Mechanical Behavior of Additively Manufactured Uranium-6 wt. pct. Niobium

Technical Report · Fri Sep 15 00:00:00 EDT 2017

DOI:https://doi.org/10.2172/1414344· OSTI ID:1414344

Wu, A. S. ^[1]; Wraith, M. W. ^[1]; Burke, S. C. ^[1]; Hamza, A. V. ^[1]; Brown, D. W. ^[2]; Clausen, B. ^[2]; Hsiung, L. L. ^[1]; McKeown, J. T. ^[1]; Lindvall, R. E. ^[1]; Sedillo, E. M. ^[1]; Teslich, N. E. ^[1]; Torres, S. G. ^[1]; Urabe, D. S. ^[1]; Freeman, D. C. ^[1]; Alexander, P. A. ^[1]; Iniguez, M. R. ^[1]; Ryerson, F. J. ^[1]; Ancheta, D. S. ^[1]; Lotscher, J. P. ^[1]; Young, E. W. ^[1] ; Evans, C. L. ^[1]; Florando, J. N. ^[1]; Gallegos, G. F. ^[1]; Margraff, M. ^[1]; Hrousis, C. A. ^[1]; Campbell, G. H. ^[1]

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1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

This report describes an effort to process uranium-6 weight% niobium using laser powder bed fusion. The chemistry, crystallography, microstructure and mechanical response resulting from this process are discussed with particular emphasis on the effect of the laser powder bed fusion process on impurities. In an effort to achieve homogenization and uniform mechanical behavior from different builds, as well as to induce a more conventional loading response, we explore post-processing heat treatments on this complex alloy. Elevated temperature heat treatment for recrystallization is evaluated and the effect of recrystallization on mechanical behavior in laser powder bed fusion processed U-6Nb is discussed. Wrought-like mechanical behavior and grain sizes are achieved through post-processing and are reported herein.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC52-07NA27344
• OSTI ID: 1414344
• Report Number(s): LLNL-TR-739064
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE