نتایج جستجو برای: hall petch relationship
تعداد نتایج: 620413 فیلتر نتایج به سال:
Abstract In order to study the effects of coarse grain size and Ni content on mechanical properties, molecular dynamics (MD) simulation nanocrystalline (NC) Ni-W alloys with bimodal structure is carried out. The NC samples are established by embedding into fine matrix. solute atoms in segregated boundary affected zone (GBAZ) through severe plastic deformation (SPD). uniaxial tensile shows that ...
Ultrafine-grained materials display almost no strain hardening, an enhanced rate sensitivity and grain boundary offsets during plastic deformation. It is expected that dislocation climb active in order to enable prompt recovery. The present analysis proposes a deformation mechanism includes these effects follows from the for high temperature sliding. This predicts relationship between rate, flo...
A brief history and update are given in four examples demonstrating that polycrystals generally stronger than their individual component crystal grains because of obstructed dislocation pile-ups at grain boundaries. The example cases constitute diverse applications a Hall–Petch dependence involving one or another aspects the full polycrystal stress–strain behavior: (1) based description for com...
We introduce a modified phase field crystal (MPFC) technique that self-consistently incorporates rapid strain relaxation alongside the usual plastic deformation and multiple crystal orientations featured by the traditional phase field crystal (PFC) technique. Our MPFC formalism can be used to study a host of important phase transformation phenomena in material processing that require rapid stra...
The hallmark of materials science is the ability to tailor the structures of a given material to provide a desired response. In this work, the structures involving crystallinity and crystallographic orientation of Cu nanowires electrochemically fabricated in ion-track templates have been investigated as a function of fabrication condition. Both single crystalline and polycrystalline nanowires w...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید