Precipitation and phase transformation mechanism of additive manufactured Ni-Co base superalloy

doi:10.1016/j.matchar.2019.03.015

IMR OpenIR

	Precipitation and phase transformation mechanism of additive manufactured Ni-Co base superalloy
	Tang, Ling 1,2; Liang, Jingjing 1,3; Cui, Chuanyong 1; Li, Jinguo 1,3; Zhou, Yizhou 1; Sun, Xiaofeng 1; Ding, Yutian 4
通讯作者	Cui, Chuanyong(chycui@imr.ac.cn)
	2019-05-01
发表期刊	MATERIALS CHARACTERIZATION
ISSN	1044-5803
卷号	151 页码:252-259
摘要	Microstructures of a newly developed Ni-Co base superalloy with different contents of Co manufactured by additive manufacturing (AM) have been investigated using optical microscopy (OM), scanning electron microscopy (SEM), transmission electron microscopy (TEM). The results show that, the Ni-Co base superalloy made by AM presents a columnar microstructure. This columnar microstructure is achieved through epitaxial growth of fine parallel dendrites from a substrate. eta phase and gamma' phase precipitate during the deposition process. After heat treatments, there are primary gamma', secondary gamma' and tertiary gamma' precipitated. The heat treatments also promote the precipitation of eta phase. The inductively coupled plasma atomic emission spectroscopy (ICP-AES) investigation shows that the loss and segregation of elements can account for the formation of eta phase. The results also indicate that the addition of Co promotes the precipitation of gamma' and impedes the precipitation of eta phase. Electron probe microanalyser (EPMA) results show that increasing of Co content decreases the segregation of Ti in the heat-treated state and is beneficial for decreasing the precipitation of eta phase. TEM analysis confirms that the phase transformation mechanism is mainly the reordering of atoms and the formation of stacking faults.
关键词	Additive manufacturing Ni-Co base superalloy eta phase Element loss
资助者	National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National High-tech R&D Program (863 Program) ; State Key Laboratory of Solidification Processing in NWPU
DOI	10.1016/j.matchar.2019.03.015
收录类别	SCI
语种	英语
资助项目	National Key R&D Program of China[2018YFB1106600] ; National Key R&D Program of China[2017YFA0700703] ; National Key R&D Program of China[2018YFB1106000] ; National Natural Science Foundation of China (NSFC)[51771190] ; National Natural Science Foundation of China (NSFC)[51671189] ; National Natural Science Foundation of China (NSFC)[U1508213] ; National High-tech R&D Program (863 Program)[2014AA041701] ; State Key Laboratory of Solidification Processing in NWPU[SKLSP201834]
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:000467668600028
出版者	ELSEVIER SCIENCE INC
引用统计	被引频次：19[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/321006/133318
专题	中国科学院金属研究所
通讯作者	Cui, Chuanyong
作者单位	1.Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, 96 Jinzhai Rd, Hefei 230026, Anhui, Peoples R China 3.Space Mfg Technol CAS Key Lab, Beijing 100094, Peoples R China 4.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, 287 Langongping Rd, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Tang, Ling,Liang, Jingjing,Cui, Chuanyong,et al. Precipitation and phase transformation mechanism of additive manufactured Ni-Co base superalloy[J]. MATERIALS CHARACTERIZATION,2019,151:252-259.
APA	Tang, Ling.,Liang, Jingjing.,Cui, Chuanyong.,Li, Jinguo.,Zhou, Yizhou.,...&Ding, Yutian.(2019).Precipitation and phase transformation mechanism of additive manufactured Ni-Co base superalloy.MATERIALS CHARACTERIZATION,151,252-259.
MLA	Tang, Ling,et al."Precipitation and phase transformation mechanism of additive manufactured Ni-Co base superalloy".MATERIALS CHARACTERIZATION 151(2019):252-259.