Characterization of oxide dispersion strengthened ferritic steel fabricated by electron beam selective melting

doi:10.1016/j.matdes.2015.10.073

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	Characterization of oxide dispersion strengthened ferritic steel fabricated by electron beam selective melting
	Gao, Rui; Zeng, Longfei; Ding, Huili; Zhang, Tao; Wang, Xianping; Fang, Qianfeng
	2016-01-05
发表期刊	MATERIALS & DESIGN
摘要	The solid blocks and walls of the oxide dispersion strengthened (ODS) ferritic steel with nominal composition of Fe-18Cr-2W-0.5Ti-0.3Y(2)O(3) were fabricated by electron beam selective melting (EBSM) method. Processes of melting, grain morphology, tensile properties and fracture behavior of this kind of steel were characterized. It was shown that formation mechanism of columnar grains and equiaxed grains is different during the two scan strategy melting processes. The added nano-scale oxide particles evenly distributed in the molten metal, and the size of these particles did not coarsen during the rapid melting and cooling steps. The ultimate tensile strength of the annealed blocks and walls is superior to the plates with same composition consolidated by powder metallurgy. Especially, wall builds tested parallel to the columnar growth orientation exhibit the outstanding mechanical properties at high temperature owing to the grain anisotropy and uniform distribution of fine Y-rich particles. In addition, the morphology of the individual fracture surfaces demonstrates the grain structure of the cross-section and fracture mode. A certain number of nanoscopic dispersoids are retained in dimples of all the EBSM builds, leading to enhanced strengthening. (C) 2015 Elsevier Ltd. All rights reserved.
文章类型	Article
关键词	Electron Beam Melting Deposition Oxide Dispersion Strengthened Ferritic Steel Grain Morphology Microstructure Mechanical Properties
WOS标题词	Science & Technology ; Technology
DOI	10.1016/j.matdes.2015.10.073
关键词[WOS]	MECHANICAL-PROPERTIES ; TITANIUM-ALLOY ; MICROSTRUCTURE ; ODS ; EVOLUTION ; NUCLEATION ; BEHAVIOR ; POWDER ; PARAMETERS ; IRON
收录类别	SCI
语种	英语
项目资助者	National Natural Science Foundation of China(11175203 ; National Natural Science Foundation of China(11175203 ; National Natural Science Foundation of China(11175203 ; National Natural Science Foundation of China(11175203 ; National Natural Science Foundation of China(11175203 ; National Natural Science Foundation of China(11175203 ; National Natural Science Foundation of China(11175203 ; National Natural Science Foundation of China(11175203 ; 11375230) ; 11375230) ; 11375230) ; 11375230) ; 11375230) ; 11375230) ; 11375230) ; 11375230)
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000366225200133
引用统计	被引频次：27[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/22020
专题	中科院固体物理研究所
作者单位	Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Gao, Rui,Zeng, Longfei,Ding, Huili,et al. Characterization of oxide dispersion strengthened ferritic steel fabricated by electron beam selective melting[J]. MATERIALS & DESIGN,2016,89(无):1171-1180.
APA	Gao, Rui,Zeng, Longfei,Ding, Huili,Zhang, Tao,Wang, Xianping,&Fang, Qianfeng.(2016).Characterization of oxide dispersion strengthened ferritic steel fabricated by electron beam selective melting.MATERIALS & DESIGN,89(无),1171-1180.
MLA	Gao, Rui,et al."Characterization of oxide dispersion strengthened ferritic steel fabricated by electron beam selective melting".MATERIALS & DESIGN 89.无(2016):1171-1180.

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