Interfacial Cracking Failure Mechanism of Chromium-Coated Zircaloy Cladding for ATF Materials
In this study, the interfacial cracking mechanism of Cr-coated Zircaloy cladding tubes was investigated through a combination of tensile testing, advanced microstructural characterization, and first-principle calculations. The results demonstrate the presence of an interlayer (33 nm) between the Cr...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-02-01
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| Series: | Metals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-4701/15/2/179 |
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| Summary: | In this study, the interfacial cracking mechanism of Cr-coated Zircaloy cladding tubes was investigated through a combination of tensile testing, advanced microstructural characterization, and first-principle calculations. The results demonstrate the presence of an interlayer (33 nm) between the Cr coating and the Zr substrate, which consists of Cr and O elements. In comparison with the coherent Cr/interlayer interface, the incoherent interlayer/Zr interface is conducive to crack initiation and propagation, resulting from local high strain concentration generated by incompatible deformation between the interlayer and Zr substrate, and O-induced reductions in Cr/Zr interfacial cohesive strength. |
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| ISSN: | 2075-4701 |