Microstructural Evolution of a High W Content Ni-Based Superalloy at gamma ' Sub-Solvus Temperatures

doi:10.1007/s12540-022-01216-6

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	Microstructural Evolution of a High W Content Ni-Based Superalloy at gamma ' Sub-Solvus Temperatures
	Zhou, Sigeng 1,2; Sheng, Naicheng 2; Sun, Shijie 2; Fan, Shigang 2; Yu, Jinjiang 2; Hou, Guichen 2; Li, Jinguo 2; Zhou, Yizhou 2; Sun, Xiaofeng 2
刊名	METALS AND MATERIALS INTERNATIONAL
	2022-06-07
页码	11
关键词	Ni-based superalloy gamma ' coarsening gamma/gamma ' eutectic Globularization
ISSN号	1598-9623
DOI	10.1007/s12540-022-01216-6
通讯作者	Sheng, Naicheng(ncsheng@imr.ac.cn)
英文摘要	The evolution of gamma' phase and gamma/gamma' eutectic during short-time heat treatment of the Ni-based superalloy with high W content, K416B are investigated. In this study, high temperature Differential Scanning Calorimetry (DSC) is employed to design the heat treatment experiments and the precipitate temperature of secondary gamma' is found in the cooling curve. The standard coarsening model is applied to figure out the coarsening rate constant of gamma' precipitate. On this basis, a novel method is proposed to predict the globularization time of gamma phase in gamma/gamma' eutectic during the heat treatment process. As holding temperature increases, more gamma lamellae convert to platelets before reaching thermodynamic equilibrium. Electron microscopy observations exhibit the boundary splitting and necking formation on the y plate surface. Moreover, the dissolution kinetics of gamma phase is quantitatively assessed by JMAK model. The volume fraction descends rapidly in the initial stage, and then reach to a threshold. Above proposed approaches are validated via various heat treatment experiments.
资助项目	National Natural Science Foundation of Liao Ning Province[2020-MS-014] ; Innovation Academy for Light-duty Gas Turbine, Chinese Academy of Sciences[CXYJJ20-N-02] ; Chinese Academy of Sciences
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	KOREAN INST METALS MATERIALS
WOS记录号	WOS:000807339500001
资助机构	National Natural Science Foundation of Liao Ning Province ; Innovation Academy for Light-duty Gas Turbine, Chinese Academy of Sciences ; Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/174281]
专题	金属研究所_中国科学院金属研究所
通讯作者	Sheng, Naicheng
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Sigeng,Sheng, Naicheng,Sun, Shijie,et al. Microstructural Evolution of a High W Content Ni-Based Superalloy at gamma ' Sub-Solvus Temperatures[J]. METALS AND MATERIALS INTERNATIONAL,2022:11.
APA	Zhou, Sigeng.,Sheng, Naicheng.,Sun, Shijie.,Fan, Shigang.,Yu, Jinjiang.,...&Sun, Xiaofeng.(2022).Microstructural Evolution of a High W Content Ni-Based Superalloy at gamma ' Sub-Solvus Temperatures.METALS AND MATERIALS INTERNATIONAL,11.
MLA	Zhou, Sigeng,et al."Microstructural Evolution of a High W Content Ni-Based Superalloy at gamma ' Sub-Solvus Temperatures".METALS AND MATERIALS INTERNATIONAL (2022):11.