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The combined influence of grain size distribution and dislocation density on hardness of interstitial free steelWei Li1,2,Martina Vittorietti3,2,Geurt Jongbloed3,Jilt Sietsma11. Department... representation of the mechanical behavior. The classical Taylor equation is often used to account for the effect of dislocation density, but not thoroughly tested in combination with grain size......
Analysis on Dissociation of Pyramidal I Dislocation in Magnesium by Generalized-Stacking-Fault EnergyQun Zu,Ya-Fang Guo,Xiao-Zhi TangInstitute of Engineering Mechanics,Beijing Jiaotong University摘 要:The generalized-stacking-fault energies are calculated to illustrate the dissociation of
that the dislocation density of pure tantalum is not high and dislocation cells occur after 95% cold rolling reduction. Because the stacking fault energy (SFC) of tantalum is high, the dislocation cross slips easily which can lower the dislocation density. On the other hand, according to the tree dislocation theory, it is assumed that when pure tantalum is deformed at room temperature, the slip system......
Incipient plasticity and activation volume of dislocation nucleation for TiZrNbTaMo high-entropy alloys characterized by nanoindentationShao-Ping Wang1,2,Jian Xu11. Shenyang National Laboratory..., incipient plasticity of two as-cast BCC TiZrNbTa and TiZrNbTaMo high-entropy alloys(HEAs) are investigated in terms of pop-in events during loading, to characterize the dislocation behavior......
Molecular Dynamics Simulation of Porous Layer-enhanced Dislocation Emission and Crack Propagation in Iron CrystalD. Li1), F.Y. Meng1), X.Q. Ma1), L.J. Qiao2) and W.Y. Chu2) 1) Department of Physics... Beijing, Beijing 100083, China摘 要:The internal stress induced by a porous layer or passive layer can assist the applied stress to promote dislocation......
and sample annealed at 110 ℃, GP zone are the main precipitates. The different flow behaviors are ascribed to the type of precipitates as well as the dislocation density differences. Key words: aluminum alloy; Portevin-Le Chatelier effect; precipitation; dislocation ......
Inhomogeneity Dislocation Interaction of Piezoelectric Materials Under Remote Non - uniform Shear & Electric Field张亚芳摘 要:The complex potentials method is used to develop a solution for a screw dislocation interacting with an elliptical piezoelectric inhomogeneity in piezoelectric materials under remote non-uniform antiplane shear and non-uniform......
Formation of Vacancy-Type Dislocation Loops in Hydrogen-Ion-Implanted Fe–Cr AlloyYu-Feng Du,Li-Juan Cui,Wen-Tuo Han,Fa-Rong Wan摘 要:Fe-10 at.%Cr alloy was implanted with hydrogen ions at room temperature, followed by annealing at high temperatures.The annealing process made the defects develop into large dislocation loops. The nature of the dislocation......
Study of Dislocation Boundary Structure in Al–Li Alloy During BendingXiao Jin1,Bao-Qin Fu2,Cheng-Lu Zhang1,Wei Liu11. Laboratory of Advanced Materials, School of Material Science and Engineering, Tsinghua University2. Key Laboratory for Radiation Physics and Technology,Institute of Nuclear Science and Technology, Sichuan University摘 要:The dislocation......
Dislocation Behaviour near the Crack Tip in Bulk Fe-3% Si Single Crystal徐永波,哈宽富,王中光,杨春松,戴忠玲摘 要:<正> An investigation has been made of the disloca-tion distribution and dislocation free zone near thecrack tip in bulk Fe-3% Si single crystal duringdeformation in SEM.It has been found that anumber of dislocations were emitted from the cracktip during......
