Low cycle fatigue behavior and microstructure evolution of a fourth-generation single crystal superalloy at 800 &deg;C

doi:10.1016/j.matchar.2023.113329

IMR OpenIR

	Low cycle fatigue behavior and microstructure evolution of a fourth-generation single crystal superalloy at 800 °C
	Liang, Z. Y.1,2; Tan, Z. H.2; Zhang, C. H.1; Zhang, S.1; Tao, X. P.2; Wang, X. G.2; Jafri, S. M. Abbas 2; Shi, Z. W.3; Yang, Y. H.2; Liu, J. D.2; Liu, J. L.2; Li, J. G.2; Zhou, Y. Z.2; Sun, X. F.2
通讯作者	Zhang, C. H.(zhangch5858@126.com) ; Wang, X. G.(xgwang11b@imr.ac.cn)
	2023-11-01
发表期刊	MATERIALS CHARACTERIZATION
ISSN	1044-5803
卷号	205 页码:14
摘要	The advanced fourth-generation single crystal superalloys have great service performance at high temperature, including outstanding fatigue, creep and oxidation-resistance. Low cycle fatigue (LCF) behaviors and microstructure evolution of a fourth-generation single crystal superalloy under different strain amplitudes at 800 degrees C were investigated in this study. As the strain amplitude increased, the cyclic hardening level of the experimental superalloy increased. The crack initiation could be attributed to the exfoliation of the oxidation layers. Furthermore, within strain amplitude range of 0.65% to 1.0%, slipping bands sheared both gamma and gamma' phases. The process of super-dislocations shearing into the gamma' precipitates contributed to cyclic softening and resulted in the severe plastic deformation, thereby reducing the LCF life. Dense stacking faults (SFs) with "straight feature" and "zigzag feature" in the gamma channels were observed under strain amplitude of 0.9% and 1.0%. The continuous Lomer-Cottrell lock (L-C lock) is the strong obstacle of dislocation movement, which resulted in cyclic hardening. This investigation and the resulting experimental data serve as a valuable reference for the engineering application of the fourth-generation single crystal superalloy. The findings can provide insights into the behavior and properties of the alloy, aiding in its practical use and development in various engineering applications.
关键词	Fourth-generation Ni-base single crystal super-alloy Low cycle fatigue Cyclic hardening Dislocation configuration Deformation mechanism
资助者	National Key Research and Development Program of China ; National Science and Technology Major Project ; Excellent Youth Foundation of Liaoning Province ; Middle-aged and Youth Talents in Scientific and Technological Innovation Project of Shenyang ; Shanghai Rising-Star Program ; Youth Innovation Promotion Association, Chinese Academy of Sciences
DOI	10.1016/j.matchar.2023.113329
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2017YFA0700704] ; National Science and Technology Major Project[2017-VI-0002-0072] ; Excellent Youth Foundation of Liaoning Province[2021-YQ-02] ; Middle-aged and Youth Talents in Scientific and Technological Innovation Project of Shenyang[RC220440] ; Shanghai Rising-Star Program[20QB1406100] ; Youth Innovation Promotion Association, Chinese Academy of Sciences
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
WOS记录号	WOS:001085441500001
出版者	ELSEVIER SCIENCE INC
引用统计	被引频次：3[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/321006/177822
专题	中国科学院金属研究所
通讯作者	Zhang, C. H.; Wang, X. G.
作者单位	1.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Liaoning, Peoples R China 2.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 3.AECC Commercial Aircraft Engine Co Ltd, Dept Mat Engn, Shanghai 200241, Peoples R China
推荐引用方式 GB/T 7714	Liang, Z. Y.,Tan, Z. H.,Zhang, C. H.,et al. Low cycle fatigue behavior and microstructure evolution of a fourth-generation single crystal superalloy at 800 °C[J]. MATERIALS CHARACTERIZATION,2023,205:14.
APA	Liang, Z. Y..,Tan, Z. H..,Zhang, C. H..,Zhang, S..,Tao, X. P..,...&Sun, X. F..(2023).Low cycle fatigue behavior and microstructure evolution of a fourth-generation single crystal superalloy at 800 °C.MATERIALS CHARACTERIZATION,205,14.
MLA	Liang, Z. Y.,et al."Low cycle fatigue behavior and microstructure evolution of a fourth-generation single crystal superalloy at 800 °C".MATERIALS CHARACTERIZATION 205(2023):14.