Kinetics of cellular transformation and competing precipitation mechanisms during sub-eutectoid annealing of U10Mo alloys

Journal Article · Wed Nov 01 04:00:00 EDT 2017 · Journal of Alloys and Compounds

DOI:https://doi.org/10.1016/j.jallcom.2017.06.292· OSTI ID:1371976

Jana, S.; Devaraj, A.; Kovarik, L.; Arey, B.; Sweet, L.; Varga, T.; Lavender, C.; Joshi, V.

Transformation kinetics of metastable body-centered cubic γ-UMo phase in U-10 wt.percent Mo alloy during annealing at sub-eutectoid temperatures of 500C and 400C has been determined as a function of time using detailed microstructural characterization by scanning electron microscopy, X-ray diffraction analysis, scanning transmission electron microscopy, and atom probe tomography. Based on the results, we found that the phase transformation is initiated by cellular transformation at both the temperatures, which results in formation of a lamellar microstructure along prior γ-UMo grain boundaries.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1371976
• Report Number(s): PNNL-SA-124502; 50080; DN2006000
• Journal Information: Journal of Alloys and Compounds, Journal Name: Journal of Alloys and Compounds Journal Issue: C Vol. 723; ISSN 0925-8388
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
Environmental Molecular Sciences Laboratory