Co content dependence on the microstructure characteristic and creep performance at elevated temperature in Ru-containing single crystal superalloys

doi:10.1016/j.msea.2021.141906

IMR OpenIR

	Co content dependence on the microstructure characteristic and creep performance at elevated temperature in Ru-containing single crystal superalloys
	Tan, Z. H.1,2; Wang, X. G.1; Cheng, Y.1; Li, Y. M.1; Yang, Y. H.1; Liu, J. L.1; Liu, J. D.1; Li, J. G.1; Zhou, Y. Z.1; Sun, X. F.1
通讯作者	Wang, X. G.(xgwang11b@imr.ac.cn) ; Sun, X. F.(xfsun@imr.ac.cn)
	2021-09-21
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	825 页码:12
摘要	The composition design and optimization of Ru-containing fourth generation single crystal superalloys, which are currently considered as the most advanced and practical materials for manufacturing high-pressure turbine blades of aero-engines, have been in increasing and urgent demands. In this work, significant adjustments to the pivotal alloying element Co were made and the synthetic effect of Co on the microstructure as well as hightemperature creep property in Ru-containing alloys were systematically evaluated. The results illustrated that the size of gamma ' phase was inversely proportional to the Co content but the volume fraction of gamma ' precipitates stayed the same in different alloys. The TCP phases were more likely to precipitate in alloys with lower or extremely high Co addition during long-term aging, while the morphology of these particles transformed from long needlelike to short rod-like or blocky as Co content increased. It was noted that the element diffusion as well as the resultant coarsening and rafting of gamma/gamma ' structures were favorably facilitated by the increasing Co addition. The alloy with 12 wt% Co exhibited the longest stress rupture life at 1140 degrees C/137 MPa, regardless of the moderate precipitation of blocky TCP particles during creep. Moreover, the TCP phases in different alloys were analyzed to be typical mu phase but the specific element distributions varied with Co addition. Moreover, plenty of 2nd gamma ' precipitates were observed after creep rupture, while their nucleation and precipitation could be affected by the Co addition in alloys. Ultimately, the comprehensive Co-effect was discussed and the optimum Co content was determined, in order to provide further guidance in the design and development of Ru-containing single crystal superalloys.
关键词	Ru-containing single crystal superalloys Co Creep property Microstructural stability Precipitates
资助者	National Science and Technology Major Project ; Innovation Academy for Light-duty Gas Turbine, Chinese Academy of Sciences ; National Key R&D Program of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences
DOI	10.1016/j.msea.2021.141906
收录类别	SCI
语种	英语
资助项目	National Science and Technology Major Project[2017-VI-0002-0072] ; National Science and Technology Major Project[2017-VI-0003-0073] ; Innovation Academy for Light-duty Gas Turbine, Chinese Academy of Sciences[CXYJJ20-MS-03] ; National Key R&D Program of China[2017YFA0700704] ; Youth Innovation Promotion Association, Chinese Academy of Sciences
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000695929500001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：15[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/166998
专题	中国科学院金属研究所
通讯作者	Wang, X. G.; Sun, X. F.
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, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Tan, Z. H.,Wang, X. G.,Cheng, Y.,et al. Co content dependence on the microstructure characteristic and creep performance at elevated temperature in Ru-containing single crystal superalloys[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2021,825:12.
APA	Tan, Z. H..,Wang, X. G..,Cheng, Y..,Li, Y. M..,Yang, Y. H..,...&Sun, X. F..(2021).Co content dependence on the microstructure characteristic and creep performance at elevated temperature in Ru-containing single crystal superalloys.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,825,12.
MLA	Tan, Z. H.,et al."Co content dependence on the microstructure characteristic and creep performance at elevated temperature in Ru-containing single crystal superalloys".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 825(2021):12.