Strain localization in multi slip crystal plasticity

Yalçınkaya, Tuncay
Zıttı, Gıanluca


Strain Path Change Effects in a BCC Crystal Plasticity Framework
Yalçınkaya, Tuncay (2006-10-26)
The presentation outlines a temperature dependent, strain rate sensitive crystal plasticity model at finite strains which is aimed to be used in the modeling of strain path change effects for BCC structured materials. Plastic anisotropy in BCC crystals originates from different sources at different length scales. Slip asymmetry and intrinsic anisotropic effects caused by screw dislocation cores are the ones at the micro level, the development of dislocation sub-structures is relevant at meso lev...
Strain localization induced failure and microstructure evolution through rate dependent and rate independent non convex plasticity models
Yalçınkaya, Tuncay (2014-06-30)
Strain Gradient Polycrystal Plasticity for Micro-Forming
Yalçınkaya, Tuncay; Özdemir, İzzet (2016-04-29)
The developments in the micro-device industry has produced a substantial demand for the miniaturized metallic components with ultra-thin sheet materials that have thickness dimensions on the order of 50-500 mu m which are produced through micro-forming processes. It is essential to have predictive tools to simulate the constitutive behavior of the materials at this length scale taking into account the physical and statistical size effect. Recent studies have shown that on the scale of several micrometers an...
Strain gradient crystal plasticity: Intergranular microstructure formation
Özdemir, İzzet; Yalçınkaya, Tuncay (Springer International Publishing, 2016-01-01)
This chapter addresses the formation and evolution of inhomogeneous plastic deformation field between grains in polycrystalline metals by focusing on continuum scale modeling of dislocation-grain boundary interactions within a strain gradient crystal plasticity (SGCP) framework. Thermodynamically consistent extension of a particular strain gradient plasticity model, addressed previously (see also, e.g., Yalcinkaya et al, J Mech Phys Solids 59:1-17, 2011), is presented which incorporates the effect of grain ...
Strain Gradient Crystal Plasticity Approach to Modelling Micro-Plastic Flow and Localisation in Polycrystalline Materials
Simonovski, Igor; Yalçınkaya, Tuncay (2015-09-17)
Structural materials in the reactor pressure vessels are exposed to a harsh environment, resulting in a number of material degradation processes. Irradiation generates a number of point defects in the atomic structure of a material. In addition, plastic slip localization occurs on the grain level size where highly-deformed narrow bands of material appear already at the moderate strain levels. These bands are called channels or clear bands, because they are almost empty of irradiation defects, whereas the su...
Citation Formats
T. Yalçınkaya and G. Zıttı, “Strain localization in multi slip crystal plasticity,” presented at the European Solid Mechanics Conference, (06 - 10 Temmuz 2015), Madrid, İspanya, 2015, Accessed: 00, 2021. [Online]. Available: