dislocation based interpretation on the effect of the


Dislocation-based interpretation on the effect of the

Dislocation-based interpretation on the effect of the

Jan 01, 2015 · Some experiments are conducted in correlation with the microstructure analysis, based on EBSD (Electron Beam Scattered Diffraction) scan, performed by a Hitachi SU6600 SEM equipped with HKL NordlysF camera for orientation acquisition. In addition, another important section will be dedicated to the dislocation structures found inside ferrite grains.sp.info Dislocation-based interpretation on the effect of the Dislocation-based interpretation on the effect of the loading frequency on the fatigue properties of JIS S15C low carbon steelsp.info Dislocation-based interpretation on the effect of the As a physically-based approach, evolution of dislocation morphology and ability of dislocation movement are often discussed involving strain-rate sensitivity [15]. A common interpretation of the sp.info A dislocation-based analysis of strain history effects in (2001). A dislocation-based analysis of strain history effects in ice. Philosophical Magazine A:Vol. 81, No. 7, pp. 1849-1872.


			
CHAPTER 7 DISLOCATIONS AND

CHAPTER 7 DISLOCATIONS AND

Dislocations are the elementary carriers of plastic flow thus they define material mechanical properties Dislocations allow deformation at much lower stress than in a perfect crystal because slip does not require all bonds across the slip line to break simultaneously, but only small fraction of the bonds are broken at any given time.sp.info DISLOCATION MECHANICS BASED ANALYSIS OF rework the dislocation mechanics based constitutive equation analysis leading to Eqn. (2) so as to include the neglected drag effect. The drag consideration enters into the time-of -f light of dislocation motion between thermal activation barriers.sp.info Dislocation Density-Based Model for Flow Behavior Apr 04, 2019 · A dislocation density-based constitutive model that considered the effects of initial lamellar thickness was proposed to predict the flow behavior of a near-α high-temperature Ti-5.4Al-3.7Sn-3.3Zr-0.5Mo-0.4Si alloy.sp.info Acetabular cup position and risk of dislocation in Oct 26, 2016 · Effect of femoral head size on risk of revision for dislocation after total hip arthroplasty:a population-based analysis of 42,379 primary procedures from the Finnish Arthroplasty Register. Acta Orthop 2013; 84 (4):342–7. [PMC free article] [Google Scholar] Leichtle U G, Leichtle C I, Taslaci F, Reize P, Wunschel M..


			
Analysis of Nano indentation Size effect based on

Analysis of Nano indentation Size effect based on

Analysis of Nano indentation Size effect based on Dislocation Dynamics and Crystal Plasticity H.J. Chang To cite this version:H.J. Chang. Analysis of Nano indentation Size effect based on Dislocation Dynamics and Crystal Plasticity. Chemical and Process Engineering. Institut National Polytechnique de Grenoble - INPG, 2009. English. ￿tel sp.info Molecular dynamics-based analysis of the effect of Jul 22, 2020 · In FCC single-crystal CoCrFeMnNi HEA, perfect dislocations appear on two different slip surfaces, and the meeting between these induces a dislocation reaction to form a dislocation cluster, which impedes the further movement of dislocations. Such behavior has a significant effect on the work-hardening and fracture of materials.sp.info A dislocation-based analysis of strain history effects in Jul 01, 2001 · The cyclic loading response of ice specimens can be analysed with a dislocation-based model of anelasticity to produce an estimate of the effective mobile dislocation density. Moreover, the cyclic loading response is sufficiently sensitive to track the sp.info Discrete dislocation plasticity analysis of the effect of Aug 15, 2017 · The glide velocity of dislocation I is defined by a linear drag relation v g ( I) = f g ( I) / B g where B g is the drag coefficient. Computing the corresponding climb velocity v c ( I) is more involved as it is dependent on the distribution of vacancies in the γ phase.


			
Analysis of dislocation pile-ups using a dislocation-based

Analysis of dislocation pile-ups using a dislocation-based

Jan 17, 2014 · The originally introduced higher-dimensional continuum dislocation dynamics theory (hdCDD) is based on the dislocation density tensor of second order, αII, and is defined in terms of differential forms and higher order currents [ 21 ].sp.info Dislocation-mechanics-based constitutive relations for An improved description of copper- and iron-cylinder impact (Taylor) test results has been obtained through the use of dislocation-mechanics-based constitutive relations in the Lagrangian material dynamics computer program EPIC-2. The effects of strain hardening, strain-rate hardening, and thermal softening based on thermal activation analysis have been incorporated into a reasonably accurate sp.info Unveiling the Re effect in Ni-based single crystal Jan 20, 2020 · Our present observations further the understanding of creep in Ni-based superalloys, in particular the effect of Re on dislocation motion, and provide direct evidence of solute drag and/or pipe sp.info MD-based characterization of plastic deformation in Cu/Ag Sep 01, 2018 · According to the study of Zhang et al. [14] on the effect of sample geometry, nucleation of dislocations in a cubic sample of single crystal copper occurred easier and faster than that of its cylindrical specimen. This was attributed to the much greater stresses in the cube edges compared to the stress distributions in the cylinder wall.


