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Related to Grain boundary: Grain growth, Twin boundary
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References in periodicals archive ?
The total grain boundary area and the length of triple grain junctions increase accordingly.
That started to change when NIST theorist James Warren saw a conference presentation by the University of Alberta's Hao Zhang concerning some odd "strings" of atoms in his simulation of grain boundary motion using a simulation technique called molecular dynamics.
The matrix of the iron is 90% Si-rich ferrite, with a grain boundary network of 5-10% primary carbides and pearlite.
Int'l Conference on Grain Boundary Diffusion, Stresses and Segregation (2010: Moscow, Russia) Ed.
Among specific topics are high-pressure torsion for ring samples in different thicknesses, fabricating nanocrystalline copper by explosive dynamic loading, disorientations after severe plastic deformation and their effect on work hardening, microstructure evolution of pure nickel up to a high strain level during equal-channel angular pressing, producing bulk ultrafine grained steel through severe plastic deformation, cooperative grain boundary sliding and shear banding at high strains in ultrafine grained and nanocrystalline lead alloys, the distribution of mechanical properties by volume in titanium billets processed by twist extrusion, and the effects of high pressure torsion on magnetic properties of amorphous alloys.
For each it includes such information as grain boundary diffusion, pipe diffusion and surface diffusion for the pure element and likely compounds.
But the authors cautioned that at this temperature, "it becomes imperative that the temperature in the heat treated parts be controlled precisely in order to avoid grain boundary melting.
Taking deformation and fracture in turn, he discusses such topics as creep behavior of materials, dislocation motion at elevated temperatures, creep of solid solution alloys, mechanisms of grain boundary sliding, the diffusional growth of creep cavities, nucleation and the growth of wedge-type microcracks, predicting creep rupture life, and environmental damage at high temperature.
Intended for mechanical and metallurgical engineers, this guide describes the three primary methods for strengthening superalloys, the microstructure of superalloy phases, and the compositional effects of refractory, grain boundary, reactive, oxide, and trace elements.
The proceedings of the November 2004 conference consists of 83 papers on nanotechnology, the simulation and modeling of new materials, interface and grain boundary structures, and environmental science applications.