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

文献类型：期刊论文

作者Chen, Shuai1; Jiang, Zhizhong2; Huang, Jihua1; Yang, Jian1; Ye, Zheng1
刊名NUCLEAR MATERIALS AND ENERGY
出版日期2022-09-01
卷号32
关键词Activated sintering Spark plasma sintering Tungsten Solid solution Mechanical properties
DOI10.1016/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.
WOS关键词MECHANICAL-PROPERTIES ; BEHAVIOR ; DENSIFICATION ; RESISTANCE ; STRENGTH
资助项目National Magnetic Confinement Fusion Program of China[2018YFE0312200]
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
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).

入库方式： OAI收割

来源：合肥物质科学研究院

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