@article{95148881411945e388c7f1c2f4af2efe,
title = "Revealing cryogenic mechanical behavior and mechanisms in a microstructurally-stable, immiscible nanocrystalline alloy",
abstract = "Here, the Cottrell–Stokes ratio in a microstructurally-stable Cu-3Ta (at.%) nanocrystalline alloy is examined from the standpoint of changes in deformation mechanisms. Toward this, uniaxial compression experiments were performed in the temperature range of 113 K – 273 K. The Cottrell-Stokes ratio at the lowest temperature tested was ~1.3, and the material exhibited a very low strain-rate sensitivity at cryogenic-temperatures. Transmission electron microscopy (TEM) characterization showed negligible average grain size coarsening and a transition in the deformation mechanism toward athermal activation processes such as twinning with the reduction in the testing temperature.",
keywords = "Cryogenic-temperature, Nanocrystalline, Transmission electron microscopy, Zener-Hollomon parameter",
author = "Hornbuckle, {B. C.} and C. Kale and S. Srinivasan and Luckenbaugh, {T. L.} and Kiran Solanki and Darling, {K. A.}",
note = "Funding Information: C.K., S.S., and K.N.S. acknowledges the support of the US Army Research Laboratory under contract W911NF-15-2-0038 and a National Science Foundation grant No. 1663287 . The authors would also like to acknowledge Qiuming Wei for fruitful discussion during the preparation of this manuscript. Appendix A Fig. A1 (A) Yield stress for Cu-3Ta and Cu-10Ta plotted as a function of Zener-Hollomon parameter at various cryogenic and high-temperatures (Points indicated by circular markers are for room temperature and above tests, while those indicated by square makers are for room temperature and below tests). (B) Yield stress for Cu–3Ta plotted as a function of Zener–Hollomon parameter at different cryogenic-temperature and a strain rate of 10 −3 s −1 . Fig. A1 Appendix B Publisher Copyright: {\textcopyright} 2018",
year = "2019",
month = feb,
doi = "10.1016/j.scriptamat.2018.09.035",
language = "English (US)",
volume = "160",
pages = "33--38",
journal = "Scripta Materialia",
issn = "1359-6462",
publisher = "Elsevier Limited",
}