Evolution of phase interface microstructure and its effects on stress rupture property of a 4th generation nickel-based single crystal superalloy after thermal exposure

doi:10.1016/j.msea.2023.144640

IMR OpenIR

	Evolution of phase interface microstructure and its effects on stress rupture property of a 4th generation nickel-based single crystal superalloy after thermal exposure
	Liu, Pengcheng 1,2; Liu, Xingang 1; Jiang, Xiangwei 1; Li, Hui 1; Lou, Langhong 1
通讯作者	Liu, Xingang(liuxingang@imr.ac.cn)
	2023-02-16
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	865 页码:13
摘要	Lattice constants, phase interface microstructure and stress rupture properties of nickel-based single crystal superalloy after thermally exposed at 1100 degrees C for different time were investigated using synchrotron radiation diffraction and transmission electron microscopy techniques. The results show that the lattice constants of gamma and gamma' phase at room temperature decrease and the misfit at room temperature becomes more negative after 200 h exposure, and these parameters remain unchanged after exposure for 500 h. The release of misfit stress during thermal exposure is completed by the transformation from coherent gamma/gamma' interface to semi-coherent interface as well as the formation of misfit dislocation. The misfit dislocation network generated during thermal exposure is mainly rectangular shape, and its formation process is analyzed in detail. Additionally, it is found that the stress rupture lives decrease obviously after thermal exposure, while the morphology and size of interfacial dislocation network of thermally exposed alloys after rupture are very similar with that of unexposed alloy. The relation of gamma' phase morphology and interfacial dislocation network to the stress rupture property deterioration has been discussed.
关键词	Single crystal superalloy Thermal exposure Dislocation network Misfit Phase interface Stress rupture property
资助者	Science Center for Gas Turbine Project ; Na-tional Science and Technology Major Projects of China
DOI	10.1016/j.msea.2023.144640
收录类别	SCI
语种	英语
资助项目	Science Center for Gas Turbine Project[P2021-A-IV-001-002] ; Na-tional Science and Technology Major Projects of China[2017-VI-0019-0091] ; Na-tional Science and Technology Major Projects of China[J2019-VI-0010-0124] ; Na-tional Science and Technology Major Projects of China[J2019-IV-0006-0074] ; Na-tional Science and Technology Major Projects of China[J2019-VI-0009-0123]
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:000976851700001
出版者	ELSEVIER SCIENCE SA
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/321006/177466
专题	中国科学院金属研究所
通讯作者	Liu, Xingang
作者单位	1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Liu, Pengcheng,Liu, Xingang,Jiang, Xiangwei,et al. Evolution of phase interface microstructure and its effects on stress rupture property of a 4th generation nickel-based single crystal superalloy after thermal exposure[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2023,865:13.
APA	Liu, Pengcheng,Liu, Xingang,Jiang, Xiangwei,Li, Hui,&Lou, Langhong.(2023).Evolution of phase interface microstructure and its effects on stress rupture property of a 4th generation nickel-based single crystal superalloy after thermal exposure.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,865,13.
MLA	Liu, Pengcheng,et al."Evolution of phase interface microstructure and its effects on stress rupture property of a 4th generation nickel-based single crystal superalloy after thermal exposure".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 865(2023):13.