Modeling the mechanical behavior of tantalum

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

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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

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ASJC Scopus subject areas

  • Materials Science(all)
  • Metals and Alloys

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