			
Mechanism of Strain Rate Effect Based on Dislocation

Mechanism of Strain Rate Effect Based on Dislocation

tative interpretation of strain rate e ect can be made based on dynamics relationship and Orowan’s rela-tionship. Equations (1) and (2) indicate that plastic strain rate increases with dislocation velocity which increases with stress. To a metal, a high plastic strain rate needs a high dislocation velocity, consequently, a largesp.info Effect of femoral head size on risk of revision for Larger femoral heads clearly reduce the risk of dislocation. The difference in using heads of > 36 mm as opposed to 28-mm heads for the overall revision rate at 10 years follow-up is about 2%. Thus, although attractive from a mechanical point of view, based on recent less favorable clinical outco sp.info The Contribution of Dislocation Density and Velocity to Jul 16, 2018 · T he tendency for some metals, especially FCC metals, to exhibit a size effect under specific loading conditions including indentation and torsion has been the focus of intensive research to understand the fundamental mechanisms that control this phenomenon.[1,2,3,4,5] The indentation size effect (ISE) is widely accepted to be governed by dislocation-based mechanisms in crystalline sp.info (PDF) Towards a further understanding of dislocation This is based on dislocations analysis that includes discrete dislocation dynamic (DDD), continuum dislocation dynamic (CDD) and a visco-plastic self-consistent (VPSC) model.


			
Dislocation defect based model analysis for the pre

Dislocation defect based model analysis for the pre

Dislocation defect based model analysis for the pre-breakdown reverse characteristics of 4H-SiC p + n diodes. L. Zheng, R. P. Joshi, C. Fazi. The pre-breakdown reverse characteristics of 4H-silicon carbide diodes were studied to determine the effects of the presence of dislocations and traps in the material. The mathematical model developed sp.info (PDF) Analysis of Nano indentation Size effect based on Analysis of Nano indentation Size effect based on Dislocation Dynamics and Crystal Plasticity different grain boundary mechanisms may exist in addition to the dislocation-based mechanisms. The sp.info (PDF) Dislocation-Based Finite Element Modelling of The analysis is based on modelling the shear part from the phenomenological theory of martensitic transformation to obtain both the transformation mobile and immobile dislocation-densities.sp.info The effect of range of motion simulated with a patient Sep 19, 2021 · Dislocation continues to be a common complication following total hip arthroplasty (THA). Although previous studies of computed simulation analysis investigated the range of motion (ROM), it is unclear whether the ROM before impingement simulated using computed tomography-based 3-dimensional simulation analysis (simulated ROM) is related to dislocation after THA.


			
Comparison of the Dislocation Density in Martensitic

Comparison of the Dislocation Density in Martensitic

based method was also used for analysis of the heat treat-ment effect on the dislocation density in 11.7Cr–0.2C martensitic steels by Peˇsicˇka et al.,16) where the TEM method was also applied and the rather compatible results between the XRD and the TEM method were obtained in deriving the dislocation density. However, it should be keptsp.info A Microstructural Finite Element Analysis of TWIP Steel Feb 22, 2016 · Implementation of crystal plasticity-based models in FE simulations has been extensively carried out for materials with twinning [5–14]. However, to the best of the authors’ knowledge, the literature lacks of implementation of dislocation density-based models in FE simulations for materials with TWIP effect and especially for TWIP steels.sp.info Effect of femoral head size on risk of revision for Jun 25, 2013 · Effect of femoral head size on risk of revision for dislocation after total hip arthroplasty:a population-based analysis of 42,379 primary procedures from the Finnish Arthroplasty Register.sp.info Dislocation-based gradient elastic fracture mechanics for Aug 04, 2016 · The in-plane classical dislocation-based linear elastic fracture mechanics analysis is extended to the case of strain gradient elasticity. Nonsingular stress and smooth-closure crack profiles are derived. As in the classical treatment, the crack is represented by a distribution of climb edge dislocations (for Mode I) or glide edge dislocations (for mode II). These distributions are determined