Recrystallization During Thermo-Mechanical Fatigue of Two High-Generation Ni-Based Single Crystal Superalloys

doi:10.11900/0412.1961.2023.00173

IMR OpenIR

	Recrystallization During Thermo-Mechanical Fatigue of Two High-Generation Ni-Based Single Crystal Superalloys
	Zhao, Peng 1,2; Xie, Guang 3; Duan, Huichao 1; Zhang, Jian 3; Du, Kui 1
通讯作者	Du, Kui(kuidu@imr.ac.cn)
	2023-09-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	59 期号:9 页码:1221-1229
摘要	Ni-based single crystal superalloys are widely used for turbine engine blades because of their excellent high-temperature mechanical properties. Thermo-mechanical fatigue (TMF) is a complex deformation process that combines strain and temperature effects. This process is also considered as a deformation method related to the working conditions of aviation turbine blades. Therefore, understanding the deformation mechanism of materials undergoing TMF is important for extending the service life of aviation turbine blades. Here, third-generation and fourth-generation single crystal superalloys that experienced TMF deformation are investigated by SEM and TEM, including aberration-corrected STEM. The results show the formation of deformation twins on different {111} planes of the single crystal superalloys. In addition, a large number of recrystallized grains are found in parallel twin lamellae or around the intersection of twin lamellae. The grain boundary of recrystallized grains is primarily composed of twin boundaries, low-angle grain boundaries, and large-angle grain boundaries generated by twin intersections. Furthermore, the twinning boundaries after deformation are analyzed using aberration-corrected TEM. Consequently, the process of twinning-induced dynamic recrystallization is comprehensively understood, which improved the TMF fracture mechanism of single crystal high-temperature alloys. These results improve the understanding of the deformation mechanism of single crystal superalloys under service conditions.
关键词	Ni-based single crystal superalloy thermo-mechanical fatigue (TMF) aberration-corrected transmission electron microscope twin recrystallization
资助者	National Natural Science Foundation of China ; National Science and Technology Major Project
DOI	10.11900/0412.1961.2023.00173
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[91960202] ; National Natural Science Foundation of China[52171020] ; National Natural Science Foundation of China[51901229] ; National Natural Science Foundation of China[51911530154] ; National Natural Science Foundation of China[91860201] ; National Natural Science Foundation of China[52271042] ; National Science and Technology Major Project
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001059082200011
出版者	SCIENCE PRESS
引用统计	被引频次：6[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/321006/179368
专题	中国科学院金属研究所
通讯作者	Du, Kui
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.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	Zhao, Peng,Xie, Guang,Duan, Huichao,et al. Recrystallization During Thermo-Mechanical Fatigue of Two High-Generation Ni-Based Single Crystal Superalloys[J]. ACTA METALLURGICA SINICA,2023,59(9):1221-1229.
APA	Zhao, Peng,Xie, Guang,Duan, Huichao,Zhang, Jian,&Du, Kui.(2023).Recrystallization During Thermo-Mechanical Fatigue of Two High-Generation Ni-Based Single Crystal Superalloys.ACTA METALLURGICA SINICA,59(9),1221-1229.
MLA	Zhao, Peng,et al."Recrystallization During Thermo-Mechanical Fatigue of Two High-Generation Ni-Based Single Crystal Superalloys".ACTA METALLURGICA SINICA 59.9(2023):1221-1229.