedure of laser hybrid welding and comparison to other laser surface modification techniques is presented. In the following, the key methods of metallographic characterization and hardness measurements at selected locations of Al-alloy AW 5454 are presented, which made it possible to carry out a scientific evaluation of the obtained results. The goal of the research was to gain insight into the microstructure of Al-alloy AW 5454, which in the future will make it possible to determine those technological parameters of laser hybrid welding that have the greatest influence on the resulting final microstructure and thus on the properties of the weld.
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