Geometrically Necessary Dislocations on Plastic Deformation of Polycrystalline TRIP Steel
نویسندگان
چکیده
منابع مشابه
Finite element analysis of geometrically necessary dislocations in crystal plasticity
We present a finite element method for the analysis of ductile crystals whose energy depends on the density of geometrically necessary dislocations (GNDs). We specifically focus on models in which the energy of the GNDs is assumed to be proportional to the total variation of the slip strains. In particular, the GND energy is homogeneous of degree one in the slip strains. Such models indeed aris...
متن کاملThe role of geometrically necessary dislocations in giving material strengthening
The role of geometrically necessary dislocations in providing macroscopic strengthening is reviewed with particle reinforcement as an example. The general relation between the Nye tensor and slip along a curvilinear slip line net is derived to emphasise the importance of curvature of slip lines upon the rate of dislocation storage. 2002 Acta Materialia Inc. Published by Elsevier Science Ltd. Al...
متن کاملAn acoustic emission study of plastic deformation in polycrystalline aluminium
Acoustic emission experiments were performed on polycrystalline and single crystal 99.990/0 aluminium while undergoing tensile deformation. It was found that acoustic emission counts as a function of grain size showed a maximum value at a particular grain size. Furthermore, the slip area associated with this particular grain size corresponded to the threshold level of detectability of single di...
متن کاملCharged dislocations and the plastic deformation of II-VI compounds
— The flow of charge associated with the plastic deformation of a range of II-VI compounds is studied both in darkness and under illumination. It arises from the movement of charged dislocations, and is discussed in terms of an ionic model in which there are electronic energy levels at the dislocation core. The results provide some evidence concerning the types of slip plane and the dislocation...
متن کاملDislocations in paratellurite TeO2 : elastic energies and plastic deformation
2014 Paratellurite TeO2 is a crystal with exceptional anisotropic elasticity. This is the origin of interesting acousto-optical applications; as they depend on crystalline perfection, dislocations are of particular importance and their properties are also directly linked to elasticity. We have calculated the energy of dislocations with [100], [110] and [001] Burgers vectors : in some cases, it ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Crystals
سال: 2019
ISSN: 2073-4352
DOI: 10.3390/cryst9060289