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

doi:10.1016/j.matchar.2019.03.015

CORC > 兰州理工大学 > 兰州理工大学 > 省部共建有色金属先进加工与再利用国家重点实验室

	Precipitation and phase transformation mechanism of additive manufactured Ni-Co base superalloy
	Tang, Ling 1,4; Liang, Jingjing 1,2; Cui, Chuanyong 1; Li, Jinguo 1,2; Zhou, Yizhou 1; Sun, Xiaofeng 1; Ding, Yutian 3
刊名	MATERIALS CHARACTERIZATION
	2019-05
卷号	151 页码:252-259
关键词	Additive manufacturing Ni-Co base superalloy eta phase Element loss
ISSN号	1044-5803
DOI	10.1016/j.matchar.2019.03.015
英文摘要	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.
资助项目	State Key Laboratory of Solidification Processing in NWPU[SKLSP201834]
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:000467668600028
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/31931]
专题	省部共建有色金属先进加工与再利用国家重点实验室
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.Space Mfg Technol CAS Key Lab, Beijing 100094, Peoples R China 3.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, 287 Langongping Rd, Lanzhou 730000, Gansu, Peoples R China 4.Univ Sci & Technol China, Sch Mat Sci & Engn, 96 Jinzhai Rd, Hefei 230026, Anhui, 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.