Creep anisotropy of a low-cost third generation single crystal superalloy at 760 °C and 1120 °C

doi:10.1016/j.msea.2024.147632

IMR OpenIR

	Creep anisotropy of a low-cost third generation single crystal superalloy at 760 °C and 1120 °C
	Guan, Q. Y.1,2; Li, Y. M.2; Wang, X. G.2; Chu, Z. K.2; Tan, Z. H.2; Liang, Z. Y.1,2; Tao, X. P.2; Yang, Y. H.2; Liu, J. L.2; Liu, J. D.2; Zhang, C. H.1; Zhang, S.1; Li, J. G.2; Zhou, Y. Z.2; Sun, X. F.2
通讯作者	Wang, X. G.(xgwang11b@imr.ac.cn) ; Tan, Z. H.(zhtan20b@imr.ac.cn) ; Zhang, C. H.(zhangch5858@126.com)
	2025-02-01
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	922 页码:15
摘要	This research investigated the anisotropy of creep properties of a low-cost third-generation Nickel-based single crystal superalloy under two conditions of 760 degrees C/800 MPa and 1120 degrees C/137 MPa. The microstructures and deformation mechanisms of the [011] and [111]-oriented specimens were studied in depth and the determinants of anisotropy were analyzed. The low critical resolved shearing stress and the single activation of the <112> {111} slip system synergistically led to the formation of tremendous continuous stacking faults in the [011]oriented specimen, which resulted in its extremely poor creep life under condition of intermediate temperature and high stress. In contrast, high critical resolved shearing stress of <112> {111} slip systems led to the formation of a large number of microtwins in the [111]-oriented specimen. The microtwins dispersed in the gamma' phase could well hinder the movement of dislocations and produce a favorable work-hardening effect, which led to the excellent creep life of the [111]-oriented specimens under condition of intermediate temperature and high stress. Under the condition of high temperature and low stress, the deformation mechanism was transformed to the dislocations slipping on the <110> {111} slip system and climbing. At this point, the anisotropy of the two oriented specimens was significantly weakened. Importantly, the creep behavior was compared with that of other SX superalloys, a specific reason for the anisotropy under the condition of intermediate temperature and high stress was proposed. That was [111]-oriented specimens exhibited significant orientation sensitive to forming microtwins, which induced the different creep anisotropy in this low-cost [111]-oriented Nickel-based single crystal alloy.
关键词	Nickel-based single crystal superalloys Low cost Creep properties Anisotropy Microtwins
资助者	Middle-aged and Youth Talents in Scientific and Technological Innovation Project of Shenyang ; Excellent Natural Science Fund Project of Liaon-ing Province ; Youth Foundation of Liaoning Province
DOI	10.1016/j.msea.2024.147632
收录类别	SCI
语种	英语
资助项目	Middle-aged and Youth Talents in Scientific and Technological Innovation Project of Shenyang[RC220440] ; Excellent Natural Science Fund Project of Liaon-ing Province[2023-BS-186] ; Youth Foundation of Liaoning Province[2021-YQ-02]
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:001376648600001
出版者	ELSEVIER SCIENCE SA
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/181490
专题	中国科学院金属研究所
通讯作者	Wang, X. G.; Tan, Z. H.; Zhang, C. H.
作者单位	1.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Liaoning, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Guan, Q. Y.,Li, Y. M.,Wang, X. G.,et al. Creep anisotropy of a low-cost third generation single crystal superalloy at 760 °C and 1120 °C[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2025,922:15.
APA	Guan, Q. Y..,Li, Y. M..,Wang, X. G..,Chu, Z. K..,Tan, Z. H..,...&Sun, X. F..(2025).Creep anisotropy of a low-cost third generation single crystal superalloy at 760 °C and 1120 °C.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,922,15.
MLA	Guan, Q. Y.,et al."Creep anisotropy of a low-cost third generation single crystal superalloy at 760 °C and 1120 °C".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 922(2025):15.