A self-consistent anisotropic approach for the simulation of plastic deformation and texture development of polycrystals: Application to zirconium alloys

Journal Article · Wed Sep 01 00:00:00 EDT 1993 · Acta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-7151(93)90130-K· OSTI ID:6303142

Lebensohn, R A; Tome, C N ^[1]

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1. Inst. de Fisica Rosario, Rosario (Argentina)

The authors present in this work a visco-plastic self-consistent (VPSC) anisotropic approach for modeling the plastic deformation of polycrystals, together with a thorough discussion of the assumptions involved and the range of application of such approach. They use the VPSC model for predicting texture development during rolling and axisymmetric deformation of zirconium alloys, and to calculate the yield locus and the Lankford coefficient of rolled Zircaloy sheet. They compare the results with experimental data and find that they are in good agreement with the available experimental evidence. They also compare the VPSC prediction with the ones of a Full Constraints approach and observe that they differ both quantitatively and qualitatively: according with the predictions of the VPSC scheme, deformation is accommodated mostly by the soft systems, the twinning activity is much lower, and fewer systems are active, in average, per grain. These results are a consequence of having accounted for the grain interaction with its surroundings, which is a crucial aspect when modeling plastically anisotropic materials.

• OSTI ID: 6303142
• Journal Information: Acta Metallurgica et Materialia; (United States), Vol. 41:9; ISSN 0956-7151
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ZIRCALOY
DEFORMATION
TEXTURE
ANISOTROPY
COMPARATIVE EVALUATIONS
DATA
GRAIN ORIENTATION
MATHEMATICAL MODELS
PLASTICITY
POLYCRYSTALS
REACTOR MATERIALS
SELF-CONSISTENT FIELD
ALLOYS
CRYSTALS
EVALUATION
INFORMATION
MATERIALS
MECHANICAL PROPERTIES
MICROSTRUCTURE
ORIENTATION
ZIRCONIUM ALLOYS
ZIRCONIUM BASE ALLOYS
360102* - Metals & Alloys- Structure & Phase Studies
360103 - Metals & Alloys- Mechanical Properties