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Materials Science Poland
EN As the reports in the literature regarding corrosion performance of Al/TiB2 MMC are rather contradictory, the optimization of laser surface alloying parameters for these composite coatings seems to be necessary. The characterization of the MMC was carried out by optical microscopy (OM), scanning ele[...]
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Biuletyn Instytutu Spawalnictwa w Gliwicach
PL Przedstawiono wyniki badań stopowania laserowego stopu aluminium AlSi7Cu4MgMn za pomocą węglika krzemu. Celem badań było określenie wpływu mocy wiązki laserowej, prędkości przesuwu wiązki laserowej, natężenia podawania proszku ceramicznego i obecności topnika aktywującego na jakość ściegów stopowany[...]
EN The article presents the results of tests on the laser surface alloying of AlSi7Cu4MgMn aluminium alloy using silicon carbide. The objective of the tests was to establish the influence of laser beam power and travel rate, ceramic powder feeding rate and presence of activating flux on the quality of [...]
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Archives of Metallurgy and Materials
2016 Vol. 61, iss. 3 1309--1314
EN The paper presents results of the effect of laser surface remelting and alloying by carbides powders of NbC, TaC, TiC, VC and WC on the structure and thermal fatigue resistance of the surface layer of hot work tool steels X40CrMoV5-l and 32CrMoV12-28. The laser surface alloying and remelting treatme[...]
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Journal of Achievements in Materials and Manufacturing Engineering
EN Purpose: The goal of this study is to investigate effects of laser surface alloying with SiC powder on microstructural changes and properties of vacuum sintered austenitic X2CrNiMo17-12-2, ferritic X6Cr13 and duplex X2CrNiMo22-8-2 stainless steels. Design/methodology/approach: Surface modification o[...]
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Archives of Metallurgy and Materials
2018 Vol. 63, iss. 4 2039--2049
EN The sintered stainless steels of different microstructures (austenitic, ferritic and duplex) were laser surface alloyed with hard powders (SiC, Si3 N4 ) and elemental alloying powders (Cr, FeCr, FeNi) to obtain a complex steel microstructure of improved properties. Laser surfac[...]
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Archives of Metallurgy and Materials
EN Metal matrix composite (MMC) surface layers reinforced by WC were fabricated on armor steel ARMOX 500T plates via a laser surface alloying process. The microstructure of the layers was assessed by scanning electron microscopy and X-ray diffraction. The surface layers having the WC fraction up to 71 [...]
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Archives of Metallurgy and Materials
2017 Vol. 62, iss. 4 2425--2431
EN Diode laser surface alloying process was used to the in-situ synthesis of TiC-reinforced composite surface layers on the ductile cast iron substrate. The obtained composite surface layers were investigated using optical and scanning electron microscopy, and XRD diffraction. It was found that the mor[...]
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Welding Technology Review
2019 R. 91, nr 5 19--25
PL Artykuł przedstawia wyniki badań nad stopowaniem laserowym żeliwa sferoidalnego ENGJS350-22 mieszaniną proszku tytanu z dodatkiem 5 %wag. wolframu. Celem procesu było uzyskanie warstwy wierzchniej o strukturze kompozytowej metodą in-situ. Proces stopowania przeprowadzony został z wykorzystaniem lase[...]
EN The article presents results of the research on laser alloying of the ductile cast iron EN-GJS 350-22 substrate with the mixture of titanium powder with addition of 5 wt.% of tungsten. The aim of the process was to obtain surface layer with the in-situ composite structure. Laser alloying process was[...]
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Archives of Materials Science and Engineering
EN Purpose: The goal of this study was to investigate effects of laser surface alloying with Si3N4 powder on the microstructural changes and properties of vacuum sintered stainless steels, both austenitic X2CrNi17-12-2, ferritic X6Cr13 and duplex X2CrNiMo22-8-2. Design/methodology/approach: High power [...]
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Archives of Materials Science and Engineering
EN Purpose: To produce erosion wear resistant and high hardness surface layers of turbofan engine blades and steam turbine blades made of titanium alloy Ti6Al4V laser gas nitrating (LGN) technology of laser alloying was selected to produce titanium nitrides participations in the titanium alloy matrix s[...]
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Archives of Materials Science and Engineering
EN Purpose: Purpose of this paper : The purpose of the study was to develop new laser alloying technology providing high erosion wear resistance of the working surfaces of blades made of titanium alloy Ti6Al4V. Design/methodology/approach: High power diode laser HPDL with a rectangular laser beam spot [...]
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Journal of Achievements in Materials and Manufacturing Engineering
EN Purpose: The purpose of this paper is to analyse the effect of laser surface alloying with chromium on the microstructural changes and properties of vacuum sintered austenitic stainless steel type AISI 316L (EN 1.4404). Design/methodology/approach: Surface modification of AISI 316L sintered austenit[...]
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Inżynieria Materiałowa
PL W referacie omówiono strukturę i własności warstwy wierzchniej (WW) stali węglowej (0,17%C) stopowanej tantalem. Zastosowano dwa rodzaje lepiszcza wiążącego proszek tantalu: nieorganiczne i organiczne. Uzyskano zmiany mikrostruktury w obszarze strefy wzbogaconej (SW), która składała się z martenzytu[...]
EN The paper describes the microstructure and properties (chemical composition, microhardness and the effect of the tribological test of the surface laser alloyed layer with tantalum. Scanning electron microscopy examinations show structure, which consist of martensite and Ta2C carbides. Samples covere[...]
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Journal of Achievements in Materials and Manufacturing Engineering
EN Purpose: of this paper was to examine the corrosion resistance of laser surface alloyed (LSA) stainless steels using electrochemical methods in 1M NaCl solution and 1M H2SO4 solution. The LSA conditions and alloying powder placement strategies on the material's corrosion resistance were evaluated. D[...]
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