Grain boundary characterization and mechanical testing
Effect of Ion Implantation on the Mechanical Properties of the Grain and Grain Boundary Regions of Inconel X750
... and mechanical property degradation in ...microstructure characterization was a major contribution of this ...the mechanical properties measured through nanoindentation hardness test on irradiated ...
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Relationship of grain boundary structure and mechanical properties of Inconel 690
... through grain boundaries. Dislocations that can not glide easily through grain boundaries pile up in the regions adjacent to the grain ...the mechanical response of iron-silicion and ...
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Grain Boundary Engineering the Mechanical Properties of Allvac 718Plus(Trademark) Superalloy
... Abstract Grain Boundary Engineering (GBE) can enhance the population of structurally-ordered “low ” Coincidence Site Lattice (CSL) grain boundaries in the ...“special” grain boundaries have ...
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Development of Micro Tensile Testing Method in an FIB System for Evaluating Grain Boundary Strength
... strain was larger than that of the aged condition specimen, the part where the final fracture occurred was flat. The specimen fractured at the grain boundary in a brittle manner although plastic strain ...
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Mechanical Characterization of Metallic Materials by Instrumented Spherical Indentation Testing
... To establish a direct correlation between the materials indentation response and the constitutive behaviour, the present chapter 1 is aimed at describing the evolution of the plastic strain distribution during the ...
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Grain Boundary Structure Dependence of Extrinsic Grain Boundary Dislocation Emission Phenomena: A Molecular Dynamics Study
... the grain boundaries to act as dislocation sources affects the mechanical characteristics of UFG metals, the relationship between the annealing process and these mechanical characteristics can be ...
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Effect of Extrinsic Grain Boundary Dislocations on Mechanical Properties of Ultrafine Grained Metals by Molecular Dynamics Simulations
... the mechanical properties of UFG metals, especially nanocrystalline metals that contain a large number of grain ...each grain boundary at 100 ...a grain boundary to diffuse in the ...
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Characterization of Engineered Tissue by Multimodal Optical Imaging and Biaxial Mechanical Testing
... distortions through their cytoskeleton by microtubules, microfilament bundles etc. 97-101 Our study suggested, however, that the deposition of preferentially aligned collagen did not result in an overall strongly ...
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Physiologically-based testing system for the mechanical characterization of prosthetic vein valves
... which were necessary for a full evaluation of the different valves of the second generation, optimized design. More specifically, by reducing the prosthetic devices to life-size (i.e. 1:1 scale) models, it was possible ...
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Influence of Rhenium on the Grain Boundary Strength, Phase Evolution, and High Temperature Mechanical Properties of a Fine Grain Nickel Base Superalloy at 982°C
... creep testing equipment at 982 C/200 MPa in ...acid. Grain size was measured by determining the mean linear intercept of the grains using optical microscopy ...
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An overview of using small punch testing for mechanical characterization of MCrAlY bond coats
... the mechanical properties of thin coatings since the thickness of the specimen can be close to the coatings (Ref ...punch testing technique, clear interpretations of the deformation and failure mechanisms ...
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Dislocation Grain Boundary Interactions in Irradiated Metals
... of Mechanical and Materials Engineering, University of Nebraska-Lincoln (Lincoln, USA) The behavior of dislocations in unirradiated and ion-irradiated austenitic stainless steels has been observed directly by ...
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Evaluation of Mechanical Properties of Σ5(210)/[001] Tilt Grain Boundary with Self-Interstitial Atoms by Molecular Dynamics Simulation
... [38, 53, 54]. However, this is not the case for the current study, where dislocation nucleation was only evidenced from GB-1 that has been modified by absorbing SIAs. With the increase in the tensile strain, dislocations ...
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Effects of defects in composite wind turbine blades – Part 1: Characterization and mechanical testing
... Abstract. The Montana State University Composite Material Technologies Research Group performed a study to ascertain the effects of defects that often result from the manufacture of composite wind turbine blades. The ...
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Effects of Grain Boundary Sliding and Plastic Deformation of Grains on the Formation of Grain Boundary Cracks in a Double Cylindrical Bicrystal of a Cu SiO2 Alloy
... circular grain boundary. After mechanical and electrolytic polishing, fiducial lines parallel to the x 1 and x 2 axes were scribed on the surface of one specimen at a spacing of 100 ...Instron-type ...
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Grain boundary precipitation in Inconel 718 and ATI 718Plus
... of grain boundary precipitation on tensile prop- erties and ...in mechanical properties ...in mechanical properties with a loss in γ ...the mechanical proper- ties over a very small ...
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Grain Boundary Relaxation in 18-carat Gold Alloys
... First of all, I would like to express my thanks to both the thesis directors Prof. Robert Schaller and Dr. Daniele Mari. They were a complementary team in guiding my thesis work and I never had the feeling to be sitting ...
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Grain-Boundary Diffusion of Hydrogen Atoms in the α-Iron
... the mechanical behaviour of materials being exposed to severe hydro- gen environment ...dislocations, grain bound- aries, and precipitates, is important to understand the peculiarities of hydrogen ...of ...
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Electron Energy loss Spectroscopy Characterization of ∼$1 nm thick Amorphous Film at Grain Boundary in Si based Ceramics
... 4. Dopant Saturation in Film: Si 3 N 4 Doped with 100 ppm Levels of CaO The force balance model predicted that the equilibrium film thickness in a given material can be changed by cation additives segregated to ...
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Fundamentals of grain boundaries and grain boundary migration
... of grain boundary properties on the five macroscopic parameters introduced above, it would be necessary to keep all but one degree of freedom constant and successively vary one free parameter [1, ...
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