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退火工藝對Zr-0.8Sn-0.25Nb-0.35Fe-0.1Cr-0.05Ge合金耐腐蝕性能的影響
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上海大學,上海大學,國核寶鈦鋯業(yè)股份公司,國核寶鈦鋯業(yè)股份公司,國核寶鈦鋯業(yè)股份公司,上海大學,上海大學

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國家自然科學基金項目（面上項目，重點項目，重大項目）


Effect of Annealing Process on the Corrosion Resistance of Zr-0.8Sn-0.25Nb-0.35Fe-0.1Cr-0.05Ge Alloy
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Shanghai University,Shanghai University,State Nuclear Bao Ti Zirconium Industry Company,State Nuclear Bao Ti Zirconium Industry Company,State Nuclear Bao Ti Zirconium Industry Company,Shanghai University,Shanghai University

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    摘要:

    利用靜態(tài)高壓釜腐蝕實驗和SEM、TEM/EDS分析方法，研究了β相水淬后不同退火工藝對Zr-0.8Sn-0.25Nb-0.35Fe-0.1Cr-0.05Ge合金的顯微組織及在400 ℃/10.3 MPa過熱蒸汽中耐腐蝕性能的影響。結(jié)果表明：500℃退火處理的樣品發(fā)生了部分再結(jié)晶，退火時間對第二相尺寸的影響不明顯；580℃退火處理的樣品發(fā)生了完全再結(jié)晶，并且隨著退火時間的延長，第二相的尺寸增大；合金元素主要以密排六方的Zr(Nb,Fe,Cr)2、四方的Zr3Ge和正交的Zr3Fe第二相析出；Zr-0.8Sn-0.25Nb-0.35Fe-0.1Cr-0.05Ge合金在400 ℃/10.3MPa過熱蒸汽中的耐腐蝕性能隨著退火溫度的升高和退火時間的延長而提高。

    Abstract:

    The corrosion resistance of Zr-0.8Sn-0.25Nb-0.35Fe-0.1Cr-0.05Ge alloy samples with different annealing processes has been studied in super-heated steam at 400 ℃/10.3 MPa by autoclave test. The microstructure of the samples was investigated by TEM/EDS and SEM. The results show that partial recrystallization occurs in the samples annealed at 500 ℃, and the effect of annealing time on the size of second phase particles(SPPs) is not obvious; while complete recrystallization occurs in the samples annealed at 580 ℃, as the prolongation of annealing time, the size of SPPs enlarged in Zr-0.8Sn-0.25Nb-0.35Fe-0.1Cr-0.05Ge alloy. There exist Zr(Nb,Fe,Cr)2 SPPs with a hexagonal close packed structure, tetragonal Zr3Ge and orthogonal Zr3Fe SPPs. The corrosion resistance of Zr-0.8Sn-0.25Nb-0.35Fe-0.1Cr-0.05Ge alloy in super-heated steam at 400 ℃/10.3 MPa is improved with the prolongation of annealing time and increase of annealing temperature.

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梁楠,張金龍,袁改煥,王練,高博,姚美意,周邦新.退火工藝對Zr-0.8Sn-0.25Nb-0.35Fe-0.1Cr-0.05Ge合金耐腐蝕性能的影響[J].稀有金屬材料與工程,2017,46(1):201~206.[Liang Nan, zhang jinlong, Yuan Gaihuan, Wang Lian, Gao Bo, Yao Meiyi, Zhou Bangxin. Effect of Annealing Process on the Corrosion Resistance of Zr-0.8Sn-0.25Nb-0.35Fe-0.1Cr-0.05Ge Alloy[J]. Rare Metal Materials and Engineering,2017,46(1):201~206.]
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  • 收稿日期:2014-10-14
  • 最后修改日期:2014-11-10
  • 錄用日期:2014-12-25
  • 在線發(fā)布日期: 2017-03-16
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