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The influence of microtexture on the formation mechanism of nodules in Zircaloy-4 alloy tube
Zhang, Yingdong1,2; Yuan, Fusen1,2; Han, Fuzhou1,2; Ali, Muhammad1,2; Guo, Wenbin1,2; Li, Geping1; Liu, Chengze1,2; Gu, Hengfei1,3
Corresponding AuthorLi, Geping(gpli@imr.ac.cn)
2020-06-15
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume47Pages:68-75
AbstractCorrosion resistance of Zircaloy-4 alloy tube in superheated steam at 673 K/10.3 MPa is anisotropic. A part of the surface undergoes uniform corrosion while the other suffers nodular corrosion. Narrow and wide nodules are observed after an exposure period of 3 and 30 days, respectively. A new matrix transformation method is established in order to study the formation mechanism of nodules in the cross-section (CS) of Zircaloy-4 alloy tube using the EBSD technique, while the CS perpendicular to axial direction (AD). The results reveal that the microtexture is a key factor behind the two types of corrosion. Furthermore, the oxide layers grow anisotropically over the corroded surface. A thick oxide layer forms over the nodular corrosion region on the grains with c-axis oriented in the range of 40 degrees around tangential direction (TD), whereas a thin oxide layer over the uniform corrosion region is detected on the grains with c-axis oriented in the range of 68 degrees around TD. In short, the anisotropic growth of oxide layer was caused by the change of microtexture of the Zr-4 alloy tube, and this anisotropic growth of oxide layer contributed to the nodules formation. (C) 2020 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
KeywordZircaloy-4 alloy Microtexture Nodular corrosion EBSD technique Matrix transformation method
DOI10.1016/j.jmst.2020.02.010
Indexed BySCI
Language英语
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000526956900008
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/138406
Collection中国科学院金属研究所
Corresponding AuthorLi, Geping
Affiliation1.Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, 96 JinZhai Rd, Hefei 230026, Anhui, Peoples R China
3.Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Yingdong,Yuan, Fusen,Han, Fuzhou,et al. The influence of microtexture on the formation mechanism of nodules in Zircaloy-4 alloy tube[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2020,47:68-75.
APA Zhang, Yingdong.,Yuan, Fusen.,Han, Fuzhou.,Ali, Muhammad.,Guo, Wenbin.,...&Gu, Hengfei.(2020).The influence of microtexture on the formation mechanism of nodules in Zircaloy-4 alloy tube.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,47,68-75.
MLA Zhang, Yingdong,et al."The influence of microtexture on the formation mechanism of nodules in Zircaloy-4 alloy tube".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 47(2020):68-75.
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