A new constitutive analysis of hexagonal close-packed metal in equal channel angular pressing by crystal plasticity finite element method | Zendy

Hejie Li | Zendy; Andreas Öchsner | Zendy; Prasad Yarlagadda | Zendy; Yin Xiao | Zendy; Tsuyoshi Furushima | Zendy; Dongbin Wei | Zendy; Zhengyi Jiang | Zendy; Ken-ichi Manabe | Zendy

Open Access

A new constitutive analysis of hexagonal close-packed metal in equal channel angular pressing by crystal plasticity finite element method

Author(s) -

Hejie Li,

Andreas Öchsner,

Prasad Yarlagadda,

Yin Xiao,

Tsuyoshi Furushima,

Dongbin Wei,

Zhengyi Jiang,

Ken-ichi Manabe

Publication year - 2017

Publication title -

continuum mechanics and thermodynamics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.85

H-Index - 52

eISSN - 1432-0959

pISSN - 0935-1175

DOI - 10.1007/s00161-017-0583-9

Subject(s) - constitutive equation , materials science , structural material , plasticity , finite element method , pressing , slip (aerodynamics) , deformation (meteorology) , alloy , deformation mechanism , close packing of equal spheres , mechanics , composite material , geometry , thermodynamics , physics , microstructure , mathematics

Most of hexagonal close-packed (HCP) metals are lightweight metals. With the increasing application of light metal products, the production of light metal is increasingly attracting the attentions of researchers worldwide. To obtain a better understanding of the deformation mechanism of HCP metals (especially for Mg and its alloys), a new constitutive analysis was carried out based on previous research. In this study, combining the theories of strain gradient and continuum mechanics, the equal channel angular pressing process is analyzed and a HCP crystal plasticity constitutive model is developed especially for Mg and its alloys. The influence of elevated temperature on the deformation mechanism of the Mg alloy (slip and twin) is novelly introduced into a crystal plasticity constitutive model. The solution for the new developed constitutive model is established on the basis of the Lagrangian iterations and Newton Raphson simplification

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