Showing papers by "Robert S Averback published in 2014"

TL;DR: In this article, a self-adapting mechanism in a Cu90Ag10 two-phase alloy that relies on the spontaneous formation of chemically nanolayered structures during sliding wear is presented.

TL;DR: In this paper, the effect of severe plastic deformation and strain path on microstructure and texture stability in highly immiscible alloy systems is discussed in the context of the impact of high pressure torsion at room temperature.

TL;DR: In this article, the authors used high-resolution scanning electron microscopy, atom probe tomography and X-ray diffraction to study the compositional patterning of alloys.

TL;DR: In this article, simple shear deformation of three Cu-Nb interfaces with either Kurdjumov-Sachs (KS) or Nishiyama-Wassermann (NW) orientation relationships was investigated.

TL;DR: In this paper, the effects of chemical interactions on phase formation were investigated for ternary alloy system Ag-Cu-Ni during ball-milling and high-pressure torsion, and they showed that chemical effects can play an important role in phase formation during severe plastic deformation.

TL;DR: In this article, an in situ micropillar compression apparatus capable of measuring creep under heavy ion beam irradiation was presented. Butler et al. used a microfabricated doubly clamped silicon-beam transducer to measure the creep rate of amorphous Cu 56 Ti 38 Ag 6 micropills under room temperature irradiation.

TL;DR: In this article, the influence of irradiation-induced damage on the interfacial shear strength of Cu-Nb interfaces was characterized via compression of nanolaminate pillars performed in situ in a transmission electron microscope.

TL;DR: In this paper, the authors studied the composition of dilute Cu 1− x Fe x (x ǫ ≥ 12%) induced by 1.8 MeV Kr + irradiation as a function of temperature using atom probe tomography.

TL;DR: In this paper, a variant of the Bain relationship exists with preferred alignment occurring along Cu-W alloys with small angular differences among the particles, which is compensated by interfacial dislocations or strain, and the formation mechanism for such an orientation relationship is rationalized on the basis that small W clusters form within the local melt of an energetic displacements cascade.

TL;DR: In this paper, a novel approach towards the design of coarsening-resistant nanoprecipitates in structural alloys was investigated by kinetic Monte Carlo (KMC) simulation, where the highly immiscible and refractory C solute atoms are initially distributed into fractal nanoprecimitates, or cores, which become coated by a shell of B atoms during elevated temperature annealing.

TL;DR: In this paper, a local-electrode atom-probe (LEAP) homograph was purchased and upgraded with NSF-MRI (DMR-0420532) and ONR-DURIP grants.