Journal ArticleDOI
Length scale and time scale effects on the plastic flow of fcc metals
TLDR
In this paper, the authors examined size scale and strain rate effects on single-crystal face-centered cubic cubic (fcc) metals and found that dislocations nucleating at free surfaces are critical to causing micro-yield and macro-yielding in pristine material.About:
This article is published in Acta Materialia.The article was published on 2001-12-03. It has received 271 citations till now. The article focuses on the topics: Length scale & Strain rate.read more
Citations
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Fast parallel algorithms for short-range molecular dynamics
TL;DR: Comparing the results to the fastest reported vectorized Cray Y-MP and C90 algorithm shows that the current generation of parallel machines is competitive with conventional vector supercomputers even for small problems.
Journal ArticleDOI
Size dependence of mechanical properties of gold at the micron scale in the absence of strain gradients
TL;DR: In this article, the authors used uniaxial compression experiments on Au cylinders at the sub-micron scale, without stress/strain gradients, and determined compression stress, strain, and stiffness of the pillars.
Journal ArticleDOI
Nanoscale gold pillars strengthened through dislocation starvation
Julia R. Greer,William D. Nix +1 more
TL;DR: In this article, the authors showed that submicrometer sized gold crystals can be 50 times stronger than their bulk counterparts due to the elimination of defects from the crystal in the course of deformation.
Journal ArticleDOI
Size dependence of nanostructures: Impact of bond order deficiency
Chang Q. Sun,Chang Q. Sun +1 more
TL;DR: The BOLS correlation mechanism has been initiated and intensively verified as discussed by the authors, which has enabled the tunability of a variety of properties of a nanosolid to be universally reconciled to the effect of bond order deficiency of atoms at sites surrounding defects or near the surface edges of the nano-material.
Journal ArticleDOI
Ultra-strength materials
TL;DR: In this paper, an overview of the principal deformation mechanisms of ultra-strength materials is presented, and the fundamental defect processes that initiate and sustain plastic flow and fracture are described, as well as the mechanics and physics of both displacive and diffusive mechanisms.
References
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Journal ArticleDOI
Fast parallel algorithms for short-range molecular dynamics
TL;DR: In this article, three parallel algorithms for classical molecular dynamics are presented, which can be implemented on any distributed-memory parallel machine which allows for message-passing of data between independently executing processors.
Fast parallel algorithms for short-range molecular dynamics
TL;DR: Comparing the results to the fastest reported vectorized Cray Y-MP and C90 algorithm shows that the current generation of parallel machines is competitive with conventional vector supercomputers even for small problems.
Journal ArticleDOI
Canonical dynamics: Equilibrium phase-space distributions
TL;DR: The dynamical steady-state probability density is found in an extended phase space with variables x, p/sub x/, V, epsilon-dot, and zeta, where the x are reduced distances and the two variables epsilus-dot andZeta act as thermodynamic friction coefficients.
Journal ArticleDOI
Embedded-atom method: Derivation and application to impurities, surfaces, and other defects in metals
Murray S. Daw,Michael I. Baskes +1 more
TL;DR: In this paper, the authors derived an expression for the total energy of a metal using the embedding energy from which they obtained several ground-state properties, such as the lattice constant, elastic constants, sublimation energy, and vacancy-formation energy.
Journal ArticleDOI
Indentation size effects in crystalline materials: A law for strain gradient plasticity
William D. Nix,Huajian Gao +1 more
TL;DR: In this article, the indentation size effect for crystalline materials can be accurately modeled using the concept of geometrically necessary dislocations, which leads to the following characteristic form for the depth dependence of the hardness: H H 0 1+ h ∗ h where H is the hardness for a given depth of indentation, h, H 0 is a characteristic length that depends on the shape of the indenter, the shear modulus and H 0.
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Embedded-atom method: Derivation and application to impurities, surfaces, and other defects in metals
Murray S. Daw,Michael I. Baskes +1 more