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Title: Additive Manufacturing of a y0-Tetragonal Uranium-Niobium Alloy

Abstract

The ability to process near-net shape structures is of particular interest in applications using rare or expensive materials. Laser powder bed fusion additive manufacturing can meet this challenge, yet also introduces significant processing and materials challenges toward achieving structural integrity. Broadly addressed aspects affecting powder bed fusion structures include surface roughness, residual stresses, and porosity. Here, we focus on materials-specific challenges—namely, the influence of multiple pass reheating during processing and post-processing homogenization on phase transformations and the role of impurities and oxides on grain morphology and mechanical behavior—with a view of adopting laser powder bed fusion processing for the shape memory alloy, uranium-6 wt.% niobium. Our observations to date on the factors influencing material behavior and post-processing requirements and recommendations for process improvement are discussed herein.

Authors:
 [1];  [1];  [1];  [1];  [1];  [2];  [2];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1] more »;  [1];  [1];  [1] « less
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1466113
Report Number(s):
LLNL-TR-755875
942094
DOE Contract Number:  
AC52-07NA27344
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Wu, A. S., Gallegos, G. F., Wraith, M. W., Burke, S. C., Elmer, J. W., Brown, D. W., Clausen, B., Alexander, P. A., Iniguez, M. R., Ancheta, D. S., Florando, J. N., Hsiung, L. L., Sunwoo, A. J., Lindvall, R. E., Ryerson, F. J., Freeman, D. C., Urabe, D. S., Lotscher, J. P., Sedillo, E. M., Evans, C. L., Torres, S. G., Teslich, N. E., and Campbell, G. H. Additive Manufacturing of a y0-Tetragonal Uranium-Niobium Alloy. United States: N. p., 2018. Web. doi:10.2172/1466113.
Wu, A. S., Gallegos, G. F., Wraith, M. W., Burke, S. C., Elmer, J. W., Brown, D. W., Clausen, B., Alexander, P. A., Iniguez, M. R., Ancheta, D. S., Florando, J. N., Hsiung, L. L., Sunwoo, A. J., Lindvall, R. E., Ryerson, F. J., Freeman, D. C., Urabe, D. S., Lotscher, J. P., Sedillo, E. M., Evans, C. L., Torres, S. G., Teslich, N. E., & Campbell, G. H. Additive Manufacturing of a y0-Tetragonal Uranium-Niobium Alloy. United States. doi:10.2172/1466113.
Wu, A. S., Gallegos, G. F., Wraith, M. W., Burke, S. C., Elmer, J. W., Brown, D. W., Clausen, B., Alexander, P. A., Iniguez, M. R., Ancheta, D. S., Florando, J. N., Hsiung, L. L., Sunwoo, A. J., Lindvall, R. E., Ryerson, F. J., Freeman, D. C., Urabe, D. S., Lotscher, J. P., Sedillo, E. M., Evans, C. L., Torres, S. G., Teslich, N. E., and Campbell, G. H. Mon . "Additive Manufacturing of a y0-Tetragonal Uranium-Niobium Alloy". United States. doi:10.2172/1466113. https://www.osti.gov/servlets/purl/1466113.
@article{osti_1466113,
title = {Additive Manufacturing of a y0-Tetragonal Uranium-Niobium Alloy},
author = {Wu, A. S. and Gallegos, G. F. and Wraith, M. W. and Burke, S. C. and Elmer, J. W. and Brown, D. W. and Clausen, B. and Alexander, P. A. and Iniguez, M. R. and Ancheta, D. S. and Florando, J. N. and Hsiung, L. L. and Sunwoo, A. J. and Lindvall, R. E. and Ryerson, F. J. and Freeman, D. C. and Urabe, D. S. and Lotscher, J. P. and Sedillo, E. M. and Evans, C. L. and Torres, S. G. and Teslich, N. E. and Campbell, G. H.},
abstractNote = {The ability to process near-net shape structures is of particular interest in applications using rare or expensive materials. Laser powder bed fusion additive manufacturing can meet this challenge, yet also introduces significant processing and materials challenges toward achieving structural integrity. Broadly addressed aspects affecting powder bed fusion structures include surface roughness, residual stresses, and porosity. Here, we focus on materials-specific challenges—namely, the influence of multiple pass reheating during processing and post-processing homogenization on phase transformations and the role of impurities and oxides on grain morphology and mechanical behavior—with a view of adopting laser powder bed fusion processing for the shape memory alloy, uranium-6 wt.% niobium. Our observations to date on the factors influencing material behavior and post-processing requirements and recommendations for process improvement are discussed herein.},
doi = {10.2172/1466113},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {8}
}