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Microstructure and composition evolution of a single-crystal superalloy caused by elements interdiffusion with an overlay NiCrAlY coating on oxidation
Yang, Lanlan1; Chen, Minghui2; Wang, Jinlong2; Qiao, Yanxin1; Guo, Pingyi1; Zhu, Shenglong3; Wang, Fuhui2
Corresponding AuthorChen, Minghui(mhchen@mail.neu.edu.cn)
2020-05-15
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume45Pages:49-58
AbstractMCrAlY (M=Ni and/or Co) overlay coating is widely used as a protective coating against high temperature oxidation and corrosion. However, due to its big difference in chemical composition with the underlying superalloy, elements interdiffusion occurs inevitably. One of the direct results is the formation of interdiffusion zone (IDZ) and secondary reaction zone (SRZ) with a high density of fine topological closed-packed phases (TCPs), weakening dramatically the mechanical properties of the alloy substrate. It is by now the main problem of modern high-temperature metallic coatings, but there are still hardly any reports studying the formation, growth and transformation of IDZ and SRZ in deep, as well as the precipitation of TCPs. In this work, a typical NiCrAlY coating is deposited by arc ion plating on a single-crystal superalloy N5. Elements interdiffusion between them and its relationship on microstructure were clarified. Cr rather than Al from the coating diffuses into the alloy at high temperatures and segregates immediately beneath their interface, contributing largely to the formation of IDZ. Simultaneously, diffusion of Ni from the deep alloy to IDZ leads to the formation and continuous expansion of SRZ. (C) 2020 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
KeywordSingle-crystal superalloys NiCrAlY coating High-temperature oxidation Arc ion plating Elements interdiffusion Microstructure
Funding OrganizationNational Natural Science Foundation of China ; Ministry of Industry and Information Technology Project
DOI10.1016/j.jmst.2019.11.017
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51671053] ; National Natural Science Foundation of China[51801021] ; Ministry of Industry and Information Technology Project[MJ-2017-J-99]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000526956200006
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Cited Times:27[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/138541
Collection中国科学院金属研究所
Corresponding AuthorChen, Minghui
Affiliation1.Jiangsu Univ Sci & Technol, Sch Mat Sci & Engn, Zhenjiang 212003, Jiangsu, Peoples R China
2.Northeastern Univ, Shenyang Natl Lab Mat Sci, Shenyang 110819, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Yang, Lanlan,Chen, Minghui,Wang, Jinlong,et al. Microstructure and composition evolution of a single-crystal superalloy caused by elements interdiffusion with an overlay NiCrAlY coating on oxidation[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2020,45:49-58.
APA Yang, Lanlan.,Chen, Minghui.,Wang, Jinlong.,Qiao, Yanxin.,Guo, Pingyi.,...&Wang, Fuhui.(2020).Microstructure and composition evolution of a single-crystal superalloy caused by elements interdiffusion with an overlay NiCrAlY coating on oxidation.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,45,49-58.
MLA Yang, Lanlan,et al."Microstructure and composition evolution of a single-crystal superalloy caused by elements interdiffusion with an overlay NiCrAlY coating on oxidation".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 45(2020):49-58.
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