Fabrication of a turbine disk alloy by electron beam sheet lamination and investigation on the improved high temperature creep performance

doi:10.1016/j?mst.2022.10.013

IMR OpenIR

	Fabrication of a turbine disk alloy by electron beam sheet lamination and investigation on the improved high temperature creep performance
	You, Xiaogang 1; Tan, Yi 1; Takeyama, Masao 2; Li, Pengting 1; Li, Yi 1; Zhang, Huixing 1; Cui, Hongyang 1; Cui, Chuanyong 3; Wang, Yinong 1; Li, Jiayan 1; Zhang, Zhijun 4; Dong, Gengyi 1; Xiao, Wenjia 5
通讯作者	Tan, Yi(tanyi@dlut.edu.cn) ; Li, Pengting(ptli@dlut.edu.cn)
	2023-04-20
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	143 页码:216-233
摘要	A turbine disk alloy was prepared by electron beam sheet lamination (EBSL), giving a refined microstruc-ture and high purity, and the microstructure-property relationship of this alloy has been developed. The alloy showed an outstanding creep life of 1266.3 h at 953 K/500 MPa. Compared with the conventional vacuum induction melted and vacuum arc re-melted alloy, a smaller dendrite arm spacing of less than 23 mu m was obtained through the EBSL method, which restricted the formation of large inter-dendritic carbides. As a result, the typical intergranular failure mode was observed in the EBSL alloy, whereas the transgranular fracture mode was dominant in the conventional alloy. The inter-dendritic MC carbides formed from the reverse diffusion of Nb are believed to either impede grain boundary sliding or initi-ate cracks, depending on their size and morphology. The tiny grain boundary precipitates of the 8 phase in the EBSL alloy could reduce the critical stress for microvoid nucleation to 161.07 MPa by decoher-ing the particle/matrix interface, or allowing vacancy condensation near the 8 interface, resulting in the formation of grain boundary microcracks. In the conventional alloy, however, the larger-sized MC car-bides which were formed during the solidification process (0.36 vol.%) nucleated the microcracks within the particles, leading to the transgranular fracture. Furthermore, the results indicated that the nanoscale gamma' and gamma'' precipitates contributed primarily to strengthening and coordinating intragranular deforma-tion during creep, in which the Orowan mechanism and shearing of a /6 < 211 > partial dislocations and a /2 < 110 > doublets were active for gamma' and gamma'' precipitates, respectively.(c) 2022 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
关键词	Electron beam Superalloy Segregation Deformation Precipitation
资助者	National Key R&D Program of China ; National Natural Science Foundation of China ; Doctoral Start -up Foundation of Liaoning Province ; Support Plan for Innovation Teams in Key Areas of Dalian
DOI	10.1016/j?mst.2022.10.013
收录类别	SCI
语种	英语
资助项目	National Key R&D Program of China[2019YFA0705300] ; National Natural Science Foundation of China[52004051] ; Doctoral Start -up Foundation of Liaoning Province[2021-BS-069] ; Support Plan for Innovation Teams in Key Areas of Dalian[2019RT13]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000913332300002
出版者	JOURNAL MATER SCI TECHNOL
引用统计	被引频次：3[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/321006/175170
专题	中国科学院金属研究所
通讯作者	Tan, Yi; Li, Pengting
作者单位	1.Dalian Univ Technol, Sch Mat Sci & Engn, Key Lab Mat Modificat Laser Ion & Electron Beams, Minist Educ, Dalian 116024, Peoples R China 2.Tokyo Inst Technol, Sch Mat & Chem Technol, Dept Mat Sci & Engn, Tokyo, Japan 3.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 4.Univ British Columbia, Dept Mat Engn, Vancouver, BC, Canada 5.Foshan Univ, Sch Mechatron Engn & Automat, Foshan 528225, Peoples R China
推荐引用方式 GB/T 7714	You, Xiaogang,Tan, Yi,Takeyama, Masao,et al. Fabrication of a turbine disk alloy by electron beam sheet lamination and investigation on the improved high temperature creep performance[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2023,143:216-233.
APA	You, Xiaogang.,Tan, Yi.,Takeyama, Masao.,Li, Pengting.,Li, Yi.,...&Xiao, Wenjia.(2023).Fabrication of a turbine disk alloy by electron beam sheet lamination and investigation on the improved high temperature creep performance.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,143,216-233.
MLA	You, Xiaogang,et al."Fabrication of a turbine disk alloy by electron beam sheet lamination and investigation on the improved high temperature creep performance".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 143(2023):216-233.