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Purpose: The aim of this work was to improve the surface layer cast magnesium alloy EN-MCMgAl6Zn1 by laser surface treatment. The purpose of this work was also to determine the laser treatment parameter. Design/methodology/approach: The laser treatment of an EN-MCMgAl6Zn1 magnesium alloy with alloying WC and also TiC powders was carried out using a high power diode laser (HPDL). The resulting microstructure in the modified surface layer was examinated using scanning electron microscopy. Phase composition was determined by the X-ray diffraction method using the XPert device. The measurements of microhardness of the modified surface layer was also studied. Findings: The alloyed region has a fine microstructure with hard carbide particles. Microhardness of laser surface alloyed layer with both TiC and WC particles was significantly improved as compared to alloy without laser treatment. Research limitations/implications: In this research two powders (WC and TiC) were used with the particle size over 5 µm This investigation presents different speed rates feed by one process laser power. 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 originality of this work is applying of High Power Diode Laser for alloying of magnesium alloy using hard particles like tungsten carbide and titanium carbide.
Wydawca
Rocznik
Tom
Strony
179--186
Opis fizyczny
Bibliogr. 16 poz., wykr.
Twórcy
autor
autor
autor
autor
autor
- 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, leszek.dobrzanski@polsl.pl
Bibliografia
- [1] E. F. Horst, B.L. Mordike, Magnesium Technology. Metallurgy, Design Data, Application, Springer-Verlag, Berlin Heidelberg 2006.
- [2] G. Abbas, L. Li, U. Ghazanfar, Z. Liu, Effect of high power diode laser surface melting on wear resistance of magnesium alloys, Wear 260 (2006) 175-180.
- [3] M. Bonek, L.A. Dobrzański, Functional properties of laser modified surface of tool steel, Journal of Achievements in Mechanical and Materials Engineering 17 (2006) 313-316.
- [4] L. A. Dobrzański, T. Tański, L. Čížek, Heat treatment impact on the structure of die-cast magnesium alloys, Journal of Achievements in Mechanical and Materials Engineering 20 (2007) 431-434.
- [5] L. A. Dobrzański, K. Labisz, M. Piec, A. Klimpel, Modelling of surface layer of the 31CrMoV12-18 tool steel using HPDL laser for alloying with TiC powder, Journal of Achievements in Materials and Manufacturing Engineering 24/2 (2007) 27-34.
- [6] L. A. Dobrzański, K. Labisz, M. Piec, A. Klimpel, Mechanical properties of the surface layer of the laser alloyed 32CrMoV12-28 steel, Archives of Materials Science and Engineering 29/1 (2008) 57-60.
- [7] L. A. Dobrzański, A. Polok, E. Jonda, Structure and properties of surface layers obtained by alloying of the hot work tool steels, Journal of Achievements in Materials and Manufacturing Engineering 17 (2006) 329-332.
- [8] D. Dube, M. Fiset, A. Couture, I. Nakatsugawa, Characterization and performance of laser melted AZ91D and AM60B, Materials Science and Engineering A299 (2001) 38-45.
- [9] J. Dutta Majumdar, R. Galun, B.L. Mordike, I. Manna, Effect of laser surface melting on corrosion and wear resistance of a commercial magnesium alloy, Materials Science and Engineering A361 (2003) 119-129
- [10] J. D. Majumdar, B. R. Chandra, R. Galun, B. L. Mordike, I. Manna, Laser composite surfacing of a magnesium alloy with silicon carbide, Composites Science and Technology 63 (2003) 771-778.
- [11] J. E. Gray, B. Luan, Protective coatings on magnesium and its alloys-critical review, Journal of Alloys and Compounds 336 (2002) 88-113.
- [12] H. Hiraga, T. Inoue, Y. Kojima, S. Kamado, S. Watanabe, Surface modification by dispersion of hard particles on magnesium alloy with laser, Materials Science Forum 253 (2000) 350-351.
- [13] S. Ignat, P. Sallamand, D. Grevey, M. Lambertin, Magnesium alloys laser (Nd:YAG) cladding and alloying with side injection of aluminium powder, Applied Surface Science 225 (2004) 124-134.
- [14] P. Kołodziejczak, W. Kalita, A. Kolasa, Modification of surface layer of Mg alloy by laser cladding, Proceedings of the 4th International Conference "Advances in Production Engineering" APE'2007, Warsaw, 2007, 459-468.
- [15] A. H. Wang, H. B. Xia, W. Y. Wang, Z. K. Bai, X. C. Zhu, C. S. Xie, YAG laser cladding of homogenous coating onto magnesium alloy, Materials Letters 60 (2006) 850-853.
- [16] Y. Gao, C. Wang, M. Yao, H. Liu, The resistance to wear and corrosion of laser cladding Al2O3 ceramic coating on Mg alloy, Applied Surface Science 253 (2007) 5306-5311.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BWAW-0001-0034