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

Abstract

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.

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1371976
Report Number(s):
PNNL-SA-124502
Journal ID: ISSN 0925-8388; 50080; DN2006000
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Alloys and Compounds; Journal Volume: 723; Journal Issue: C
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Environmental Molecular Sciences Laboratory

Citation Formats

Jana, S., Devaraj, A., Kovarik, L., Arey, B., Sweet, L., Varga, T., Lavender, C., and Joshi, V.. Kinetics of cellular transformation and competing precipitation mechanisms during sub-eutectoid annealing of U10Mo alloys. United States: N. p., 2017. Web. doi:10.1016/j.jallcom.2017.06.292.
Jana, S., Devaraj, A., Kovarik, L., Arey, B., Sweet, L., Varga, T., Lavender, C., & Joshi, V.. Kinetics of cellular transformation and competing precipitation mechanisms during sub-eutectoid annealing of U10Mo alloys. United States. doi:10.1016/j.jallcom.2017.06.292.
Jana, S., Devaraj, A., Kovarik, L., Arey, B., Sweet, L., Varga, T., Lavender, C., and Joshi, V.. Wed . "Kinetics of cellular transformation and competing precipitation mechanisms during sub-eutectoid annealing of U10Mo alloys". United States. doi:10.1016/j.jallcom.2017.06.292.
@article{osti_1371976,
title = {Kinetics of cellular transformation and competing precipitation mechanisms during sub-eutectoid annealing of U10Mo alloys},
author = {Jana, S. and Devaraj, A. and Kovarik, L. and Arey, B. and Sweet, L. and Varga, T. and Lavender, C. and Joshi, V.},
abstractNote = {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.},
doi = {10.1016/j.jallcom.2017.06.292},
journal = {Journal of Alloys and Compounds},
number = C,
volume = 723,
place = {United States},
year = {Wed Nov 01 00:00:00 EDT 2017},
month = {Wed Nov 01 00:00:00 EDT 2017}
}