Stress rupture anisotropy of a Ru-containing fourth-generation single crystal superalloy at 760 degrees C and 1100 degrees C

doi:10.1016/j.msea.2022.144006

IMR OpenIR

	Stress rupture anisotropy of a Ru-containing fourth-generation single crystal superalloy at 760 degrees C and 1100 degrees C
	Li, Y. M.1,2; Tan, Z. H.1,2; Wang, X. G.2; Mu, Y.2; Zhao, H. C.3; Tan, H. B.3; Liu, J. L.2; Wang, B.3; Li, J. G.2; Zhou, Y. Z.2; Sun, X. F.2
通讯作者	Wang, X. G.(xgwang11b@imr.ac.cn) ; Sun, X. F.(xfsun@imr.ac.cn)
	2022-10-20
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	856 页码:11
摘要	The stress rupture anisotropy of a Ru-containing fourth generation single crystal superalloy was studied at two distinct conditions of 760 degrees C/810 MPa and 1100 degrees C/165 MPa. The ruptured microstructure and deformation mechanisms of [011]- and [111]-oriented specimens are systematically investigated, and the determinants of anisotropic performance, including crystal orientation and work-hardening effect, are comprehensively examined. The results indicate that this experimental alloy exhibits strong anisotropy at the intermediate temperature and high stress because of the high dependence of deformation on Schmid factors. The low critical shearing stress for <112>{111} slip systems and limited stacking faults interaction propel the formation of continuous stacking faults in [011]-oriented specimens, thereby resulting in its worse stress rupture life at 760 degrees C/810 MPa. While the high critical stress for <112>{111} slip systems and abundant stacking faults interaction in gamma channels, which consequently contributes to the absence of superlattice stacking faults in gamma' phase, could be used to explain the superior stress rupture life of the [111]-oriented specimens at 760 degrees C/810 MPa. At high temperature and low stress, the anisotropy disparity of the experimental alloy is decreased as the deformation mechanism transforms into <110>{111} slipping and climbing. Moreover, the effects of Ru on anisotropic properties are identified by comparing it with other Ru-free SX superalloys. That is, the addition of Ru could lower stacking faults energy and encourage the formation of stacking faults in gamma channels, which would reduce the stress rupture anisotropy, especially at intermediate temperature and high stress.
关键词	Ni-based superalloys Ru Stress rupture Anisotropy Stacking faults
资助者	National Science and Technology Major Project ; National Key R & D Program of China ; Program of CAS Interdisciplinary Innovation Team and Youth Innovation Promotion Association, CAS
DOI	10.1016/j.msea.2022.144006
收录类别	SCI
语种	英语
资助项目	National Science and Technology Major Project[2017 -VI -0002-0072] ; National Key R & D Program of China[2017YFA0700704] ; Program of CAS Interdisciplinary Innovation Team and Youth Innovation Promotion Association, CAS
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:000862977400001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：19[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/321006/175619
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.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 3.Aero Engine Corp China, Inst Sichuan Gas Turbine Res, Chengdu 610500, Peoples R China
推荐引用方式 GB/T 7714	Li, Y. M.,Tan, Z. H.,Wang, X. G.,et al. Stress rupture anisotropy of a Ru-containing fourth-generation single crystal superalloy at 760 degrees C and 1100 degrees C[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2022,856:11.
APA	Li, Y. M..,Tan, Z. H..,Wang, X. G..,Mu, Y..,Zhao, H. C..,...&Sun, X. F..(2022).Stress rupture anisotropy of a Ru-containing fourth-generation single crystal superalloy at 760 degrees C and 1100 degrees C.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,856,11.
MLA	Li, Y. M.,et al."Stress rupture anisotropy of a Ru-containing fourth-generation single crystal superalloy at 760 degrees C and 1100 degrees C".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 856(2022):11.