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低能高通量氦離子輻照下W28Ta28V28Zr8Sc8高熵合金損傷行為研究
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1.合肥工業(yè)大學材料科學與工程學院;2.有色金屬與加工技術國家地方聯(lián)合工程研究中心

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國家重點研發(fā)磁約束聚變能發(fā)展專項(2019YFE03120002)


Study on W28Ta28V28Zr8Sc8 High-entropy alloy Irradiation Damage Induced by Low-energy and High-flux Helium Ions
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School of Materials Science and Engineering,Hefei University of Technology

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    摘要:

    采用放電等離子燒結(jié)技術制備了W28Ta28V28Zr8Sc8高熵合金，研究了高熵合金在低能量、高通量氦離子輻照下的損傷行為。結(jié)果表明，在相同He離子輻照參數(shù)下，高熵合金表現(xiàn)出比純W更優(yōu)異的抗輻照損傷性能。不同He離子能量條件下，高熵合金中出現(xiàn)嚴重Fuzz結(jié)構(gòu)時的He離子能量閾值遠高于純W。在相同輻照參數(shù)下，高熵合金有著明顯小于純W的Fuzz層厚度。W28Ta28V28Zr8Sc8高熵合金中不同相區(qū)在輻照后表現(xiàn)出不同的表面形貌特點，這與構(gòu)成相區(qū)主要元素的He離子輻照行為有關。通過設計高熵合金的顯微組織，可以獲得優(yōu)良的抗輻照材料。

    Abstract:

    The damage behavior under low-energy and high-flux helium ions irradiation condition of the W28Ta28V28Zr8Sc8 high-entropy alloy, prepared by spark plasma sintering (SPS), is studied. The results show that the high-entropy alloy reveals better resistance to irradiation damage than pure W under the same He ions irradiation condition. Under different He ion energies, the He ions threshold energy when the serious “fuzz” structure appears in high-entropy alloy is much higher than that of pure W. With the same irradiation parameters, the “fuzz” layer thickness of high-entropy alloy is obviously smaller than that of pure W. After irradiation, the different phase regions of W28Ta28V28Zr8Sc8 high-entropy alloy show different surface morphology characteristics, which are related to the He ion irradiation behavior of the main elements constituting the phase region. An excellent irradiation damage resistant material could be achieved by designing the microstructure of the high entropy alloy.

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王亞鋒,羅來馬,昝祥,朱曉勇,吳玉程.低能高通量氦離子輻照下W28Ta28V28Zr8Sc8高熵合金損傷行為研究[J].稀有金屬材料與工程,2023,52(1):339~344.[WANGYAFENG, Laima Luo, zanxiang, zhuxiaoyong, wuyucheng. Study on W28Ta28V28Zr8Sc8 High-entropy alloy Irradiation Damage Induced by Low-energy and High-flux Helium Ions[J]. Rare Metal Materials and Engineering,2023,52(1):339~344.]
DOI：10.12442/j. issn.1002-185X.20211130

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歷史
  • 收稿日期:2021-12-19
  • 最后修改日期:2022-02-26
  • 錄用日期:2022-03-25
  • 在線發(fā)布日期: 2023-02-13
  • 出版日期: 2023-02-08