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累積退火參數(shù)與含Nb鋯合金耐腐蝕性能關(guān)系述評(píng)
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中央高校基本科研業(yè)務(wù)費(fèi) (CDJZR10130008)


Review on Correlation of Accumulated Annealing Parameter and Corrosion Resistance of Nb-containing Zirconium Alloys
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    摘要:

    累積退火參數(shù)(A)被廣泛用于評(píng)價(jià)核反應(yīng)堆用Zr-Sn系合金的耐水側(cè)腐蝕性能。對于累積退火參數(shù)在新發(fā)展的含Nb鋯合金中的應(yīng)用，迄今未有一致意見，有學(xué)者認(rèn)為傳統(tǒng)的累積退火參數(shù)不再適用于含Nb鋯合金的耐腐蝕性能的評(píng)價(jià)。本文綜述了累積退火參數(shù)在常見牌號(hào)核用鋯合金中的研究概況，并從A值的本質(zhì)出發(fā)，解釋了累積退火參數(shù)與鋯合金微觀組織之間的聯(lián)系及其評(píng)價(jià)耐腐蝕性能的微觀原因。提出合金元素的擴(kuò)散速率（Fe、Cr擴(kuò)散很快，Nb擴(kuò)散極慢）是累積退火參數(shù)是否起作用的決定因素。指出累積退火參數(shù)可以直接用來評(píng)價(jià)低Nb鋯合金的耐腐蝕性能，即A值越小，第二相粒子越細(xì)小彌散，合金的耐腐蝕性能越佳

    Abstract:

    Accumulated annealing parameter has been widely used for indicating the corrosion resistance of Zircaloys. However, for Nb-containing zirconium alloys, a unanimous conclusion has not been drawn yet. Even more, some researchers confirm that the accumulated annealing parameter is totally inadequate in this type of alloy. Based on its physical nature, we summarize the correlation of the accumulated annealing parameter and alloy microstructure. Further, the reason why it can identify the corrosion resistance in some specific alloys is explained tentatively. It is suggested that the diffusion rate of alloying elements (Fe and Cr diffusing fast while Nb diffusing extraordinarily slow) determines whether the accumulated annealing parameter will work. A clear conclusion is drawn that the accumulated annealing parameter can identify the low-Nb zirconium alloy’s corrosion resistance, i.e., the smaller the value of the accumulated annealing parameter, the finer the second phase particles and then the better the corrosion resistance of alloy

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柴林江,欒佰峰,陳建偉,余泓冰,黃天林,周 軍.累積退火參數(shù)與含Nb鋯合金耐腐蝕性能關(guān)系述評(píng)[J].稀有金屬材料與工程,2012,41(6):1119~1123.[Chai Linjiang, Luan Baifeng, Chen Jianwei, Yu Hongbing, Huang Tianlin, Zhou Jun. Review on Correlation of Accumulated Annealing Parameter and Corrosion Resistance of Nb-containing Zirconium Alloys[J]. Rare Metal Materials and Engineering,2012,41(6):1119~1123.]
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  • 收稿日期:2011-06-05
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