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

CORC > 金属研究所 > 中国科学院金属研究所

	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 1; Chen, Chao 1,2; Li, Jinguo 1; Wang, Xinguang 2; Sun, Xiaofeng 1
刊名	MATERIALS CHARACTERIZATION
	2022-04-01
卷号	186 页码:9
关键词	Microstructure Single crystal superalloy Thermal exposure TCP phase
ISSN号	1044-5803
DOI	10.1016/j.matchar.2022.111794
通讯作者	Liu, Jinlai(jlliu@imr.ac.cn) ; Li, Jinguo(jgli@imr.ac.cn)
英文摘要	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.
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
语种	英语
出版者	ELSEVIER SCIENCE INC
WOS记录号	WOS:000808715800001
资助机构	National Science and Technology Major Project ; National Key Research and Development Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/174425]
专题	金属研究所_中国科学院金属研究所
通讯作者	Liu, Jinlai; Li, Jinguo
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	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.