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核燃料棒端塞用冷軋鋯合金棒材橫截面低倍組織異?，F(xiàn)象的研究
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TG146.4

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Studies on Abnormal Morphology of Cross Section in Cold-Pilgered Zr-4 Bar Used As End Caps of Nuclear Fuel Rods
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    摘要:

    針對鋯合金棒材在皮爾格冷軋中出現(xiàn)的橫截面芯部低倍組織異?，F(xiàn)象，用光學(xué)金相、掃描電子顯微鏡(SEM)、X-射線衍射(XRD)、硬度法、密度法等手段對冷軋鋯-4合金棒材芯部低倍組織異?，F(xiàn)象的本質(zhì)、產(chǎn)生原因以及對使用性能的影響等進行了全面分析和研究。研究認(rèn)為冷軋鋯-4合金棒材橫截面芯部出現(xiàn)的低倍組織異?，F(xiàn)象并不是存在缺陷的表現(xiàn)，而是軋制載荷使芯部產(chǎn)生了不利于耐酸浸蝕的織構(gòu)造成的；這種異?，F(xiàn)象的存在不會威脅到其在反應(yīng)堆中的安全性，在反應(yīng)堆環(huán)境下可安全使用。

    Abstract:

    Abnormal morphology appears easily in the cross section of cold-pilgered zirconium alloy bar due to improper die design or/and improper deformation ratio distribution. Causes and its effects on usability were investigated in this paper by optical microscopy(OM), scanning electron microscopy(SEM), X-ray diffraction(XRD), hardness and density, etc. Studying results prove that such abnormal phenomena are not exhibition of defects; however result from preferred orientation with low acid corrosion resistance brought by cold pilgering; such abnormal phenomena have no effects on usability of cold-pilgered bars, cold-pilgered zirconium alloy bar with abnormal phenomena can still serve reactors safely.

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薛祥義 白新德 田振業(yè) 文惠民 李曉寧.核燃料棒端塞用冷軋鋯合金棒材橫截面低倍組織異?，F(xiàn)象的研究[J].稀有金屬材料與工程,2004,33(8):804~807.[Xue Xiangyi, Bai Xinde, Tian Zhenye, Wen Huimin, Li Xiaoning. Studies on Abnormal Morphology of Cross Section in Cold-Pilgered Zr-4 Bar Used As End Caps of Nuclear Fuel Rods[J]. Rare Metal Materials and Engineering,2004,33(8):804~807.]
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  • 最后修改日期:2004-02-19
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