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  4. 中科院固体物理研究所
Effect of hot rolling and annealing on the mechanical properties and thermal conductivity of W-0.5 wt.% TaC alloys

文献类型：期刊论文

作者Miao, S.1,2; Xie, Z. M.1,2; Yang, X. D.1,2; Liu, R.1,2; Gao, R.1,2; Zhang, T.1,2,3; Wang, X. P.1,2; Fang, Q. F.1,2; Liu, C. S.1,2; Luo, G. N.4
刊名INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
出版日期2016-04-01
卷号56期号:无页码:8-17
关键词W-tac Alloys Hot Rolling And Annealing Mechanic Properties Thermal Conductivity
DOI10.1016/j.ijrmhm.2015.12.004
文献子类Article
英文摘要The mechanical properties and thermal conductivity of W-0.5 wt.% TaC alloys prepared by spark plasma sintering as well as ordinary sintering followed by hot rolling and annealing treatment, respectively, were investigated. Tensile tests indicate that below 600 degrees C there is no tensile plastic deformation while at 700 degrees C the total elongation of spark plasma sintered (SPSed) W-0.5 wt.% TaC is up to 36%, which is about 3.3 times that of spark plasma sintered W samples. In contrast, the tensile strength and total elongation of rolled W-0.5 wt% TaC are 717 MPa and 10.7% at 250 degrees C, respectively. The ductile-brittle transition temperature (DBTT) of rolled W-0.5 wt% TaC is between 200 degrees C and 250 degrees C, about 300 degrees C lower than that of spark plasma sintered W-0.5 wt.% TaC (similar to 600 degrees C). Annealing decreases the DBTT (similar to 200 degrees C) and improves thermal conductivity from 175 to 186 W/m.K at room temperature. Microstructure analyses indicates that TaC could purify and strengthen grain boundaries by capturing impurity oxygen in tungsten to form Ta2O5. The results indicate that strength, ductility and thermal conductivity can be improved by purifying, hot rolling and subsequent annealing. (C) 2015 Elsevier Ltd. All rights reserved.
WOS关键词PLASMA-FACING MATERIALS ; HELIUM-COOLED DIVERTOR ; TUNGSTEN
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:000371187700002
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源URL[http://ir.hfcas.ac.cn:8080/handle/334002/22049]  
专题合肥物质科学研究院_中科院固体物理研究所
合肥物质科学研究院_中科院等离子体物理研究所
作者单位1.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China
2.Univ Sci & Technol China, Hefei 230026, Peoples R China
3.Chinese Acad Sci, Hefei Sci Ctr, Hefei, Peoples R China
4.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
5.Southwestern Inst Phys, Chengdu, Peoples R China
推荐引用方式
GB/T 7714		 Miao, S.,Xie, Z. M.,Yang, X. D.,et al. Effect of hot rolling and annealing on the mechanical properties and thermal conductivity of W-0.5 wt.% TaC alloys[J]. INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS,2016,56(无):8-17.
APA Miao, S..,Xie, Z. M..,Yang, X. D..,Liu, R..,Gao, R..,...&Lian, Y. Y..(2016).Effect of hot rolling and annealing on the mechanical properties and thermal conductivity of W-0.5 wt.% TaC alloys.INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS,56(无),8-17.
MLA Miao, S.,et al."Effect of hot rolling and annealing on the mechanical properties and thermal conductivity of W-0.5 wt.% TaC alloys".INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS 56.无(2016):8-17.

入库方式： OAI收割

来源：合肥物质科学研究院

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