文献类型：期刊文献

英文题名：Interfacial Cracking Failure Mechanism of Chromium-Coated Zircaloy Cladding for ATF Materials

作者：Li, Xinfeng[1,2];Liu, Yang[1];Cui, Yan[3];Hui, Jun[4,5];Fu, Jianxun[2];Zhang, Jin[6]

机构：[1]Sun Yat Sen Univ, Sino French Inst Nucl Engn & Technol, Zhuhai 519082, Peoples R China;[2]Shanghai Univ, Ctr Adv Solidificat Technol, Sch Mat Sci & Engn, State Key Lab Adv Special Steel, Shanghai 200444, Peoples R China;[3]East China Univ Sci & Technol, Inst Fine Chem, Key Lab Adv Mat & Feringa Nobel Prize Scientist Jo, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[4]Dongguan Univ Technol, Res Inst Interdisciplinary Sci, Sch Mat Sci & Engn, Dongguan 523808, Peoples R China;[5]Dongguan Univ Technol, Sch Mat Sci & Engn, Dongguan 523808, Peoples R China;[6]Beijing Normal Univ, Fac Arts & Sci, Zhuhai 519087, Peoples R China

年份：2025

卷号：15

期号：2

外文期刊名：METALS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001430208800001)】；

基金：The authors acknowledge support by National Natural Science Foundation of China (No.12104057), Guangdong Basic and Applied Basic Research Foundation (2023A1515240074), Open Project of State Key Laboratory of Advanced Special Steel, Shanghai Key Laboratory of Advanced Ferrometallurgy, Shanghai University (SKLASS 2023-09) and the Science and Technology Commission of Shanghai Municipality (No.19DZ2270200).

语种：英文

外文关键词：Cr coating; interlayer; interfacial cracking; cladding tube; tensile test

摘要：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.