Detail publikace

Numerical study of stress distribution and size effect during AZ31 nanoindentation

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

Anglický název

Numerical study of stress distribution and size effect during AZ31 nanoindentation

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

en

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova anglicky

Magnesium alloys; Nanoindentation; Twinning; FEM; Crystal plasticity

Vydáno

01.01.2017

Nakladatel

Elsevier

Místo

USA

ISSN

0927-0256

Ročník

126

Číslo

1

Strany od–do

393–399

Počet stran

7

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",
  year="2017",
  volume="126",
  number="1",
  month="January",
  pages="393--399",
  publisher="Elsevier",
  address="USA",
  issn="0927-0256"
}