Irradiation induced structural change in Mo₂Zr intermetallic phase

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• 作者：J. Gan^a ; ^{Jian.Gan@inl.gov" class="auth_mail" title="E-mail the corresponding author} ; D.D. Keiser Jr.^a ; B.D. Miller^a ; N. Eriksson^b ; Y.H. Sohn^b ; M. Kirk^c
• 刊名：Scripta Materialia
• 出版年：2016
• 出版时间：August 2016
• 年：2016
• 卷：121
• 期：Complete
• 页码：56-60
• 全文大小：785 K

文摘

The Mo₂Zr phase has been identified as a major interaction product at the interface of U-10Mo and Zr. Transmission electron microscopy in-situ irradiation with Kr ions at 200 °C with doses up to 2.0E + 16 ions/cm² was carried out to investigate the radiation stability of the Mo₂Zr. The Mo₂Zr undergoes a radiation-induced structural change, from a large cubic (cF24) to a small cubic (cI2), along with an estimated 11.2% volume contraction without changing its composition. The structural change begins at irradiation dose below 1.0E + 14 ions/cm². The transformed Mo₂Zr phase demonstrates exceptional radiation tolerance with the development of dislocations without bubble formation.