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Title: Solute partitioning in multi-component γ/γ' Co–Ni-base superalloys with near-zero lattice misfit

The addition of nickel to cobalt-base alloys enables alloys with a near zero γ – γ' lattice misfit. The solute partitioning between ordered γ' precipitates and the disordered γ matrix have been investigated using atom probe tomography. Lastly, the unique shift in solute partitioning in these alloys, as compared to that in simpler Co-base alloys, derives from changes in site substitution of solutes as the relative amounts of Co and Ni change, highlighting new opportunities for the development of advanced tailored alloys.
Authors:
 [1] ;  [1] ;  [2] ;  [1]
  1. Idaho National Lab. (INL), Idaho Falls, ID (United States)
  2. Univ. of California, Santa Barbara, CA (United States)
Publication Date:
Report Number(s):
INL/JOU-14-33973
Journal ID: ISSN 1359-6462; PII: S1359646215300373
Grant/Contract Number:
AC07-05ID14517; 1233704
Type:
Accepted Manuscript
Journal Name:
Scripta Materialia
Additional Journal Information:
Journal Volume: 113; Journal Issue: C; Journal ID: ISSN 1359-6462
Publisher:
Elsevier
Research Org:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Co-base superalloys; APT; TEM; partitioning; lattice misfit
OSTI Identifier:
1294335
Alternate Identifier(s):
OSTI ID: 1397997

Meher, S., Carroll, L. J., Pollock, T. M., and Carroll, M. C.. Solute partitioning in multi-component γ/γ' Co–Ni-base superalloys with near-zero lattice misfit. United States: N. p., Web. doi:10.1016/j.scriptamat.2015.10.039.
Meher, S., Carroll, L. J., Pollock, T. M., & Carroll, M. C.. Solute partitioning in multi-component γ/γ' Co–Ni-base superalloys with near-zero lattice misfit. United States. doi:10.1016/j.scriptamat.2015.10.039.
Meher, S., Carroll, L. J., Pollock, T. M., and Carroll, M. C.. 2015. "Solute partitioning in multi-component γ/γ' Co–Ni-base superalloys with near-zero lattice misfit". United States. doi:10.1016/j.scriptamat.2015.10.039. https://www.osti.gov/servlets/purl/1294335.
@article{osti_1294335,
title = {Solute partitioning in multi-component γ/γ' Co–Ni-base superalloys with near-zero lattice misfit},
author = {Meher, S. and Carroll, L. J. and Pollock, T. M. and Carroll, M. C.},
abstractNote = {The addition of nickel to cobalt-base alloys enables alloys with a near zero γ – γ' lattice misfit. The solute partitioning between ordered γ' precipitates and the disordered γ matrix have been investigated using atom probe tomography. Lastly, the unique shift in solute partitioning in these alloys, as compared to that in simpler Co-base alloys, derives from changes in site substitution of solutes as the relative amounts of Co and Ni change, highlighting new opportunities for the development of advanced tailored alloys.},
doi = {10.1016/j.scriptamat.2015.10.039},
journal = {Scripta Materialia},
number = C,
volume = 113,
place = {United States},
year = {2015},
month = {11}
}