Morphology and Grain Orientation Dependent Localization and Necking in Dual-phase Steels

Download

1-s2.0-S2452321619305797-main.pdf

Date

2019-01-01

Author

Çakmak, Serhat Onur
Yalçınkaya, Tuncay

Metadata

Show full item record

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

Item Usage Stats

167
views

100
downloads

This paper studies the plastic deformation, localization and the necking behavior of polycrystalline dual phase (DP) steels, with different martensite volume fractions, and ferrite orientation distributions, through crystal plasticity finite element method. The grain structure of the full size micron-scale polycrystalline samples is built through Voronoi tesselation and the specimens are deformed under uniaxial loading condition. For the modelling of martensite phase J2 plasticity with isotropic hardening is employed while in randomly oriented ferrite grains the crystal plasticity theory works. The material parameters are identified with respect to uniaxial tensile experimental data using a fully periodic RVE with enough number of ferrite grains. The attention is focused on the effect of the martensite morphology and the ferrite orientation distribution on the formation of the shear bands and then the necking of the sample. (C) 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review line: Peer-review under responsibility of the 1st International Workshop on Plasticity, Damage and Fracture of Engineering Materials organizers.

Subject Keywords

Dual-Phase Steel, Crystal Plasticity, Necking, Shear Bands

URI

https://hdl.handle.net/11511/30612

DOI

https://doi.org/10.1016/j.prostr.2019.12.105

Collections

Graduate School of Natural and Applied Sciences, Conference / Seminar

Suggestions

OpenMETU
Core

Modeling of localization and necking in dual phase steels through polycrystalline plasticity Çakmak, Serhat Onur.; Yalçınkaya, Tuncay; Department of Aerospace Engineering (2020) In this thesis, the effect of ferrite crystallographic orientation distribution and other microstructural parameters such as martensite morphology, martensite volume fraction, and ferrite grain size on the plastic deformation, localization, and the necking behavior of dual-phase steels are investigated. Two different type of finite element models, i.e. full size micron-scale polycrystalline samples and polycrystalline Representative Volume Element (RVEs) are built through Voronoi tessellation. Local crystal...
A Micromechanics Based Numerical Investigation of Dual Phase Steels Yalçınkaya, Tuncay; Çakmak, Serhat Onur (Elsevier BV; 2019-01-01) The aim of this paper is to investigate the effects of microstructural parameters such as the volume fraction, morphology and spatial distribution of the martensite phase and the grain size of the ferrite phase on the plasticity and localized deformation of dual-phase (DP) steels. For this purpose, Voronoi based representative volume elements (RVEs) are subjected to proportional loading with constant stress triaxility. Two alternative approaches are employed in a comparative way to model the plastic respons...
Preparation and thermal characterization of poly(2-vinylpyridine) copolymers coordinated to Cr nanoparticles Öztürk, Yurdagül; Kayran, Ceyhan; Hacaloğlu, Jale (2015-06-01) In this study, polystyrene-block-poly(2-vinylpyridine), PS-b-P2VP, polyisoprene-block-poly(2-vinylpyridne), PI-b-P2VP and poly(methyl metacrylate)-block-poly(2-vinylpyridine), PMMA-b-P2VP, coordinated to Cr metal were synthesized and characterized by Fourier transform infrared, transmission electron microscopy and direct pyrolysis mass spectrometry techniques. Both thermal degradation mechanism and thermal stability of P2VP blocks were affected by the coordination of Cr nanoparticles to nitrogen of pyridine...
Structural and Thermoelectronic Properties of Chalcopyrite MgSiX2 (X = P, As, Sb) Kocak, B.; ÇİFTCİ, YASEMİN; Sürücü, Gökhan (2017-01-01) We have explored the structural, electronic, optical, and mechanical properties of the magnesium-based chalcopyrites MgSiP2, MgSiAs2, and MgSiSb2 using density functional theory with five different generalized gradient approximation (GGA) functionals: Perdew-Wang (1991), Perdew-Burke-Ernzerhof, revised Perdew-Burke-Ernzerhof, modified Perdew-Burke-Ernzerhof for solids, and Armiento-Mattson (2005) as well as the local density approximation. Change of the constituent element from P to Sb significantly affecte...
Interface and material properties of wide band gap a-SiCx:H thin films for solar cell applications Donercark, Ergi; Sedani, Salar H.; Kabaçelik, Ismail; Salimi, Arghavan; Turan, Raşit (2022-01-01) © 2021 Elsevier LtdA thin intrinsic hydrogenated amorphous silicon carbide ((i) a-SiCx:H) layer with a wide band gap attracts attention as an alternative passivation layer instead of intrinsic hydrogenated amorphous silicon ((i) a-Si:H) for heterojunction photovoltaic applications. The optical band gap of (i) a-SiCx:H can be widened up to 2.24eV. An increase in the optical band gap makes this layer appropriate as the window material by reducing the parasitic absorption. However, the deposition regime should...

Citation Formats

S. O. Çakmak and T. Yalçınkaya, “Morphology and Grain Orientation Dependent Localization and Necking in Dual-phase Steels,” 2019, vol. 21, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/30612.