Detail publikačního výsledku

Numerical analysis of twin thickening process in magnesium alloys

ŠIŠKA, F.; STRATIL, L.; ČÍŽEK, J.; GHADERI, A.; BARNETT, M.

Originální název

Numerical analysis of twin thickening process in magnesium alloys

Anglický název

Numerical analysis of twin thickening process in magnesium alloys

Druh

Článek WoS

Originální abstrakt

A finite element study of the stress field evolution around the View the MathML source{101-2} tensile twin of different thickness in magnesium alloy is performed. The system is represented by the 2D models of one and three elastic elliptical inclusions with different aspect ratios surrounded by the plastic matrix. Anisotropic elasticity and crystal plasticity theory are used to describe the material behavior. Numerical results for single inclusion overestimate the initial stress for the stable twin aspect ratio by a factor of two compared to the experimental results. Multiple inclusions case obtains values closer to the experimental ones. Therefore it is concluded that the process of twin thickening cannot be solved within the analysis of the single inclusion and an interaction between twins in the same and neighboring grains plays a crucial role during the twin thickening process.

Anglický abstrakt

A finite element study of the stress field evolution around the View the MathML source{101-2} tensile twin of different thickness in magnesium alloy is performed. The system is represented by the 2D models of one and three elastic elliptical inclusions with different aspect ratios surrounded by the plastic matrix. Anisotropic elasticity and crystal plasticity theory are used to describe the material behavior. Numerical results for single inclusion overestimate the initial stress for the stable twin aspect ratio by a factor of two compared to the experimental results. Multiple inclusions case obtains values closer to the experimental ones. Therefore it is concluded that the process of twin thickening cannot be solved within the analysis of the single inclusion and an interaction between twins in the same and neighboring grains plays a crucial role during the twin thickening process.

Klíčová slova

Magnesium alloy; Twinning; FEM; Crystal plasticity

Klíčová slova v angličtině

Magnesium alloy; Twinning; FEM; Crystal plasticity

Autoři

ŠIŠKA, F.; STRATIL, L.; ČÍŽEK, J.; GHADERI, A.; BARNETT, M.

Rok RIV

2018

Vydáno

01.02.2017

Nakladatel

Elsevier

Místo

USA

ISSN

1359-6454

Periodikum

ACTA MATERIALIA

Svazek

124

Číslo

1

Stát

Spojené státy americké

Strany od

9

Strany do

16

Strany počet

8

URL

http://www.sciencedirect.com/science/article/pii/S135964541630845X

BibTex

@article{BUT132336,
  author="Filip {Šiška} and Luděk {Stratil} and Jan {Čížek} and Alireza {Ghaderi} and Matthew {Barnett}",
  title="Numerical analysis of twin thickening process in magnesium alloys",
  journal="ACTA MATERIALIA",
  year="2017",
  volume="124",
  number="1",
  pages="9--16",
  doi="10.1016/j.actamat.2016.10.068",
  issn="1359-6454",
  url="http://www.sciencedirect.com/science/article/pii/S135964541630845X"
}