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Title: Rapid Solidification in Bulk Ti-Nb Alloys by Single-Track Laser Melting

Single-track laser melting experiments were performed on bulk Ti-Nb alloys to explore process parameters and the resultant macroscopic structure and microstructure. The microstructures in Ti-20Nb and Ti-50Nb (at.%) alloys exhibited cellular growth during rapid solidification, with average cell size of approximately 0.5 µm. Solidification velocities during cellular growth were calculated from images of melt tracks. Measurements of the composition in the cellular and intercellular regions revealed nonequilibrium partitioning and its dependence on velocity during rapid solidification. Furthermore, experimental results were used to benchmark a phase-field model to describe rapid solidification under conditions relevant to additive manufacturing.
Authors:
 [1] ;  [1] ; ORCiD logo [2] ;  [1] ;  [1] ;  [1] ;  [1] ;  [3] ;  [3] ;  [1] ;  [1] ;  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Colorado School of Mines, Golden, CO (United States)
Publication Date:
Report Number(s):
LLNL-JRNL-743642
Journal ID: ISSN 1047-4838
Grant/Contract Number:
AC05-00OR22725; AC52-07NA27344
Type:
Accepted Manuscript
Journal Name:
JOM. Journal of the Minerals, Metals & Materials Society
Additional Journal Information:
Journal Volume: 70; Journal Issue: 8; Journal ID: ISSN 1047-4838
Publisher:
Springer
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE
OSTI Identifier:
1464012
Alternate Identifier(s):
OSTI ID: 1502007

Roehling, John D., Perron, Aurelien, Fattebert, Jean -Luc, Haxhimali, Tomorr, Guss, Gabe, Li, Tian T., Bober, David, Stokes, Adam W., Clarke, Amy J., Turchi, Patrice E. A., Matthews, Manyalibo J., and McKeown, Joseph T.. Rapid Solidification in Bulk Ti-Nb Alloys by Single-Track Laser Melting. United States: N. p., Web. doi:10.1007/s11837-018-2920-2.
Roehling, John D., Perron, Aurelien, Fattebert, Jean -Luc, Haxhimali, Tomorr, Guss, Gabe, Li, Tian T., Bober, David, Stokes, Adam W., Clarke, Amy J., Turchi, Patrice E. A., Matthews, Manyalibo J., & McKeown, Joseph T.. Rapid Solidification in Bulk Ti-Nb Alloys by Single-Track Laser Melting. United States. doi:10.1007/s11837-018-2920-2.
Roehling, John D., Perron, Aurelien, Fattebert, Jean -Luc, Haxhimali, Tomorr, Guss, Gabe, Li, Tian T., Bober, David, Stokes, Adam W., Clarke, Amy J., Turchi, Patrice E. A., Matthews, Manyalibo J., and McKeown, Joseph T.. 2018. "Rapid Solidification in Bulk Ti-Nb Alloys by Single-Track Laser Melting". United States. doi:10.1007/s11837-018-2920-2.
@article{osti_1464012,
title = {Rapid Solidification in Bulk Ti-Nb Alloys by Single-Track Laser Melting},
author = {Roehling, John D. and Perron, Aurelien and Fattebert, Jean -Luc and Haxhimali, Tomorr and Guss, Gabe and Li, Tian T. and Bober, David and Stokes, Adam W. and Clarke, Amy J. and Turchi, Patrice E. A. and Matthews, Manyalibo J. and McKeown, Joseph T.},
abstractNote = {Single-track laser melting experiments were performed on bulk Ti-Nb alloys to explore process parameters and the resultant macroscopic structure and microstructure. The microstructures in Ti-20Nb and Ti-50Nb (at.%) alloys exhibited cellular growth during rapid solidification, with average cell size of approximately 0.5 µm. Solidification velocities during cellular growth were calculated from images of melt tracks. Measurements of the composition in the cellular and intercellular regions revealed nonequilibrium partitioning and its dependence on velocity during rapid solidification. Furthermore, experimental results were used to benchmark a phase-field model to describe rapid solidification under conditions relevant to additive manufacturing.},
doi = {10.1007/s11837-018-2920-2},
journal = {JOM. Journal of the Minerals, Metals & Materials Society},
number = 8,
volume = 70,
place = {United States},
year = {2018},
month = {5}
}