Structure changes and mechanical properties of laser alloyed magnesium cast alloys

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

Abstrakty

EN

Purpose: The aim of this work was to investigate structure and mechanical properties of the MCMgAl12Zn1 casting magnesium alloys after laser treatment. The laser treatment was carried out using a high power diode laser (HPDL). Design/methodology/approach: The laser processing of TiC, WC, SiC particles in MCMgAl12Zn1 and the resulted microstructures and properties are discussed in this paper. The resulting microstructure in the modified surface layer was examined. Phase composition was determined by the X-ray diffraction method using XPert device. The measurements of hardness after laser melt injection was also studied. Findings: Structure of the solidyifying material after laser alloying is characteristic with occurrences of areas with the diversified morphology, dependent on solidification rate of the magnesium alloys, is characteristic of structure of the solidified material after laser alloying. The MCMgAl12Zn1 casting magnesium alloys after laser alloying demonstrate similar hardness tests results, in reference to hardness of the alloys before their laser treatment. Research limitations/implications: In this research three powders (titanium carbide, tungsten carbide and silicon carbide) were used to reinforcing the surface of the MCMgAl12Zn1 casting magnesium alloys. Practical implications: High power diode laser can be used as an economical substitute for CO₂ and Nd:YAG lasers to modify the surface magnesium alloy by feeding the carbide particles. Originality/value: The originality of this work is applying of High Power Diode Laser for laser treatment of cast magnesium alloy consisting in fusion penetration of the hard particles of titanium, tungsten, and silicon carbides into the remelted surface layer of the alloy.

Słowa kluczowe

EN

magnesium alloys; high power diode laser; HPDL; laser alloying; tungsten carbide; titanium carbide; silicon carbide

PL

stopy magnezu; laser diodowy dużej mocy; laser HPDL; stopowanie laserowe; węglik wolframu; węglik tytanu; węglik krzemu

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2009
• Tom: Vol. 35, nr 2
• Strony: 77--82
• Opis fizyczny: Bibliogr. 15 poz.

Twórcy

autor

Dobrzański L.

autor

Domagała J.

autor

Malara S.

autor

Tański T.

autor

Kwaśny W.

• 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

• [1] 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.
• [2] M. Bonek, L.A. Dobrzański, Functional properties of laser modified surface of tool steel, Journal of Achievements in Materials and Manufacturing Engineering 17 (2006) 313-316.
• [3] L.A. Dobrzański, T. Tański, L. Čížek, Heat treatment impact on the structure of die-cast magnesium alloys, Journal of Achievements in Materials and Manufacturing Engineering 20 (2007) 431-434.
• [4] 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 24/1 (2007) 27-34.
• [5] 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.
• [6] 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.
• [7] 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.
• [8] J. Dutta Majumdar, B. Ramesh 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.
• [9] 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.
• [10] J.E. Gray, B. Luan, Protective coatings on magnesium and its alloys - critical review, Journal of Alloys and Compounds 336 (2002) 88-113.
• [11] 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.
• [12] E.F. Horst, B.L. Mordike, Magnesium Technilogy. Metallurgy, Design Data, Application, Springer-Verlag, Berlin Heidelberg, 2006.
• [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] A. Klimpel, Cladding and thermal spraying: technologies, WNT, Warsaw, 2000 (in Polish).
• [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.