Oxidation and Mechanical Behavior of Cr-Coated Laser Beam Welds Made from E110 Zirconium Alloy

This article describes the oxidation resistance of laser beam welds made from E110 zirconium alloy with a chromium coating obtained using multi-cathode magnetron sputtering. Oxidation tests of the welded Zr alloy without and with Cr coating were performed in an air atmosphere at 1100 °C for 2–90 min...

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Bibliographic Details
Published in:Coatings (Basel) 2022-11, Vol.12 (11), p.1623
Main Authors: Kashkarov, E. B., Gusev, K. S., Ashikhmin, D. A., Abdulmenova, A. V., Sidelev, D. V.
Format: Article
Language:English
Subjects:
Alloys
Analysis
Cathode sputtering
Chromium
Coatings
Composition
Corrosion resistance
Etching
High temperature
Laser beam welding
Lasers
Magnetron sputtering
Materials
Mechanical properties
Nuclear power plants
Optical microscopy
Oxidation
Oxidation resistance
Oxidation tests
Oxidation-reduction reaction
Protective coatings
Zirconium alloys
Zirconium base alloys
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Summary:This article describes the oxidation resistance of laser beam welds made from E110 zirconium alloy with a chromium coating obtained using multi-cathode magnetron sputtering. Oxidation tests of the welded Zr alloy without and with Cr coating were performed in an air atmosphere at 1100 °C for 2–90 min. Then, analysis of their cross-section microstructure in different regions (weld, heat-affected, and bulk zones) was done using optical microscopy. Hardness measurements and three-point bending tests demonstrated the hardening of the Cr-coated welded Zr alloy after the oxidation that is discussed in the article. Brittle fracture behavior was observed for uncoated Zr weld even after a short period of high-temperature oxidation.
ISSN:2079-6412
2079-6412
DOI:10.3390/coatings12111623