Activated sintering effect of Fe element on tungsten via spark plasma sintering

doi:10.1016/j.nme.2022.101226

	Activated sintering effect of Fe element on tungsten via spark plasma sintering
	Chen, Shuai 1; Jiang, Zhizhong 2; Huang, Jihua 1; Yang, Jian 1; Ye, Zheng 1
刊名	NUCLEAR MATERIALS AND ENERGY
	2022-09-01
卷号	32
关键词	Activated sintering Spark plasma sintering Tungsten Solid solution Mechanical properties
DOI	10.1016/j.nme.2022.101226
通讯作者	Jiang, Zhizhong(zhizhong.jiang@inest.cas.cn) ; Huang, Jihua(jhhuang62@sina.com)
英文摘要	Full-densely activated sintered W(Fe) was prepared by spark plasma sintering technique. The effects of Fe content (0 similar to 1.0%(wt.%)) on relative density, microstructure and mechanical properties were discussed. The mechanisms of solution strengthening effect and grain boundary strengthening effect of Fe addition were revealed by calculating dislocation energy and vacancy formation energy. The results indicated that the relative density and the grain size were the Exponential function and the Boltzmann function of Fe contents, respectively. Full-dense W(Fe) could be obtained with >= 0.75 %Fe added. The W(Fe) microstructure consisted completely of solid solution. The microhardness was monotonically increased due to the increase of relative density with Fe content increased, while the flexural strength and fracture toughness showed a nonmonotonic trend depending on the interaction of relative density and grain size. Specifically, the mechanical properties were all increased accompanied by the appearance of the typical transgranular fracture and a novel micro-area transgranular fracture with Fe content increased from 0.75% to 1.0%. The increases in mechanical properties were attributed to the combined action of the solution strengthening effect and grain boundary strengthening effect. The decreases of the dislocation energy and vacancy formation energy led to the increases of the deformation resistance and grain bonding strength, respectively, which resulted in the strengthening and toughening effects.
资助项目	National Magnetic Confinement Fusion Program of China[2018YFE0312200]
WOS关键词	MECHANICAL-PROPERTIES ; BEHAVIOR ; DENSIFICATION ; RESISTANCE ; STRENGTH
WOS研究方向	Nuclear Science & Technology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000862586000002
资助机构	National Magnetic Confinement Fusion Program of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/129183]
专题	中国科学院合肥物质科学研究院
通讯作者	Jiang, Zhizhong; Huang, Jihua
作者单位	1.Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Nucl Energy Safety Technol, Hefei Inst Phys Sci, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Chen, Shuai,Jiang, Zhizhong,Huang, Jihua,et al. Activated sintering effect of Fe element on tungsten via spark plasma sintering[J]. NUCLEAR MATERIALS AND ENERGY,2022,32.
APA	Chen, Shuai,Jiang, Zhizhong,Huang, Jihua,Yang, Jian,&Ye, Zheng.(2022).Activated sintering effect of Fe element on tungsten via spark plasma sintering.NUCLEAR MATERIALS AND ENERGY,32.
MLA	Chen, Shuai,et al."Activated sintering effect of Fe element on tungsten via spark plasma sintering".NUCLEAR MATERIALS AND ENERGY 32(2022).