Cladding of Tungsten Carbide and Stellite Using High Power Diode Laser to Improve the Surface Properties of Stainless Steel

2012 ◽  
Vol 585 ◽  
pp. 498-501 ◽  
Author(s):  
Raghuvir Singh ◽  
S.K. Tiwari ◽  
Suman K. Mishra
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Tungsten Carbide ◽  
Diode Laser ◽  
High Power ◽  
Surface Engineering ◽  
Industrial Applications ◽  
Engineering Technique ◽  
Power Diode ◽  
High Power Diode Laser

Surface engineering is one of the most viable methods, in addition to development of new alloys and equipment design, to minimize degradation due to cavitation erosion, and corrosion. Laser surface cladding is relatively a newer engineering technique to produce metallurgically bonded coating for industrial applications due to its inherent benefits. Present paper reports the results obtained on the laser cladding of stainless steel with tungsten carbide (WC) and stellite alloy powder using high power diode laser (HPDL) at various laser parameters. Cladded specimens were characterized for erosion, and corrosion resistance. Both WC and stellite cladding have increased the erosion resistance of stainless steels. WC cladding was found to reduce the corrosion resistance of steel while stellite showed it to increase significantly.

Microstructure, microhardness and corrosion resistance of remelted TiG2 and Ti6Al4V by a high power diode laser

2012 ◽  
Vol 56 ◽  
pp. 36-48 ◽  
Author(s):  
M.R. Amaya-Vazquez ◽  
J.M. Sánchez-Amaya ◽  
Z. Boukha ◽  
F.J. Botana
Keyword(s):  
Corrosion Resistance ◽  
Diode Laser ◽  
High Power ◽  
Power Diode ◽  
High Power Diode Laser

Laser Alloying with WC Ceramic Powder in Hot Work Tool Steel Using a High Power Diode Laser (HPDL)

2006 ◽  
Vol 15-17 ◽  
pp. 193-198 ◽  
Author(s):  
Marek Piec ◽  
Leszek Adam Dobrzański ◽  
Krzysztof Labisz ◽  
Ewa Jonda ◽  
Andrzej Klimpel
Keyword(s):  
Surface Layer ◽  
Tungsten Carbide ◽  
Diode Laser ◽  
Tool Steel ◽  
High Power ◽  
Feed Rate ◽  
Powder Feed Rate ◽  
Powder Feed ◽  
Power Diode ◽  
High Power Diode Laser

Investigations include alloying the X38CrMoV5-3 hot-work tool steel surface layer with the tungsten carbide, using the high power diode laser (HPDL). The tungsten carbide ceramic particles of the medium grain size according to FSSS = 50 /m were introduced using the rotor conveyer to improve the properties of the surface layer. The powder feed rate was set at the steady level of 8.64g/min. Remelting and alloying were carried out several times in the laser power range of 1.2 – 2.3 kW in the remelting/alloying, alloying/remelting sequences. The structural mechanism was determined of gradient layer development, effect was studied of alloying parameters, gas protection method, and powder feed rate on its mechanical properties, and especially on its hardness, abrasive wear resistance, and roughness. Structure changes were revealed consisting, in particular, in its refining, and also hardness and microhardness changes in comparizon to the nonremelted steel. Examination results obtained with the EDX microanalysis, surface and linear analysis of the chemical composition, as well as the X-ray qualitative phase analysis are presented.

Structure and Properties of Gradient Layers Using High Power Diode Laser

2006 ◽  
Vol 530-531 ◽  
pp. 269-274
Author(s):  
Leszek Adam Dobrzański ◽  
Marek Piec ◽  
Zuzanka Trojanová ◽  
Józef Lelątko ◽  
Andrzej Klimpel
Keyword(s):  
Surface Layer ◽  
Tungsten Carbide ◽  
Diode Laser ◽  
High Power ◽  
Feed Rate ◽  
Powder Feed Rate ◽  
Powder Feed ◽  
Protection Method ◽  
Power Diode ◽  
High Power Diode Laser

Investigations include alloying the X38CrMoV5-3 hot-work tool steel surface layer with the tungsten carbide, using the high power diode laser (HPDL). The tungsten carbide ceramic particles of the medium grain size according to FSSS = 50 Bm were introduced using the rotor conveyer to improve the properties of the surface layer. The powder feed rate was set at the steady level of 8.64g/min. Remelting and alloying were carried out several times in the laser power range of 1.2 – 2.3 kW in the remelting/alloying, alloying/remelting sequences. The structural mechanism was determined of gradient layer development, effect was studied of alloying parameters, gas protection method, and powder feed rate on its mechanical properties, and especially on its hardness, abrasive wear resistance, and roughness. Structure changes were revealed consisting, in particular, in its refining, and also hardness and microhardness changes in comparison to the non-remelted steel. Examination results obtained with the EDX microanalysis, surface and linear analyses of the chemical composition, as well as the X-ray qualitative phase analysis are presented.

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