Phase precipitation behavior and tensile properties of as-cast Ni-based superalloy during heat treatment

doi:10.1016/S1003-6326(18)64817-4

IMR OpenIR

	Phase precipitation behavior and tensile properties of as-cast Ni-based superalloy during heat treatment
	Gao, Shuang 1,2; Hou, Jie-shan 1; Guo, Yong-an 1; Zhou, Lan-zhang 1
通讯作者	Hou, Jie-shan(jshou@imr.ac.cn)
	2018-09-01
发表期刊	TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
ISSN	1003-6326
卷号	28 期号:9 页码:1735-1744
摘要	The phase precipitation behavior and tensile properties of an as-cast Ni-based alloy, IN617B alloy, after solution heat treatment and long-term aging treatment were investigated. Ti(C,N), M6C and M23C6 are the primary precipitates in as-cast microstructure. After solution heat treatment, most of carbides dissolve into the matrix except a few fine Ti(C,N) within grains. During long-term aging at 700 degrees C, the phase precipitation behaviors of the alloy are characterized as follows: (1) M23C6 carbides at grain boundaries (GBs) transform from film-like shape to cellular shape and gradually coarsen due to the decrease of the surface energy and element aggregation to GBs; (2) M23C6 carbides within grains have a bar-like morphology with a preferential growth direction [110] and have a cube-on-cube coherent orientation relationship with the matrix gamma; (3) gamma' particles inhibit the coarsening of M23C6 within grains by constraining the diffusion of formation elements. Furthermore, the tensile strength of the alloy obviously increases, but the ductility significantly decreases after the aging for 5000 h. The alloy has a relatively stable microstructure which guarantees the excellent tensile properties during long-term aging.
关键词	Ni-based superalloy phase precipitation carbide gamma' phase tensile properties
资助者	National Natural Science Foundation of China ; National Energy Administration Program of China
DOI	10.1016/S1003-6326(18)64817-4
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51571191] ; National Energy Administration Program of China[NY 20150102]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000446870200006
出版者	ELSEVIER SCIENCE BV
引用统计	被引频次：20[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/321006/129774
专题	中国科学院金属研究所
通讯作者	Hou, Jie-shan
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Gao, Shuang,Hou, Jie-shan,Guo, Yong-an,et al. Phase precipitation behavior and tensile properties of as-cast Ni-based superalloy during heat treatment[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2018,28(9):1735-1744.
APA	Gao, Shuang,Hou, Jie-shan,Guo, Yong-an,&Zhou, Lan-zhang.(2018).Phase precipitation behavior and tensile properties of as-cast Ni-based superalloy during heat treatment.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,28(9),1735-1744.
MLA	Gao, Shuang,et al."Phase precipitation behavior and tensile properties of as-cast Ni-based superalloy during heat treatment".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 28.9(2018):1735-1744.