Influence of Ru on the thermomechanical fatigue deformation behavior of a single crystal superalloy

doi:10.1016/j.ijfatigue.2021.106634

CORC > 金属研究所 > 中国科学院金属研究所

	Influence of Ru on the thermomechanical fatigue deformation behavior of a single crystal superalloy
	Ge, Zhicheng 1,2; Xie, Guang 2; Segersall, Mikael 3; Norman, Viktor 3; Chen, Zhe 4; Moverare, Johan 3; Lou, Langhong 2; Zhang, Jian 2
刊名	INTERNATIONAL JOURNAL OF FATIGUE
	2022-03-01
卷号	156 页码:10
关键词	Nickel-base superalloy Single crystal Thermomechanical fatigue Ru Twinning
ISSN号	0142-1123
DOI	10.1016/j.ijfatigue.2021.106634
通讯作者	Xie, Guang(gxie@imr.ac.cn) ; Moverare, Johan(johan.moverare@liu.se)
英文摘要	The deformation mechanisms of a single crystal nickel-base superalloy with and without Ru-doped have been investigated under out-of-phase thermomechanical fatigue. The Ru-doped alloy exhibits a thermomechanical fatigue life more than twice as high compared to the Ru-free alloy and a difference in thermomechanical fatigue behavior is also displayed. Microstructure studies by scanning electron microscopy and transmission electron microscopy revealed that the deformation mechanism of the Ru-free alloy in the initial stage is the movement of dislocations in the gamma matrix. In the later stage of the thermomechanical fatigue test, large amounts of twins are formed in the material, and a large number of stacking faults and dislocations are sheared into the gamma' precipitates. By comparing with the Ru-free alloy, the Ru-doped alloy has a higher matrix strength due to the solid solution strengthening effect of Ru, and is also prone to different deformation mechanisms. For example, the stacking faults are formed in the initial thermomechanical fatigue cycles and remain in the matrix throughout the entire thermomechanical fatigue process. The formation of twins, on the other hand, is suppressed by Ru addition. Such effects are believed to extend the thermomechanical fatigue life effectively.
资助项目	National Natural Science Foundation of China[51771204] ; National Natural Science Foundation of China[U1732131] ; National Natural Science Foundation of China[51911530154] ; National Natural Science Foundation of China[51631008] ; National Natural Science Foundation of China[91860201] ; National Science and Technology Major Project[J2019-VI-0010] ; Swedish foundation for international cooperation in research and higher education (STINT)[CH2018-7851]
WOS研究方向	Engineering ; Materials Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000789656100001
资助机构	National Natural Science Foundation of China ; National Science and Technology Major Project ; Swedish foundation for international cooperation in research and higher education (STINT)
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/172497]
专题	金属研究所_中国科学院金属研究所
通讯作者	Xie, Guang; Moverare, Johan
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Superalloys Div, Shenyang 110016, Peoples R China 3.Linkoping Univ, Dept Management & Engn, Div Engn Mat, SE-58183 Linkoping, Sweden 4.Siemens Energy AB, SE-61231 Finspang, Sweden
推荐引用方式 GB/T 7714	Ge, Zhicheng,Xie, Guang,Segersall, Mikael,et al. Influence of Ru on the thermomechanical fatigue deformation behavior of a single crystal superalloy[J]. INTERNATIONAL JOURNAL OF FATIGUE,2022,156:10.
APA	Ge, Zhicheng.,Xie, Guang.,Segersall, Mikael.,Norman, Viktor.,Chen, Zhe.,...&Zhang, Jian.(2022).Influence of Ru on the thermomechanical fatigue deformation behavior of a single crystal superalloy.INTERNATIONAL JOURNAL OF FATIGUE,156,10.
MLA	Ge, Zhicheng,et al."Influence of Ru on the thermomechanical fatigue deformation behavior of a single crystal superalloy".INTERNATIONAL JOURNAL OF FATIGUE 156(2022):10.