Modeling the mechanical behavior of tantalum

Bing Jean Lee, Kenneth S. Vecchio, Said Ahzi, Scott Schoenfeld

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

A crystal plasticity model is proposed to simulate the large plastic deformation and texture evolution in tantalum over a wide range of strain rates. In the model, a modification of the viscoplastic power law for slip and a Taylor interaction law for polycrystals are employed, which account for the effects of strain hardening, strain-rate hardening, and thermal softening. A series of uniaxial compression tests in tantalum at strain rates ranging from 10-3 to 104 s-1 were conducted and used to verify the model's simulated stress-strain response. Initial and evolved deformation textures were also measured for comparison with predicted textures from the model. Applications of this crystal plasticity model are made to examine the effect of different initial crystallographic textures in tantalum subjected to uniaxial compression deformation or biaxial tensile deformation.

Original languageEnglish
Pages (from-to)113-122
Number of pages10
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume28
Issue number1
Publication statusPublished - 1997
Externally publishedYes

Fingerprint

Tantalum
tantalum
textures
Textures
strain rate
Strain rate
plastic properties
Plasticity
tensile deformation
Crystals
compression tests
strain hardening
Polycrystals
polycrystals
Strain hardening
hardening
softening
plastic deformation
crystals
Hardening

ASJC Scopus subject areas

  • Materials Science(all)
  • Metals and Alloys

Cite this

Modeling the mechanical behavior of tantalum. / Lee, Bing Jean; Vecchio, Kenneth S.; Ahzi, Said; Schoenfeld, Scott.

In: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, Vol. 28, No. 1, 1997, p. 113-122.

Research output: Contribution to journalArticle

Lee, Bing Jean ; Vecchio, Kenneth S. ; Ahzi, Said ; Schoenfeld, Scott. / Modeling the mechanical behavior of tantalum. In: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science. 1997 ; Vol. 28, No. 1. pp. 113-122.
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