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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

Clc Number:

TG146.4+14

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    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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[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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History
  • Received:May 19,2018
  • Revised:August 21,2018
  • Adopted:August 30,2018
  • Online: September 05,2019
  • Published: