@article{aa44b74a5fd44eadbc29939c3e1b68b1,
title = "Atom-probe tomographic study of γ/γ′ interfaces and compositions in an aged Co-Al-W superalloy",
abstract = "Atom-probe tomography (APT) is utilized to investigate, in a Co-9.7Al-10.8W at.% alloy aged at 900 °C for ∼1000 h, the phase compositions and partitioning behavior of the two-phase γ(face-centered cubic)/γ′(L12) microstructure. The APT composition of the γ-matrix (Co-8.97Al-5.69W at.%) agrees well with a previously reported measurement made by energy-dispersive X-ray spectroscopy; however, the composition of the γ′(L12) precipitates (Co-10.03Al-12.48W at.%) is slightly richer in W and Al, and leaner in Co. Partitioning coefficients and Al interfacial excesses are also calculated.",
keywords = "Atom-probe tomography, Cobalt alloys, Interfaces, Intermetallic compounds, Superalloy",
author = "Bocchini, {Peter J.} and Lass, {Eric A.} and Moon, {Kil Won} and Williams, {Maureen E.} and Campbell, {Carelyn E.} and Kattner, {Ursula R.} and Dunand, {David C.} and Seidman, {David N.}",
note = "Funding Information: This research was sponsored by the US Department of Energy, Office of Basic Energy Sciences (Dr. John Vetrano, monitor) through Grant DE-FG02-98ER45721 . P.J.B. received partial support from the NASA Aeronautics Scholarship Program . APT measurements were conducted at the Northwestern University Center for Atom-Probe Tomography (NUCAPT) . The LEAP tomograph was purchased with funds from the NSF-MRI Program through Grant DMR 0420532 (Dr. Charles Bouldin, monitor) and from the ONR-DURIP Program through Grant N00014-0400798 (Dr. Julie Christodoulou, monitor). The authors would like to thank Dr. D. Isheim for managing NUCAPT and Drs. I. Blum and J. Saal for valuable discussions. We also gratefully acknowledge the Initiative for Sustainability and Energy at Northwestern (ISEN) for Grants to upgrade the capabilities of NUCAPT.",
year = "2013",
month = apr,
doi = "10.1016/j.scriptamat.2012.11.035",
language = "English (US)",
volume = "68",
pages = "563--566",
journal = "Scripta Materialia",
issn = "1359-6462",
publisher = "Acta Materialia Inc",
number = "8",
}