Irradiation induced structural change in Mo₂Zr intermetallic phase

Journal Article · Sat May 14 00:00:00 EDT 2016 · Scripta Materialia

DOI:https://doi.org/10.1016/j.scriptamat.2016.04.041· OSTI ID:1255152

Gan, J. ^[1]; Keiser, Jr., D. D. ^[1]; Miller, B. D. ^[1]; Eriksson, N. ^[2]; Sohn, Y. H. ^[2]; Kirk, M. ^[3]

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1. Idaho National Lab. (INL), Idaho Falls, ID (United States)
2. Univ. of Central Florida, Orlando, FL (United States)
3. Argonne National Lab. (ANL), Argonne, IL (United States)

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. Furthermore, the transformed Mo₂Zr phase demonstrates exceptional radiation tolerance with the development of dislocations without bubble formation.

• Research Organization: Idaho National Lab. (INL), Idaho Falls, ID (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA); USDOE Office of Nuclear Energy (NE)
• Grant/Contract Number: AC07-05ID14517
• OSTI ID: 1255152
• Alternate ID(s): OSTI ID: 1337416
• Report Number(s): INL/JOU-14-31685; PII: S1359646216301695; TRN: US1601731
• Journal Information: Scripta Materialia, Vol. 121, Issue C; ISSN 1359-6462
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
transmission electron microscopy (TEM)
electron diffraction
metastable phase
structural change
ion irradiation