Pad Welding of Inconel 625 Layer on Structural Steel Used in the Power Industry

Władysław Osuch; Grzegorz Michta; Adam Kruk

doi:10.4028/www.scientific.net/SSP.231.107

Paper Titles

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TEM Investigations of the Microstructure of 7CrMoVTiB10-10 Steel Weld Metal
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Pad Welding of Inconel 625 Layer on Structural Steel Used in the Power Industry
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Electron Microscopy Investigation of Inconel 625 Weld Overlay on Boiler Steel
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The Microstructure of Weld Overlay Ni-Base Alloy Deposited on Carbon Steel by CMT Method
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Application of Scanning Electron Microscopy and EDS Microanalysis for Microstructural Investigation of Hypoeutectoid Steel
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Microstructural Investigations of Cracks in Turbine Wheels in Car Engine Turbochargers
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HomeSolid State PhenomenaSolid State Phenomena Vol. 231Pad Welding of Inconel 625 Layer on Structural...

Pad Welding of Inconel 625 Layer on Structural Steel Used in the Power Industry

Abstract:

Due to aggressive gases produced during combustion process of biomass, some elements of the power boiler should be covered with a material that possesses very high corrosion resistance (e.g. Inconel 625). This paper presents results of microstructural studies of Inconel 625 padding weld on waterwall elements (made of 13CrMo4-5 steel) for steam boiler designed for biomass combustion. The microstructural studies were carried out using Scanning- as well as Transmission Electron Microscopy methods. The padded weld layer exhibited dendritic structure. In the weld layer γ phase with an increased dislocation density and stacking faults was observed. In the base material (13CrMo4-5 steel) titanium nitrides, complex carbides and Laves phase enriched in niobium were observed.

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Periodical:

Solid State Phenomena (Volume 231)

Pages:

107-112

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.231.107

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Online since:

June 2015

Authors:

Władysław Osuch, Grzegorz Michta, Adam Kruk*

Keywords:

13CrMo4-5 Steel, Biomass Combustion, Inconel 625 Alloy, Pad Welding, Power Boiler, SEM, TEM

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