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HPDL Remelting of Anodised Al-Si-Cu Cast Alloys Surfaces

Treść / Zawartość
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The results of the investigations of the laser remelting of the AlSi9Cu4 cast aluminium alloy with the anodised and non-anodised surface layer and hardness changes have been presented in this paper. The surface layer of the tested aluminium samples was remelted with the laser of a continuous work. The power density was from 8,17•103 W/cm2 to 1,63•104 W/cm2. The metallographic tests were conducted in form of light microscope investigations of the received surface layer. The main goal of the investigation was to find the relation between the laser beam power and its power density falling on a material, evaluating the shape and geometry of the remelted layers and their hardness. As the substrate material two types of surfaces of the casted AlSi9Cu4 alloy were applied – the non–treated as cast surface as well the anodized surface. As a device for this type of surface laser treatment the High Power Diode Laser was applied with a maximum power of 2.2 kW and the dimensions of the laser beam focus of 1.8 x 6.8 mm. By mind of such treatment it is also possible to increase hardness as well eliminate porosity and develop metallurgical bonding at the coating-substrate interface. Suitable operating conditions for HPDL laser treatment were finally determined, ranging from 1.0 to 2.0 kW. Under such conditions, taking into account the absorption value, the effects of laser remelting on the surface shape and roughness were studied. The results show that surface roughness is reduced with increasing laser power by the remelting process only for the non-anodised samples, and high porosity can be found in the with high power remelted areas. The laser influence increases with the heat input of the laser processing as well with the anodisation of the surface, because of the absorption enhancement ensured through the obtained alumina layer.
Rocznik
Strony
45--48
Opis fizyczny
Bibliogr. 12 poz., rys., tab.
Twórcy
autor
  • Silesian University of Technology, Institute of Engineering Materials and Biomaterials, Gliwice, Poland
autor
  • Silesian University of Technology, Institute of Engineering Materials and Biomaterials, Gliwice, Poland
autor
  • Silesian University of Technology, Department of Welding, Gliwice, Poland
Bibliografia
  • [1] Adamiak S. (2010). The influence of the laser doping with boron on a steel 30MnB4 structure and properties. Archives on Foundry Engineering. 10(5), 361-364.
  • [2] Sánchez-Amaya J. M., Boukha Z., Amaya-Vázquez M., Botana F. J. (2012) Weldability of Aluminum Alloys with High-Power Diode Laser, Welding research. (91), 154-161.
  • [3] Dierken R., Gropp S., Kugler P., Gottschling S., Hoffmann P. (2001) Randschichthärten von Großwerkzeugen mit dem 4 kW Diodenlaser. HTM Härterei-Technische Mitteilungen, Zeitschrift für Wärmebehandlung und Werkstofftechnik. (56), 314-320.
  • [4] Formanek B., Piątkowski J., Szymszal J. (2012) Aluminium composite casting dispersion reinforced with iron-aluminium and silicon carbide phases. Archives of Foundry Engineering. (10), 35-38.
  • [5] Yugang M.; Duanfeng H.; Jingzheng Y.; Feng L. (2010). Effect of laser offsets on joint performance of laser penetration brazing for magnesium alloy and steel. Materials and Design. (31), 3121-3126.
  • [6] Maejima M., Saruwatari K., Takaya M. (2000). Friction behaviour of anodic oxide film on aluminum impregnated with molybdenum sulfide compounds, Surface and Coatings Technology. (132), 105-110.
  • [7] Vrublevsky I., Parkoun V., Sokol V., Schreckenbach J. (2004). Study of chemical dissolution of the barrier oxide layer of porous alumina films formed in oxalic acid using a re-anodizing technique. Applied Surface Science. (236), 270–277.
  • [8] Konieczny J., Dobrzański L.A., Labisz K., Duszczyk J. (2004). The influence of cast method and anodizing parameters on structure and layer thickness of aluminum alloys. Journal of Materials Processing Technology. (157–158), 718-723.
  • [9] Labisz K., Dobrzański L.A., Konieczny J. (2008). Anodization of cast aluminium alloys produced by different casting methods. Archives of Foundry Engineering. (8), Special Issue 3, 45-50.
  • [10] Dobrzański L.A., Krupiński M., Labisz K. (2008). Derivative thermo analysis of the near eutectic Al-Si-Cu alloy, Archives of Foundry Engineering. (8), 37-40.
  • [11] Majchrzak E., Dziatkiewicz J. (2011). Axisymmetric modeling of ultrashort-pulse laser interactions with thin metal film. Archives of Foundry Engineering. (4), 182-186.
  • [12] Kulawik A., Winczek J. (2011). Influence of heating rate on sorbitic transformation temperature of tempering C45 steel. Archives of Foundry Engineering. (2), 131-134.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-02093463-b311-4a02-81f0-8f0fb6bd9b45
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