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Residual stresses of explosively welded bimetal studied by hard X-ray diffraction

DOI: 10.1016/j.prostr.2022.12.240 DOI Help

Authors: Zuzana Molčanová (Institute of Materials Research, Slovak Academy of Sciences) , Beáta Ballóková (Institute of Materials Research, Slovak Academy of Sciences) , Katarína Kušnírová (Institute of Materials Research, Slovak Academy of Sciences) , Lenka Oroszová Oroszová (Institute of Materials Research, Slovak Academy of Sciences) , Michael Gloc (Warsaw University of Technology) , Łukasz Ciupiński (Warsaw University of Technology) , Karel Saksl (Technical University of Košice; Institute of Materials Research, Slovak Academy of Sciences)
Co-authored by industrial partner: No

Type: Conference Paper
Conference: 10th International Conference on Materials Structure and Micromechanics of Fracture
Peer Reviewed: No

State: Published (Approved)
Published: January 2023

Open Access Open Access

Abstract: Geothermal heat from the Earth`s crust is a source of natural and renewable energy. This energy can be extracted and used for generating electricity and heating of houses in the winter months. However, in order to extract energy from a well, we need to use material that can sustain contact with geothermal steam and is resistant to corrosion of the geothermal fluid and non-condensing gases such as hydrogen sulfide (H2S) and carbon dioxide (CO2), chloride ions (Cl−), and hydrogen fluoride (HF). An interesting alternative to today's materials are bimetals, composed of two different materials where the layer in contact with the aggressive environment is made of a noble material, while the outer layer (typically low-carbon steel) strengthens the composite and additionally provides good weldability. This paper presents the microstructure, phase composition, and distribution of residual stresses of the bimetallic system nickel-chromium-molybdenum alloy (Alloy 625) cladded on the ferritic pressure vessel steel P355NH base material. The bimetal has been prepared by explosion welding and is its use is geared for transport of highly corrosive media and as a material for heat exchangers, condensers, etc.

Journal Keywords: bimetal; Alloy 625; P355NH; explosion welding; stress analysis; XRD2

Diamond Keywords: Alloys; Welding

Subject Areas: Materials, Engineering

Instruments: I15-Extreme Conditions

Added On: 17/01/2023 08:54


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Materials Engineering & Processes Materials Science Engineering & Technology Metallurgy

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