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Zr-Nb-Cu合金第二相分析
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國家“863”計(jì)劃(2008AA031701)


Second Phases in the Zr-Nb-Cu Alloy
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    摘要:

    通過掃描電鏡和透射電鏡觀察Zr-Nb-Cu合金最終退火板材的顯微組織及第二相,并利用選區(qū)電子衍射確定第二相晶體結(jié)構(gòu)。結(jié)果表明,在Zr-Nb-Cu合金退火板材中存在兩種第二相,第1種為體心立方(bcc)的β-Nb,尺寸較小,在晶粒內(nèi)部彌散分布;第2種尺寸較大,在晶界分布,這種第二相為含F(xiàn)e和Nb的四方結(jié)構(gòu)Zr2Cu相。

    Abstract:

    The microstructure and the second phases in the annealed Zr-Nb-Cu alloy were characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The crystal structure of the second phases was determined by selected area electron diffraction (SAD) pattern, and the quantitative analysis of second phases was preformed using TEM with energy dispersion spectroscopy (EDS). Results show that there are two kinds of second phases in the Zr-Nb-Cu alloy. The first one is β-Nb with a bcc structure, small size and a dispersive distribution in the grains, and the second one is Zr2Cu precipitates with a tetragonal structure, big size and a distribution on the grain boundary.

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劉二偉,張喜燕,陳建偉,李中奎,周 軍,石明華. Zr-Nb-Cu合金第二相分析[J].稀有金屬材料與工程,2012,41(11):2010~2012.[Liu Erwei, Zhang Xiyan, Chen Jianwei, Li Zhongkui, Zhou Jun, Shi Minghua. Second Phases in the Zr-Nb-Cu Alloy[J]. Rare Metal Materials and Engineering,2012,41(11):2010~2012.]
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  • 收稿日期:2011-11-28
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