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Nb含量對Zr-xNb合金顯微組織及再結晶過程的影響
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西部新鋯核材料科技有限公司,西部新鋯核材料科技有限公司,北京科技大學 新金屬材料國家重點實驗室,北京科技大學 新金屬材料國家重點實驗室

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國家863項目基金資助(2012AA03A507)


Influence of Nb content on microstructure and recrystallization process of Zr-xNb alloys
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Western Energy Material Technologies Co,Ltd,Xi’an,Western Energy Material Technologies Co,Ltd,Xi’an,State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing,State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing

Fund Project:

National Magnetic Confinement Fusion Program (2014GB121001)

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    摘要:

    作為第三代鋯合金的主要合金元素，Nb元素的作用引起了廣泛關注。本文通過透射電子顯微鏡、光學顯微鏡、顯微硬度計等手段研究了Nb含量對Zr-xNb（x=0, 0.3, 0.7, 1.0）合金顯微組織及再結晶過程的影響。結果顯示，隨著Nb含量的增加，Zr-xNb合金中第二相的數(shù)量迅速增多，平均尺寸逐漸減小，其再結晶過程逐漸減慢；尤其在Zr-1Nb合金中，第二相對再結晶過程的阻礙作用明顯加強。Zr-0.3Nb合金中的第二相主要為Zr(Nb,Fe,Cr)2，Zr-1Nb中第二相主要為β-Nb。

    Abstract:

    Niobium acts as a main alloying element in the third generation zirconium alloys. The role of Nb element in the alloys is greatly concerned. The influences of Nb content on the microstructure and recrystallization process of Zr-xNb (x=0, 0.3, 0.7, 1.0) alloys were studied by means of transmission electron microscopy (TEM), optical microscopy (OM) and Vickers micro-hardness testing. The results show that with increasing Nb content the quantity of the precipitates increases and the mean size of the precipitate particles decreases. Meanwhile, the recrystallization process is slowed down by the precipitates, especially in the case of Zr-1Nb alloy. The main precipitates were found to be Zr(Nb,Fe,Cr)2 and β-Nb in Zr-0.3Nb and Zr-1Nb, respectively.

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田航,周軍,公維佳,張海龍. Nb含量對Zr-xNb合金顯微組織及再結晶過程的影響[J].稀有金屬材料與工程,2017,46(12):3994~3999.[Tian hang, Zhou Jun, Gong Weijia, Zhang Hailong. Influence of Nb content on microstructure and recrystallization process of Zr-xNb alloys[J]. Rare Metal Materials and Engineering,2017,46(12):3994~3999.]
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  • 收稿日期:2015-11-02
  • 最后修改日期:2016-08-23
  • 錄用日期:2016-09-14
  • 在線發(fā)布日期: 2018-01-04
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