Thermal shock behavior of fine grained W–Y 2 O 3  materials fabricated via two different manufacturing technologies

Zhao, Mi; Zhou, Zhangjian; Zhong, Minlin; Tan, Jieqing; Lian, Youyun; Liu, Xiang

doi:10.1016/j.jnucmat.2015.12.042

Cited by 68 publications

(23 citation statements)

References 34 publications

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“…Wang et al [18,28] nm in size as raw material. However, the large adsorption effect of nanosized oxide particles leads to forming particle aggregations even after ball-milling for 30 hours [31]. Similar cases can be found in references [32][33][34].…”

Section: Microstructure Of Alloysupporting

confidence: 72%

Uniform nanosized oxide particles dispersion strengthened tungsten alloy fabricated involving hydrothermal method and hot isostatic pressing

Xiao

Miao

Wei

et al. 2020

Journal of Alloys and Compounds

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Section: Microstructure Of Alloysupporting

confidence: 72%

Uniform nanosized oxide particles dispersion strengthened tungsten alloy fabricated involving hydrothermal method and hot isostatic pressing

Xiao

Miao

Wei

et al. 2020

Journal of Alloys and Compounds

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“…At present, the common deformation processing techniques of forging, rolling and swaging are exploited to improve the performances of W materials. W materials (such as pure W, W-K alloy, W-TiC, W-Y 2 O 3 and W-La 2 O 3 ) were processed by different deformation processing techniques with different processes to improve its microstructure and performances [37,63,[79][80][81][82][83][84][85][86][87]. Table 2 lists the relative density, grain size and some other performances of the obtained W materials after processed by different deformation processing techniques.…”

Section: Follow-up Deformation Processing Techniquementioning

confidence: 99%

“…In addition, some other performances (such as strength, toughness, plasticity, and DBTT) are improved. Zhao et al [87] reported that the deformed W-Y 2 O 3 composite showed a superior behavior to the SPS-densified W-Y 2 O 3 composite in the thermal shock response. Moreover, the deformation processing was not only combined with the PLS densification technique but also combined with some other special sintering techniques.…”

Section: Follow-up Deformation Processing Techniquementioning

confidence: 99%

Manufacturing of tungsten and tungsten composites for fusion application via different routes

2019

Tungsten

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Tungsten is a refractory metal with the highest melting point of all metals, which is considered as a promising candidate material for plasma-facing materials in the future fusion reactor. However, tungsten faces several challenges from intrinsic embrittlement, irradiation embrittlement and recrystallization embrittlement during the operation of the fusion reactor. To satisfy the fusion engineering application, an advanced tungsten material with the fine grain and dense microstructure is required and developed. This paper briefly introduces the application background of the tungsten materials and mainly illustrates a series of common techniques for manufacturing advance tungsten materials, such as powder preparation technologies, bulk densification techniques, continuous processing technologies and the coating and additive manufacturing technologies. Furthermore, the development prospects for manufacturing techniques of tungsten materials are also presented in the end. Considering the tungsten materials employed in the fusion engineering application, combining these scalable techniques of the wet-chemical method, pressureless sintering and continuous deformation processing techniques would be the possible research and development routes to realize the manufacture of the advanced tungsten materials.

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“…However, there exist severe disadvantages of recrystallization embrittlement, irradiation embrittlement, and high ductile-brittle transition temperature (DBTT) for W severed as PFMs [5][6][7]. Currently, many researchers consider that the addition of the second phase such as TiC [8], ZrC [9], Y 2 O 3 [10], and La 2 O 3 [11] could be an efficient way to improve the brittle behavior of W. The TiC with a high melting point and low thermal expansion coefficient could be used to improve the toughness of W and reduce the DBTT.…”

Section: Introductionmentioning

confidence: 99%

Microstructure evolutions of the W–TiC composite conducted by dual-effects from thermal shock and He-ion irradiation

et al. 2019

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Considering that tungsten (W) materials served as the plasma-facing material in the fusion reactor would be exposed to edgelocalized modes (ELMs)-like thermal shock loading accompanied with He-ion irradiation, the W-TiC composite produced with a wet-chemical method was conducted by the dual effects from the laser beam thermal shock first and He-ion irradiation later in this work. The microstructure changes of the W-TiC composite before and after two tests were characterized by scanning electron microscopy or transmission electron microscopy. After the laser beam thermal shock test, there was an obvious interface on the exposed surface of the W-TiC composite. Several main cracks and melting areas could be found nearby the interface and center, respectively. Furthermore, a mixture of tungsten oxide and TiC was easy to aggregate and form into circle areas surrounding the melting area. The thermal shock tested that W-TiC composite was then subjected to the He-ion irradiation. The typical features of fuzz structures could be detected on the surface of the W-TiC composite apart from the center of the melting area. Notably, several nano-sized He bubbles deeply distributed at grain boundaries in the melting area, owing to the grain boundary functioning as the free path for He diffusion.

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Thermal shock behavior of fine grained W–Y 2 O 3 materials fabricated via two different manufacturing technologies

Cited by 68 publications

References 34 publications

Uniform nanosized oxide particles dispersion strengthened tungsten alloy fabricated involving hydrothermal method and hot isostatic pressing

Uniform nanosized oxide particles dispersion strengthened tungsten alloy fabricated involving hydrothermal method and hot isostatic pressing

Manufacturing of tungsten and tungsten composites for fusion application via different routes

Microstructure evolutions of the W–TiC composite conducted by dual-effects from thermal shock and He-ion irradiation

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