Influence of the laser modification of surface on properties and structure of magnesium alloys

• Autorzy: Dobrzański, L. , Malara, S. , Domagała, J. , Tański, T. , Gołombek, K.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The aim of this work was to improve the surface layer cast magnesium cast alloys by laser surface treatment, determine the laser treatment parameters and examine structure and properties. Design/methodology/approach: The laser treatment of magnesium alloys with alloying SiC and TiC powders with the particles size below 75 μ m and over 6.4 μm was carried out using a high power diode laser (HPDL). The resulting microstructure in the modified surface layer and was examinated using scanning electron microscopy. The X-ray qualitative and quantitative microanalysis and the analysis of a surface distribution of cast elements in the examined magnesium cast alloy was examined. The measurements of hardness and roughness of the modified surface layer was also studied. Findings: The alloyed region has a fine microstructure with hard carbide particles. Hardness of laser surface alloyed layer was dropped as compared to alloy without laser treatment. The roughness of layer surface increased after laser alloying and values are bigger for SiC alloying particles. Research limitations/implications: The investigations were conducted for cast magnesium alloys MCMgAl12Zn1 and MCMgAl9Zn1 and also TiC and SiC powders. One has used laser power in the range from 1.2 to 2.0 kW. Practical implications: The results obtained in this investigation were promising to compared other conventional processes. High Power Diode Laser can be used as an economical substitute of Nd:YAG and CO₂ to improve the surface magnesium alloy by feeding the carbide particles. Originality/value: The value of this work is definition of the influence of laser treatment parameters on quality, microstructure and hardness of magnesium cast alloys surface layer.

Słowa kluczowe

PL

obróbka powierzchniowa; stopy magnezu; obróbka laserowa; węglik krzemu; węglik tytanu

EN

surface treatment; magnesium alloys; laser treatment; silicon carbide; titanium carbide

• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2009
• Tom: Vol. 35, nr 2
• Strony: 95-100
• Opis fizyczny: Bibliogr. 15 poz.

Twórcy

autor

Dobrzański, L.

autor

Malara, S.

autor

Domagała, J.

autor

Tański, T.

autor

Gołombek, K.

• Division of, Materials Processing Technology, Management and Computer Techniques in Materials Science, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland,

Bibliografia

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