Journal ArticleDOI
Spark plasma sintering of tungsten-yttrium oxide composites from chemically synthesized nanopowders and microstructural characterization
Mazher Ahmed Yar,Sverker Wahlberg,Hans Bergqvist,Hanadi G. Salem,Mats Johnsson,Mamoun Muhammed +5 more
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TLDR
Nano-crystalline W-1%Y(2)O(3) (wt.%) powder was produced by a modified solution chemical reaction of ammonium paratungstate (APT) and yttrium nitrate as discussed by the authors.About:
This article is published in Journal of Nuclear Materials.The article was published on 2011-05-15. It has received 109 citations till now. The article focuses on the topics: Ammonium paratungstate & Yttrium.read more
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Methods for improving ductility of tungsten - A review
Chai Ren,Zhigang Zak Fang,Mark Koopman,Brady G. Butler,James D. Paramore,James D. Paramore,Scott Middlemas +6 more
TL;DR: In this paper, a critical review of the methods that have been reported in the literature for improving the ductility of tungsten in order to understand the critical factors that control the ductile (or lack thereof) in Tungsten.
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Powder Metallurgy Processing of a W x TaTiVCr High-Entropy Alloy and Its Derivative Alloys for Fusion Material Applications
Owais Ahmed Waseem,Ho Jin Ryu +1 more
TL;DR: This study explored the potential of powder metallurgy processing for the fabrication of a high-entropy alloy and other derived compositions with enhanced hardness and strength through sintering of reduced-activation alloys for fusion plasma-facing materials.
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W–2 wt.%Y2O3 composite: Microstructure and mechanical properties
TL;DR: In this paper, the microstructure of the obtained composite was investigated using light microscopy, scanning electron microscopy and transmission electron microscope using 3-point bend test, which showed that the composite starts to show ductile behavior approximately at 400 degrees C and the bending stress continuously decreases from 200 degrees C to 1000 degrees C. The hardness of the composite was found to be 4.9 GPa at 10 N load.
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Nanostructured yttria dispersion-strengthened tungsten synthesized by sol–gel method
R. Liu,Z.M. Xie,Z.M. Xie,Qianfeng Fang,Qianfeng Fang,T. Zhang,Xianping Wang,T. Hao,Chao Liu,Y. Dai +9 more
TL;DR: Yttria dispersion-strengthened tungsten with both enhanced strength and ductility was synthesized through sol-gel method followed by sintering and high-temperature swaging.
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Microwave synthesis and properties of fine-grained oxides dispersion strengthened tungsten
TL;DR: In this paper, it was found that the addition of Y2O3 nano-particles could significantly hinder the grain growth of tungsten in the consolidation process, decreasing the average grain size from 3.2μm in pure W down to 0.7μm.
References
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Accumulation and recovery of defects in ion-irradiated nanocrystalline gold
TL;DR: In this article, the effects of 60 MeV 12 C ion irradiation on nanocrystalline gold (nano-Au) were studied and the experimental results showed that the irradiation-produced defects in nano-AU are thermally unstable because of the existence of a large volume fraction of grain boundaries.
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Instability of irradiation induced defects in nanostructured materials
TL;DR: In this article, the defect evolution in nanocrystalline Pd and ZrO2 during energetic particle irradiation is examined with emphasis on the correlation of defect density to the grain size.
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Impact of irradiation on the microstructure of nanocrystalline materials
N. Nita,R Schaeublin,M. Victoria +2 more
TL;DR: In this article, annealing experiments have been performed to assess the change in grain size induced by irradiation, and experimentally showing the resistance of nanostructured material to radiation damage.
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Fabrication of high temperature oxides dispersion strengthened tungsten composites by spark plasma sintering process
TL;DR: In this article, the fabrication process of high temperature oxides, such as Y 2 O 3, HfO 2 and La 2 o 3, dispersed tungsten composites by spark plasma sintering was described.
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Development of ultra-fine grained W–(0.25–0.8)wt%TiC and its superior resistance to neutron and 3 MeV He-ion irradiations
Hiroaki Kurishita,Sengo Kobayashi,Kiyomichi Nakai,T. Ogawa,Akira Hasegawa,K. Abe,H. Arakawa,S. Matsuo,T. Takida,K. Takebe,Masayoshi Kawai,N. Yoshida +11 more
TL;DR: In this article, the authors used mechanical alloying (MA) in different gas atmospheres of H 2, Ar and N 2 and hot isostatic pressing to construct W-TiC with equiaxed grain sizes of 50-200nm and nearly full density of 99%.