Microstructure and tensile properties of dual structure superalloys at intermediate temperatures

doi:10.1016/j.msea.2019.02.012

IMR OpenIR

	Microstructure and tensile properties of dual structure superalloys at intermediate temperatures
	Li, Xiangwei 1,2; Dong, Jiasheng 1; Wang, Li 1; Lou, Langhong 1; Zhang, Jian 1
通讯作者	Wang, Li(wangli@imr.ac.cn)
	2019-03-28
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	751 页码:15-22
摘要	The microstructure and tensile properties of dual structure superalloys were investigated. Dual structure superalloys are directionally solidified into fine grains and columnar grains with aid of seeds technique. In the transition zone coarse grains and pseudo columnar grains are observed. MC carbides evolve from blocky to script-like and volume fraction of micro-pores decreases during transition from fine grains to columnar grains. The ultimate tensile strength of dual structure superalloys is slightly lower than that of the base superalloys with only fine grains or columnar grains in the present experiment, but reduction of ductility of the dual structure superalloys is not observed. The deformation and fracture behaviors of dual structure superalloys are analyzed based on the grain rotation and surface deformation morphologies.
关键词	Superalloys Tensile properties Dual structure Fine grain Columnar grain
资助者	National Natural Science Foundation of China
DOI	10.1016/j.msea.2019.02.012
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51701220] ; National Natural Science Foundation of China[51631008] ; National Natural Science Foundation of China[51671196] ; National Natural Science Foundation of China[51871210]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000463128800003
出版者	ELSEVIER SCIENCE SA
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/321006/132683
专题	中国科学院金属研究所
通讯作者	Wang, Li
作者单位	1.Chinese Acad Sci, Inst Met Res, Superalloys Div, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Li, Xiangwei,Dong, Jiasheng,Wang, Li,et al. Microstructure and tensile properties of dual structure superalloys at intermediate temperatures[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2019,751:15-22.
APA	Li, Xiangwei,Dong, Jiasheng,Wang, Li,Lou, Langhong,&Zhang, Jian.(2019).Microstructure and tensile properties of dual structure superalloys at intermediate temperatures.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,751,15-22.
MLA	Li, Xiangwei,et al."Microstructure and tensile properties of dual structure superalloys at intermediate temperatures".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 751(2019):15-22.