Microstructural evolution of NiCoCrAlY coated directionally solidified superalloy

doi:10.1016/j.surfcoat.2022.128487

CORC > 金属研究所 > 中国科学院金属研究所

	Microstructural evolution of NiCoCrAlY coated directionally solidified superalloy
	Zhan, Xin 2,3; Wang, Dong 2; Ge, Zhicheng 2,3; Zhang, Yingjian 1; Dong, Jiasheng 2; Lou, Langhong 2; Zhang, Jian 2
刊名	SURFACE & COATINGS TECHNOLOGY
	2022-06-25
卷号	440 页码:13
关键词	NiCoCrAlY coating Secondary reaction zone Microstructure evolution Superalloy Arc ion plating High-temperature exposure Interdiffusion
ISSN号	0257-8972
DOI	10.1016/j.surfcoat.2022.128487
通讯作者	Wang, Dong(dwang@imr.ac.cn)
英文摘要	The microstructure evolution of the interdiffusion zone (IDZ), secondary reaction zone (SRZ), and substrate diffusion zone (SDZ) formed beneath the coating/substrate interface in a directionally solidified (DS) nickelbased superalloy during thermal exposure has been investigated. Recrystallization occurred in the substrate below the coating at both 900 degrees C and 1000 degrees C. However, significant differences in the evolution of the SRZ and topologically close-packed (TCP) phases were observed at 900 degrees C and 1000 degrees C. Numerous rode-like a phases precipitated in the gamma'-based cellular recrystallization (CR) zone at 900 degrees C for 100 h. In contrast, after 100 h at 1000 degrees C, a continuous gamma layer was formed in the IDZ and moderate amounts of needle-like a precipitates were found in the SDZ. Furthermore, after thermal exposure for 1000 h at 900 degrees C, the rod-like a-phases within the SRZ gradually dissolved with substantial precipitation of M23C6, and the number of needle-like a-phases increased and grew in size. Nevertheless, after exposure at 1000 degrees C for 1000 h, the SRZ was completely consumed by the IDZ and the needle-like a phases in the SDZ were incorporated with the gamma layer and dissolved progressively.
资助项目	National Science and Technology Major Project[J2019-IV-0006-0074] ; National Natural Science Foundation of China[52071219] ; Science Center for Gas Turbine Project[P2021-A-IV-001-002]
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000800002400002
资助机构	National Science and Technology Major Project ; National Natural Science Foundation of China ; Science Center for Gas Turbine Project
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/174164]
专题	金属研究所_中国科学院金属研究所
通讯作者	Wang, Dong
作者单位	1.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Superalloys Div, Shenyang 110016, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Zhan, Xin,Wang, Dong,Ge, Zhicheng,et al. Microstructural evolution of NiCoCrAlY coated directionally solidified superalloy[J]. SURFACE & COATINGS TECHNOLOGY,2022,440:13.
APA	Zhan, Xin.,Wang, Dong.,Ge, Zhicheng.,Zhang, Yingjian.,Dong, Jiasheng.,...&Zhang, Jian.(2022).Microstructural evolution of NiCoCrAlY coated directionally solidified superalloy.SURFACE & COATINGS TECHNOLOGY,440,13.
MLA	Zhan, Xin,et al."Microstructural evolution of NiCoCrAlY coated directionally solidified superalloy".SURFACE & COATINGS TECHNOLOGY 440(2022):13.