Laser micro-coating of stainless steel on an Al-Si cast alloy
2020
Kraus, P., Jan Evangelista Purkyne Univ. in Usti nad Labem (Czech Republic) | Hren, I., Jan Evangelista Purkyne Univ. in Usti nad Labem (Czech Republic) | Naprstkova, N., Jan Evangelista Purkyne Univ. in Usti nad Labem (Czech Republic) | Michna, S., Jan Evangelista Purkyne Univ. in Usti nad Labem (Czech Republic) | Michnova, L., Jan Evangelista Purkyne Univ. in Usti nad Labem (Czech Republic) | Aboltins, A., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia)
In the article investigations on opportunities to improve the properties of the surface layer obtained on Al-Si alloy by laser feeding of stainless steel 17 246 into the aluminium substrate are presented. According to the reviewed literature, it can be concluded that laser surface deposition can be employed as a technique that will improve the surface properties of aluminium alloys. Aluminium alloys have wide application in the automotive, domestic and aerospace industries due to their excellent mechanical properties. One of the ways to improve corrosion and wear resistance is laser surface deposition of different alloying elements. The main aim of this study is structural changes on the layer of Al-Si cast alloy by laser austenitic stainless steel 17 246 deposition. In order to remelt the Al-Si alloy surface the laser of 1.9 kW has been used for the facing area, and 1.6 kW for the edge. The linear laser scan rate of the beam was set 450 mm•minE−1 for the facing area, and for the edge 550 mm•minE−1. We observed that the thin surface made of austenitic stainless steel had a lot of splits. The purpose of this study is also to enhance inherent properties of surface materials to create new products or improve the existing ones. Another aim of this work was also to determine the surface properties of the Al-Si alloy after laser surface application of stainless steel 17 246.
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