Effect of Pt-Al bond coat on the high-cycle fatigue behaviour of a second-generation single crystal nickel-based superalloy at different temperatures

doi:10.1016/j.jmrt.2021.06.091

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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
刊名	JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
	2021-09-01
卷号	14 页码:567-581
关键词	High-cycle fatigue Pt-Al bond coat Ni-based superalloy Fracture behaviour Deformation mechanism
ISSN号	2238-7854
DOI	10.1016/j.jmrt.2021.06.091
通讯作者	Wang, X. G.(xgwang11b@imr.ac.cn) ; Zhou, Y. Z.(yzzhou@imr.ac.cn)
英文摘要	High-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.
资助项目	National 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研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000702818900003
资助机构	National 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
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/166772]
专题	金属研究所_中国科学院金属研究所
通讯作者	Wang, X. G.; Zhou, Y. Z.
作者单位	1.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
推荐引用方式 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.