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第二相对Zr-Sn-Nb系锆合金吸氢性能的影响
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作者单位:

1.北京科技大学新金属材料国家重点实验室;2.国核宝钛锆业股份公司

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中图分类号:

TG146.4+14

基金项目:

国家自然科学基金资助(项目号21171018和51271021)和新金属材料国家重点实验室资助


Effect of second phase particels on the hydrogen absorption properties of Zr-Sn-Nb zirconium alloys
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Affiliation:

1.State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing;2.State Nuclear Bao Ti Zirconium Industry Company

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    摘要:

    对两种新型Zr-Sn-Nb系锆合金(SZA-4和SZA-6)管材在电解渗氢条件下的吸氢性能及机制进行了研究。结果表明,在供货状态下,SZA-4锆合金管材的吸氢倾向高于SZA-6锆合金管材,但经过完全再结晶退火处理后发现,SZA-4锆合金管材的吸氢倾向降低,而SZA-6锆合金管材的吸氢倾向增加,并且SZA-6锆合金管材的吸氢倾向反而高于SZA-4锆合金管材。与传统Zr-4合金管材相比,完全再结晶退火态的SZA-4和SZA-6锆合金管材在电解渗氢条件下的吸氢倾向均高于Zr-4合金管材。SZA-4和SZA-6锆合金管材吸氢倾向的变化与其内部析出的第二相有关。大量fcc结构的(Zr,Nb)2Fe第二相析出是导致完全再结晶退火态SZA-6锆合金吸氢倾向增加的主要原因。

    Abstract:

    Electrolytic hydrogenation was carried out on two kinds of newly developed zirconium alloy (SZA-4 and SZA-6) tubes, and the effects on the hydrogen absorption properties and mechanism were investigated. The results showed that the hydrogen absorption tendency of SZA-4 alloy was higher than that of SZA-6 alloy under the as-received condition, while, after the recrystallization annealing, the hydrogen absorption tendency of SZA-4 alloy reduced, and the hydrogen absorption tendency of SZA-6 alloy increased. As a result, the hydrogen absorption tendency of SZA-6 alloy was higher than that of SZA-4 alloy, and both of them have a higher hydrogen absorption tendency than that of the traditional Zr-4 alloy. The changes of the hydrogen absorption tendency of SZA-4 and SZA-6 zirconium alloys were related to the precipitation of SPPs. A large amount of (Zr,Nb)2Fe SPPs precipitated with fcc crystal structure in the SZA-6 alloy after recrystallization annealing lead to the hydrogen absorption tendency increasing.

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张 寅,张 诚,袁改焕,高 博,宋西平.第二相对Zr-Sn-Nb系锆合金吸氢性能的影响[J].稀有金属材料与工程,2019,48(8):2507~2514.[Zhang Yin, Zhang Cheng, Yuan Gaihuan, Gao Bo, Song Xiping. Effect of second phase particels on the hydrogen absorption properties of Zr-Sn-Nb zirconium alloys[J]. Rare Metal Materials and Engineering,2019,48(8):2507~2514.]
DOI:10.12442/j. issn.1002-185X.20180515

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  • 收稿日期:2018-05-19
  • 最后修改日期:2018-08-21
  • 录用日期:2018-08-30
  • 在线发布日期: 2019-09-05
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