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by the combination effect of the Schmid factor of dominated slip system and the dislocation mechanism. Key words: mechanical property; dislocations; molecular dynamics; plastic anisotropy; nanotwins 1 Introduction Ultrafine-grained polycrystalline copper with thin nanotwins embedded in individual grains has attracted much attention since it was synthesized in the last decade. The strength......
="ChDivSummary" name="ChDivSummary">Homogeneous columnar Cu film with fully embedded nanotwins was successfully fabricated on Ti/Cu seed layer on silicon wafer. The nanotwins with thickness of tens.... By adjusting the acid concentration,the nanotwins can be induced from the top columnar grain to middle columnar grain and reach the bottom equiaxed grain, and a microstructural transformation model......
elongation of 8%.TEM observations showed that accommodating more dislocations and secondary twinning inside the nanotwins contribute to the enhanced ductility and work hardening rate of the annealed......
, Harbin Engineering University摘 要:The mixed nanostructure mainly consisting of nanotwins and nanograins was obtained in a solid solution CuCrZr alloy......
%. The current study reveals that the incorporation of nanotwins architecture by shear deformation may constitute a viable strategy to tune the mechanical performance and, in particular, to dramatically increase......
variations including grain morphologies,nanotwins,amorphous phases and crystal structures of the layers.The principles for designing nanolaminates with exceptionally high mechanical and physical......
the microstructure of sample A, a large number of twins exist in sample B. There are a few papers about the effect of nanotwins on passive films. The corrosion current density of nanotwins Cu is much lower than that of the other types of Cu samples [35]. Nanotwins Ni can greatly influence the film thickness and the diffusion coefficient of point defect [36,37]. The presence of nanotwins can form a more......
et al [27] applied a high-density current (J=18.6 kA/mm2, t=800 μs) into Cu–Zn alloy, lots of the α-phase nanotwins with a orientation of (111)in parallel with the current direction were found in the current pulse treated sample. WANG et al [27] further compared the microstructure treated by a lower density current pulse (J=12.5 kA/mm2, t=800 μs) and only few α-phase nanotwins with random......
and subgrain structures, low-angle GBs (LAGBs), high angle grain boundaries (HAGBs), stacking faults (SFs) and nanotwins may coexist in the HPT Al-Mg alloys. Figure 2 shows a typical deformed microstructure... and subgrain structures, LAGBs, HAGBs, SFs and nanotwins coexist in the HPT Al-Mg alloys. As such, the deformation mechanism of the Al-Mg alloys under HPT probably involves deformation twinning......
]. J Appl Phys, 2001, 89(10): 5622-5629. [13] SUZULI T, NISHI Y, FUJIMOTO. Ruddlesden-popper planar faults and nanotwins in heteroepitaxial nonstroichiometric barium titanate thin films[J]. J Am Cram......
