Multiple mechanisms in the thermally activated plastic flow of tantalum

Journal Article · Wed May 01 00:00:00 EDT 1996 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.50649· OSTI ID:561701

Gourdin, W H; Lassila, D H ^[1]

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1. Chemistry Materials Science Department, University of California, Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)

We argue that many of the features of the plastic flow behavior of tantalum can be described by a model that incorporates a two-component Peierls-type mechanism and an fcc-like obstacle mechanism in series. We compare the results of calculations based on such a model with flow data for unalloyed tantalum over a wide range of strain rates and a modest range of temperatures. {copyright} {ital 1996 American Institute of Physics.}

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 561701
• Report Number(s): CONF-950846-; ISSN 0094-243X; TRN: 98:000992
• Journal Information: AIP Conference Proceedings, Vol. 370, Issue 1; Conference: American Physical Society biennial conference on shock compression of condensed matter, Seattle, WA (United States), 13-18 Aug 1995; Other Information: PBD: May 1996
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
TANTALUM
PLASTICITY
STRAIN RATE
TEMPERATURE DEPENDENCE
DISLOCATIONS