Publication detail

Numerical study of stress distribution and size effect during AZ31 nanoindentation

ŠIŠKA, F. GUO, T. STRATIL, L. ČÍŽEK, J. BARNETT, M.

Original Title

Numerical study of stress distribution and size effect during AZ31 nanoindentation

Type

journal article in Web of Science

Language

English

Original Abstract

A numerical study of the nano-indentation of the AZ31 alloy was performed in order to analyze the stress fields at the onset of twinning. The model considers indentation of the (10-10) and (1-210) planes by a spherical indenter with radii of 5, 10 and 50 um. Material behavior is described by a crystal plasticity constitutive model with three critical resolved shear stresses for different slip modes. The CRSS values were obtained by fitting to experimental load-displacement curves. The stress and strain distributions are analyzed with a view to understanding twin initiation. The twins initiate during indentation at the stress level order of magnitude higher compare to uniaxial tests.

Keywords

Magnesium alloys; Nanoindentation; Twinning; FEM; Crystal plasticity

Authors

ŠIŠKA, F.; GUO, T.; STRATIL, L.; ČÍŽEK, J.; BARNETT, M.

Released

1. 1. 2017

Publisher

Elsevier

Location

USA

ISBN

0927-0256

Periodical

COMPUTATIONAL MATERIALS SCIENCE

Year of study

126

Number

1

State

Kingdom of the Netherlands

Pages from

393

Pages to

399

Pages count

7

URL

http://www.sciencedirect.com/science/article/pii/S0927025616305080

BibTex

@article{BUT132335,
  author="Filip {Šiška} and Tingting {Guo} and Luděk {Stratil} and Jan {Čížek} and Matthew {Barnett}",
  title="Numerical study of stress distribution and size effect during AZ31 nanoindentation",
  journal="COMPUTATIONAL MATERIALS SCIENCE",
  year="2017",
  volume="126",
  number="1",
  pages="393--399",
  doi="10.1016/j.commatsci.2016.10.012",
  issn="0927-0256",
  url="http://www.sciencedirect.com/science/article/pii/S0927025616305080"
}