Effect of Ru on ?/?? microstructural evolutions and precipitation of TCP phases during thermal exposure at 1100?C in a single crystal superalloy

doi:10.1016/j.matchar.2022.111794

IMR OpenIR

	Effect of Ru on ?/?? microstructural evolutions and precipitation of TCP phases during thermal exposure at 1100?C in a single crystal superalloy
	Sun, Jingxia 1,2; Liu, Jinlai 2; Chen, Chao 1,2; Li, Jinguo 2; Wang, Xinguang 1; Sun, Xiaofeng 2
通讯作者	Liu, Jinlai(jlliu@imr.ac.cn) ; Li, Jinguo(jgli@imr.ac.cn)
	2022-04-01
发表期刊	MATERIALS CHARACTERIZATION
ISSN	1044-5803
卷号	186 页码:9
摘要	The effect of 2 wt% Ru on gamma/gamma' microstructural evolutions and precipitation of TCP phases were investigated in two experimental alloys. The two alloys were subjected to unstressed thermal exposure at temperatures of 1100 degrees C for periods of 100, 500 and 1000 h. The microstructures of the samples before and after thermal exposures were characterized. Directional coarsening of gamma' phases and the precipitation of TCP phases were observed in the both alloys after long-term exposure. The experimental results show that Ru has a very significant effect on the suppression of TCP phases by influences the partitioning of elements. Detailed analysis showed that Ru increases the lattice misfit strain, resulting in more dense and stable interfacial dislocation networks, which can promote the stability of gamma/gamma' microstructures by delaying topological inversion. Ledges and grooves at gamma/gamma' interfaces associated with the dislocations and strong segregations of Cr, Co and Re along the dislocation networks were both observed, under which a detailed explanation of the coarsening process during thermal exposure was given.
关键词	Microstructure Single crystal superalloy Thermal exposure TCP phase
资助者	National Science and Technology Major Project ; National Key Research and Development Program of China ; National Natural Science Foundation of China
DOI	10.1016/j.matchar.2022.111794
收录类别	SCI
语种	英语
资助项目	National Science and Technology Major Project[2017-VI-0002-0072] ; National Key Research and Development Program of China[2017YFA0700704] ; National Natural Science Foundation of China[51971214]
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:000808715800001
出版者	ELSEVIER SCIENCE INC
引用统计	被引频次：17[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/321006/174426
专题	中国科学院金属研究所
通讯作者	Liu, Jinlai; Li, Jinguo
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.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	Sun, Jingxia,Liu, Jinlai,Chen, Chao,et al. Effect of Ru on ?/?? microstructural evolutions and precipitation of TCP phases during thermal exposure at 1100?C in a single crystal superalloy[J]. MATERIALS CHARACTERIZATION,2022,186:9.
APA	Sun, Jingxia,Liu, Jinlai,Chen, Chao,Li, Jinguo,Wang, Xinguang,&Sun, Xiaofeng.(2022).Effect of Ru on ?/?? microstructural evolutions and precipitation of TCP phases during thermal exposure at 1100?C in a single crystal superalloy.MATERIALS CHARACTERIZATION,186,9.
MLA	Sun, Jingxia,et al."Effect of Ru on ?/?? microstructural evolutions and precipitation of TCP phases during thermal exposure at 1100?C in a single crystal superalloy".MATERIALS CHARACTERIZATION 186(2022):9.