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Effect of Pt-Al bond coat on the high-cycle fatigue behaviour of a second-generation single crystal nickel-based superalloy at different temperatures
Tao, X. P.1,2; Wang, X. G.1; Zhou, Y. Z.1; Tan, K. J.1,2; Meng, J.1; Liang, J. J.1; Yang, Y. H.1; Liu, J. L.1; Liu, J. D.1; Li, J. G.1; Sun, X. F.1
Corresponding AuthorWang, X. G.(xgwang11b@imr.ac.cn) ; Zhou, Y. Z.(yzzhou@imr.ac.cn)
2021-09-01
Source PublicationJOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
ISSN2238-7854
Volume14Pages:567-581
AbstractHigh-cycle fatigue tests of Pt-Al bond coated and bare single crystal superalloys were conducted at 700 degrees C and 800 degrees C, aiming at investigating the effect of bond coat on the high-cycle fatigue properties of a single crystal superalloy. The impact of bond coat was studied merely on the tensile and creep properties of this superalloy, but was not found on the high-cycle fatigue behavior of this alloy. The experimental results showed that the bond coat was found to be beneficial at 800 degrees C or under low stresses at 700 degrees C owing to the fact that cracks were retarded by the fine grains in the IDZ, the P-type rafted gamma' phases in the substrate or the coat/substrate interface, respectively. However, the bond coat was detrimental under high stresses at 700 degrees C owing to the rapid propagation of the early cracking and the brittle nature of bond coat. Moreover, EBSD results showed the all bond coat cracks mainly initiated at the surface of the coated specimens and started from grains with {123} 111 010 superdislocation with two segments of compact core was observed in the rafted gamma' phases. (C) 2021 The Author(s). Published by Elsevier B.V.
KeywordHigh-cycle fatigue Pt-Al bond coat Ni-based superalloy Fracture behaviour Deformation mechanism
Funding OrganizationNational Key R&D Program of China ; National Science and Technology Major Project ; Innovation Academy for Light-duty Gas Turbine, Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC) ; Youth Innovation Promotion Association, Chinese Academy of Sciences
DOI10.1016/j.jmrt.2021.06.091
Indexed BySCI
Language英语
Funding ProjectNational Key R&D Program of China[2017YFA0700704] ; National Science and Technology Major Project[2017-VI-0002-0072] ; Innovation Academy for Light-duty Gas Turbine, Chinese Academy of Sciences[CXYJJ20-MS-03] ; National Natural Science Foundation of China (NSFC)[51701210] ; National Natural Science Foundation of China (NSFC)[51671188] ; Youth Innovation Promotion Association, Chinese Academy of Sciences
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000702818900003
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/166773
Collection中国科学院金属研究所
Corresponding AuthorWang, X. G.; Zhou, Y. Z.
Affiliation1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Tao, X. P.,Wang, X. G.,Zhou, Y. Z.,et al. Effect of Pt-Al bond coat on the high-cycle fatigue behaviour of a second-generation single crystal nickel-based superalloy at different temperatures[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2021,14:567-581.
APA Tao, X. P..,Wang, X. G..,Zhou, Y. Z..,Tan, K. J..,Meng, J..,...&Sun, X. F..(2021).Effect of Pt-Al bond coat on the high-cycle fatigue behaviour of a second-generation single crystal nickel-based superalloy at different temperatures.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,14,567-581.
MLA Tao, X. P.,et al."Effect of Pt-Al bond coat on the high-cycle fatigue behaviour of a second-generation single crystal nickel-based superalloy at different temperatures".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 14(2021):567-581.
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