Finite element investigation of the effect of hardening behavior of alloys on equal channel angular pressing performance

Date

2008-08-22

Author

Karpuz, Pinar
Simsir, Caner
Gür, Cemil Hakan
Kim, Hyoung Seop

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

54
views

0
downloads

In most of the simulation studies of equal channel angular pressing (ECAP) it has been assumed that materials obey isotropic hardening law. However, in the case of precipitation hardenable alloys, ail accurate prediction of the deformation behavior requires incorporation of kinematic hardening model. In this study, the influences of kinematic, isotropic and combined hardening laws on deformation behavior have been investigated. For this purpose, an ECAP die consisting of two 120 degrees channels has been selected, and the effect of hardening law on the strain profile and ram pressure at the final exit channel has been studied. The simulation results showed that the hardening mechanism does not affect the strain profiles extensively; but, when kinematic hardening mechanism was considered the ram pressure decreases significantly due to less hardening of the material during reverse loading in the final exit channel.

Subject Keywords

Equal channel angular pressing, Hardening mechanisms, Bauschinger effect, Finite element modeling

URI

https://hdl.handle.net/11511/37312

DOI

https://doi.org/10.4028/www.scientific.net/msf.584-586.1021

Conference Name

4th International Conference on Nanomaterials by Severe Plastic Deformation

Collections

Department of Metallurgical and Materials Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

Finite element study of biomagnetic fluid flow in a symmetrically stenosed channel Turk, O.; Tezer, Münevver; Bozkaya, Canan (Elsevier BV, 2014-03-15) The two-dimensional unsteady, laminar flow of a viscous, Newtonian, incompressible and electrically conducting biofluid in a channel with a stenosis, under the influence of a spatially varying magnetic field, is considered. The mathematical modeling of the problem results in a coupled nonlinear system of equations and is given in stream function-vorticity-temperature formulation for the numerical treatment. These equations together with their appropriate boundary conditions are solved iteratively using the ...
Finite element modeling of beams with functionally graded materials Gürol, Tolga; Sarıtaş, Afşin; Department of Civil Engineering (2014) In this thesis a new beam element that is based on force formulation is proposed for modeling elastic and inelastic analysis of beams with functionally graded materials. The attempt of producing functionally graded materials (FGM) arose from mixing two materials in such a way that both of them preserve their physical, mechanical and thermal properties most effectively. FGM shows a gradation through the depth from typically a metallic material such as steel or aluminum at one face of the beam’s section depth...
Finite element modeling approaches and comparative study on the nonlinear behavior of steel shear-links Kızıldağ, Yaşam; Sarıtaş, Afşin; Department of Civil Engineering (2013) This study deals with the finite element modeling of the nonlinear behavior of shear links under various loading and boundary conditions. Shear-links are the most important part of an eccentrically braced steel frame system, and provide fuse in terms of reducing the forces acting on the rest of the members such as columns and braces in the framing system. Shear-links are designed for dissipation of large amounts of energy in case of overloading; therefore construction of buildings with eccentrically braced ...
Finite element modeling of electromagnetic radiation Yılmaz, Asım Egemen; Kuzuoğlu, Mustafa; Department of Electrical and Electronics Engineering (2007) In this thesis, quadratic hexahedral edge elements have been applied to the three dimensional for open region electromagnetic scattering problems. For this purpose, a semi-automatic all-hexahedral mesh generation algorithm is developed and implemented. Material properties inside the elements and along the edges are also determined and prescribed during the mesh generation phase in order to be used in the solution phase. Based on the condition number quality metric, the generated mesh is optimized by means o...
Finite element modeling of stress evolution in quenching process Doğu, Doruk; Gür, Cemil Hakan; Department of Metallurgical and Materials Engineering (2005) In this thesis the finite element computer code QUEANA simulating the quenching of axisymetric parts and determining the residual stress state was improved by adding pre- and post-processors. The code was further verified by additional numerical experiments and comparison of the results with commercial software أMARCؤ. The possible applications of this code are optimization of industrial quenching processes by controlling the evolution of internal stresses and dimensional changes.

Citation Formats

P. Karpuz, C. Simsir, C. H. Gür, and H. S. Kim, “Finite element investigation of the effect of hardening behavior of alloys on equal channel angular pressing performance,” presented at the 4th International Conference on Nanomaterials by Severe Plastic Deformation, Goslar, Germany, 2008, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/37312.