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Archives of Metallurgy and Materials

Tytuł artykułu

The Erosion Resistance and Microstructure Evaluation of Laser Surface Alloyed Sintered Stainless Steels

Autorzy Brytan, Z. 
Treść / Zawartość
Warianty tytułu
Języki publikacji EN
EN The sintered stainless steels of different microstructures (austenitic, ferritic and duplex) were laser surface alloyed with hard powders (SiC, Si3N4) and elemental alloying powders (Cr, FeCr, FeNi) to obtain a complex steel microstructure of improved properties. Laser surface alloying (LSA) involved different strategies of powder placing: the direct powder feeding to the molten metal pool and filling grooves machined on the sample surface by powder, and then laser surface melting. Obtained microstructures were characterised and summarised, basing on LOM, SEM and XRD analysis. The links between base material properties, like superficial hardness and microhardness, derived microstructures and erosion resistance was described. The LSA conditions and alloying powder placement strategies on erosion resistance was evaluated. The erosion wear is lower for Cr, FeCr, FeNi laser alloying, where powders were dissolved in the steel microstructure, and hard phases were not precipitated. Precipitations of hard phases (carbides, silicides, martensite formation) reduce erosion resistance of SiC alloyed stainless steel. The LSA with Si3N4works better due to lack of precipitates and formation of a soft and ductile austenitic microstructure. The erosion wear at the impingement angle of 90° is high for hard and therefore brittle surface layers obtained as a result of alloying by hard particles (SiC, Si3N4). The softer and ductile austenitic stainless steel resist better than harder ferritic and duplex stainless steel material at studied erodent im pingement angle.
Słowa kluczowe
EN sintered stainless steel   duplex   laser surface alloying   erosion resistance  
Wydawca Polish Academy of Sciences, Committee of Metallurgy, Institute of Metallurgy and Materials Science
Czasopismo Archives of Metallurgy and Materials
Rocznik 2018
Tom Vol. 63, iss. 4
Strony 2039--2049
Opis fizyczny Bibliogr. 28 poz., fot., rys., tab., wykr.
autor Brytan, Z.
  • Silesian University of Technology, Faculty of Mechanical Engineering, Institute of Engineering Materials and Biomaterials, 18a Konarskiego Str., 44-100 Gliwice, Poland,
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EN This publication was financed by the Ministry of Science and Higher education of Poland as the statutory financial grant of the Faculty of Mechanical Engineering SUT.
Kolekcja BazTech
Identyfikator YADDA bwmeta1.element.baztech-8e5edfae-ee9a-424a-8d86-1247fae0ceb2
DOI 10.24425/amm.2018.125141