Thermodynamic database development: Al-Am-Ga-Pu-U

Technical Report · Mon Mar 17 00:00:00 EDT 2014

DOI:https://doi.org/10.2172/1124865· OSTI ID:1124865

Perron, A. ^[1]; Turchi, P. E. A. ^[1]; Landa, A. ^[1]; Soderlind, P. ^[1]

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1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Physical and Life Sciences

The goal of this study is about the thermodynamic re-assessment of the Plutonium- Uranium (Pu-U) system as a first step leading to the development of a plutonium-based thermodynamic database (i.e., Pu with Al, Am, Ga, Mo, U…) with resulting phase diagrams and associated thermodynamic data. Indeed, phase stability trends and phase diagrams of multi-component nuclear materials are crucial for predicting properties and performance under normal, hypothetical or even accidental conditions. This work is based on a coupling between ab initio energetics, phenomenological thermodynamics models - based on the CALPHAD (CALculation of PHAse Diagrams) approach - and the use of the Thermo-Calc software, together with experimental data (whenever available). The present report summarizes results obtained (quarter period: 10/07/2013-01/07/2014) under the auspices of an agreement between CEA/DAM and NNSA/DP on cooperation in fundamental science supporting stockpile stewardship (P182).

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 1124865
• Report Number(s): LLNL-TR-651842
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE