Grain boundary mediated plasticity: The role of grain boundary atomic structure and thermal activation
نویسندگان
چکیده
منابع مشابه
Grain boundary-mediated plasticity in nanocrystalline nickel.
The plastic behavior of crystalline materials is mainly controlled by the nucleation and motion of lattice dislocations. We report in situ dynamic transmission electron microscope observations of nanocrystalline nickel films with an average grain size of about 10 nanometers, which show that grain boundary-mediated processes have become a prominent deformation mode. Additionally, trapped lattice...
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Grain boundary plays an important role in determining the physical properties and chemical stability of the materials. In particular, the structures of grain boundaries in atomic layer deposited TiN film may be one of the main factors to dominate the reliability and performance of ULSI devices with multilayer structure of Cu-based interconnects. In this work, the characteristics of grain bounda...
متن کاملComment on "Grain boundary-mediated plasticity in nanocrystalline nickel".
Nanograin rotation via grain boundary sliding has been predicted as an important deformation mode in nanocrystalline materials as grain sizes approach less than 10 nm (1–3). However, definite experimental evidence beyond molecular dynamics (MD) simulations has been long sought. Recently, Shan et al. (4) reported in situ straining dark-field transmission electron microscope (DFTEM) observations ...
متن کاملResponse to Comment on ‘‘Grain Boundary–Mediated Plasticity in
Boundary–Mediated Plasticity in Nanocrystalline Nickel’’ Our study (1) reported on the deformation response of nanocrystalline Ni during in situ dark-field transmission electron microscopy (DFTEM) straining experiments and showed what we view as direct and compelling evidence of grain boundary–mediated plasticity. Based on their analysis of the limited experimental data we presented, however, C...
متن کاملThe Role of the Boundary Plane in Grain Boundary Engineering
This paper reports new data on the distribution of grain boundary planes in commercially available GBE copper. The results show that nearly 60% of grain boundary length was Σ3, i.e. annealing twin related. There was a slightly enhanced proportion of {111} boundary planes, even after Σ3 boundary segments were excluded from the data set. There was a high proportion of boundary plane length on the...
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ژورنال
عنوان ژورنال: Scripta Materialia
سال: 2018
ISSN: 1359-6462
DOI: 10.1016/j.scriptamat.2017.10.002