Effect of Laser Feeding on Heat Treated Aluminium Alloy Surface Properties

Archives of Metallurgy and Materials

D. Janicki¹  K. Lukaszkowicz²  T. Tański²  W. Borek²  L. A. Dobrzański²  K. Labisz² 

[1] Silesian University of Technology, Department of Welding, 18a Konarskiego Str., 44-100 Gliwice , Poland;Silesian University of Technology, Division of Materials Processing Technology, Management and Computer Techniques in Materials Science, Institute of Engineering Materials and Biomaterials, 18a Konarskiego Str., 44-100 Gliwice, Poland

关键词: Keywords: Manufacturing and Processing;    Ceramic powder;    Laser Surface Treatment;    Aluminium alloys;    HPDL laser;    Remelting;   

DOI  :  10.1515/amm-2016-0126

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

In this paper are presented the investigation results concerning microstructure as well as mechanical properties of the surface layer of cast aluminium-silicon-copper alloy after heat treatment alloyed and/ or remelted with SiC ceramic powder using High Power Diode Laser (HPDL). For investigation of the achieved structure following methods were used: light and scanning electron microscopy with EDS microanalysis as well as mechanical properties using Rockwell hardness tester were measured. By mind of scanning electron microscopy, using secondary electron detection was it possible to determine the distribution of ceramic SiC powder phase occurred in the alloy after laser treatment. After the laser surface treatment carried out on the previously heat treated aluminium alloys, in the structure are observed changes concerning the distribution and morphology of the alloy phases as well as the added ceramic powder, these features influence the hardness of the obtained layers. In the structure, there were discovered three zones: the remelting zone (RZ) the heat influence zone (HAZ) and transition zone, with different structure and properties. In this paper also the laser treatment conditions: the laser power and ceramic powder feed rate were investigated. The surface laser structure changes in a manner, that there zones are revealed in the form of. This carried out investigations make it possible to develop, interesting technology, which could be very attractive for different branches of industry.

【 授权许可】

Unknown