Ultratough nanocrystalline copper with a narrow grain size distribution

Youssef, Khaled M.; Scattergood, Ronald O.; Murty, K. Linga; Kock, Carl C.
August 2004
Applied Physics Letters;8/9/2004, Vol. 85 Issue 6, p929
Academic Journal
We report a unique way of using mechanical milling/in situ consolidation at both liquid-nitrogen and room temperature to produce artifact-free nanocrystalline Cu (23 nm) with a narrow grain size distribution. This nanocrystalline Cu exhibits an extraordinarily high yield strength (770 MPa), as predicted from a Hall–Petch extrapolation, along with good ductility (comparable with ∼30% uniform tensile elongation). Possible factors leading to this excellent optimization of strength and ductility are discussed.


Related Articles

  • Convergence of triples energy in CCSD(T) and CC3 calculations with correlation-consistent basis sets. Laschuk, Eduardo Fischli; Livotto, Paolo Roberto // Journal of Chemical Physics;12/22/2004, Vol. 121 Issue 24, p12146 

    The convergence behavior of connected triples correlation energy in CCSD(T) and CC3 calculations with (aug-)cc-pVXZ basis sets has been accurately described in terms of a power law of the type EX=E∞+AX-4. Calculations ranging from double-Z through septuple-Z attest the validity of this X-4...

  • The HCS/HSC and HCS+/HSC+ systems: molecular properties, isomerization, and energetics. Puzzarini, Cristina // Journal of Chemical Physics;7/8/2005, Vol. 123 Issue 2, p024313 

    The isomer pair HCS/HSC and related cations have been studied by means of a highly accurate level of theory. For all the species investigated the near-equilibrium potential energy surface has been calculated using the coupled cluster method in conjunction with correlation consistent basis sets...

  • Models and Methods of Forecasting Pitting Corrosion. Tarantseva, K. R. // Protection of Metals & Physical Chemistry of Surfaces;Jan2010, Vol. 46 Issue 1, p139 

    The existing models and methods of forecasting pitting corrosion are considered, compared, and generalized. The sphere of application of the forecast techniques is shown to differ depending on the situation. Mathematical modeling is most often used in fundamental investigations when determining...

  • On the Delay Time of the Total Signal from a Set of Transmitters. Bukhman, N. S. // Technical Physics;Jan2005, Vol. 50 Issue 1, p1 

    The time dependence of the total signal from a group of closely spaced acoustic or electromagnetic transmitters radiating the same (up to an amplitude factor) signals is considered. If the duration of the partial signal is sufficiently long, the time dependence of the signal from the set of...

  • Correlation energy extrapolation by intrinsic scaling. III. Compact wave functions. Bytautas, Laimutis; Ruedenberg, Klaus // Journal of Chemical Physics;12/8/2004, Vol. 121 Issue 22, p10852 

    The information gained in the context of extrapolating the correlation energy by intrinsic scaling is used to shorten the full configurational expansions of electronic wave function without compromising their chemical accuracy. The truncations are accomplished by judiciously limiting the...

  • Mechanical alloying of Fe-transition metal systems: The analysis of different stages. Povstugar, L. V.; Butyagin, P. Yu. // Journal of Materials Science;Aug2004, Vol. 39 Issue 16/17, p5461 

    The paper presents the results of the quantitative analysis of mechanical alloying (MA) in binary systems Fe-X (X = Ti, Zr, Nb, Mo, Ta, W). MA has been studied as a sequence of interrelated microscopic processes (structural refinement of initial components, consumption of Fe and X, transition of...

  • Effect of the ball mass to sample mass relation in the magnetic and structural properties of Fe0.6Mn0.1Al0.3 alloys prepared by mechanical alloying. Valderruten, J. F.; Alcázar, G. A. Pérez; Civale, L. // Journal of Materials Science;Aug2004, Vol. 39 Issue 16/17, p5445 

    Fe0.6Mn0.1Al0.3 samples were prepared by mechanical alloying (MA) using the 6:1, 9:1 and 12:1 ratios between the ball mass and powder mass (BM/PM) and milling times of 3, 6, 9 and 12 h. Balls of 10 and 20 mm diameter were used. X-ray diffraction (XRD) studies showed that the 6:1 and 9:1 samples...

  • Mechanochemically assisted synthesis of FeVO4 catalysts. Klissurski, D.; Iordanova, R.; Radev, D.; Kassabov, St.; Milanova, M.; Chakarova, K. // Journal of Materials Science;Aug2004, Vol. 39 Issue 16/17, p5375 

    The influence of mechanochemical treatment on the solid state reactions between α-Fe2O3 and V2O5 was studied. A stoichiometric mixture of both oxides was subjected to an intense milling in air for different time intervals. The mechanochemical treatment for 15 h leads to a drastic decrease of...

  • CP Violation Prospects at the Tevatron. Maksimović, Petar // AIP Conference Proceedings;2004, Vol. 722 Issue 1, p30 

    CDF and DØ are caught between the idealistic projections from the mid-1990’s based on the Run I results and their TDR’s on one side, and realistic extrapolations from the recent Run II measurements on the other. In this paper, we report only on the latter, and describe recent...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics