Temperature dependence on tensile deformation mechanisms in a novel Nickel-based single crystal superalloy

doi:10.1016/j.msea.2020.138997

IMR OpenIR

	Temperature dependence on tensile deformation mechanisms in a novel Nickel-based single crystal superalloy
	Tan, Z. H.1,2; Wang, X. G.1; Du, Y. L.1; Duan, T. F.3; Yang, Y. H.1; Liu, J. L.1; Liu, J. D.1; Yang, L.2; Li, J. G.1; Zhou, Y. Z.1; Sun, X. F.1
通讯作者	Wang, X. G.(xgwang11b@imr.ac.cn) ; Zhou, Y. Z.(yzzhou@imr.ac.cn) ; Sun, X. F.(xfsun@imr.ac.cn)
	2020-03-03
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	776 页码:10
摘要	The affordability has become a key element in the development of the modern aero-engines thus the design and research of low-cost single crystal superalloys are in great demand. A kind of novel Nickel-based single crystal superalloy with cost reduction was designed in this work and the temperature dependence on the microstructure modification as well as corresponding deformation mechanisms during tensile tests were systematically investigated. The experimental alloy exhibited a remarkable yield strength of 912 MPa but relatively poor ductility at 760 degrees C. At higher temperatures, an overt strain softening occurred before the tensile rupture and the fracture features were identified as dimples induced by the accumulated micro-pores. The stacking faults shearing mechanism prevailed at room temperature and there presented two types of stacking faults in the gamma' precipitates. Both decomposition and cross-slip of the a/2 <101> superdislocadon were observed at 760 degrees C while the deformation mechanism was controlled by APB-coupled dislocation pairs shearing the gamma' phase at 980 degrees C. With temperature increasing to 1100 degrees C and 1120 degrees C, the amount of shearing dislocation pairs decreased dramatically, besides, the interfacial dislocation networks and rafted gamma/gamma' structures were formed. The degradation of mechanical properties was considerably slight from 1100 degrees C to 1120 degrees C, however, three primary microstructure modifications were emphasized.
关键词	Single crystal superalloy Tensile property Fracture characteristic Stacking fault Deformation mechanism
资助者	National Key R&D Program of China ; National Science and Technology Major Project ; Natural Science Foundation of Liaoning Province ; National Natural Science Foundation of China (NSFC) ; State Key Lab of Advanced Metals and Materials Open Fund ; Youth Innovation Promotion Association, Chinese Academy of Sciences
DOI	10.1016/j.msea.2020.138997
收录类别	SCI
语种	英语
资助项目	National Key R&D Program of China[2017YFA0700704] ; National Science and Technology Major Project[2017-VI-0002-0072] ; Natural Science Foundation of Liaoning Province[20170520038] ; National Natural Science Foundation of China (NSFC)[51601192] ; National Natural Science Foundation of China (NSFC)[51671188] ; State Key Lab of Advanced Metals and Materials Open Fund[2018-Z07] ; 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:000517665100006
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：37[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/321006/137363
专题	中国科学院金属研究所
通讯作者	Wang, X. G.; Zhou, Y. Z.; Sun, X. F.
作者单位	1.Chinese Acad Sci, Inst Met Res, Superalloys Div, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Shenyang Univ Technol, Sch Mat Sci & Engn, 111 Shenliao Rd, Shenyang 110870, Peoples R China 3.Liaoning Res Inst Light Ind, 3 Chongshan Rd, Shenyang 110030, Peoples R China
推荐引用方式 GB/T 7714	Tan, Z. H.,Wang, X. G.,Du, Y. L.,et al. Temperature dependence on tensile deformation mechanisms in a novel Nickel-based single crystal superalloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2020,776:10.
APA	Tan, Z. H..,Wang, X. G..,Du, Y. L..,Duan, T. F..,Yang, Y. H..,...&Sun, X. F..(2020).Temperature dependence on tensile deformation mechanisms in a novel Nickel-based single crystal superalloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,776,10.
MLA	Tan, Z. H.,et al."Temperature dependence on tensile deformation mechanisms in a novel Nickel-based single crystal superalloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 776(2020):10.