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Strain rate dependency on deformation texture for pure polycrystalline tantalum

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Veröffentlicht/Copyright: 23. Mai 2013
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International Journal of Materials Research
Aus der Zeitschrift International Journal of Materials Research Band 98 Heft 9

Abstract

The deformation texture of pure polycrystalline tantalum was characterized in the range of strain rates from 10−3 ∼10+3 s−1 at room temperature. Quasi-static tests were carried out on an MTS servohydraulic machine, whereas dynamic tests were carried out using a split Hopkinson pressure bar. Texture measurements were done using the electron backscattered diffraction set-up in the scanning electron microscope chamber. It was observed that the deformation texture was unaffected qualitatively by the strain rate variations, and was correlated to the insensitivity of the hardening behavior at different strain rates. Strain softening at high strain rate seemed to sharpen the texture.

Keywords: Tantalum; Texture; Shear compression specimen (SCS); Strain rate; Strain hardening
* Correspondence address, Dr. Abhishek Bhattacharyya, Department of Aeronautics and Mechanical Engineering, California, Institute of Technology, Pasadena, CA 91125, USA, Tel.: +1 626 395 4748, Fax: +1 626 449 2677, E-mail:

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Received: 2006-4-13
Accepted: 2007-6-19
Published Online: 2013-05-23
Published in Print: 2007-09-01

© 2007, Carl Hanser Verlag, München

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  4. Computational Thermochemistry
  5. Gunnar Eriksson 65 years
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https://doi.org/10.3139/146.101534
Schlagwörter für diesen Artikel
Tantalum; Texture; Shear compression specimen (SCS); Strain rate; Strain hardening

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Editorial
  4. Computational Thermochemistry
  5. Gunnar Eriksson 65 years
  6. Basic
  7. Vegard's law: a fundamental relation or an approximation?
  8. Is it a compound or cluster energy formalism?
  9. Post-optimization elimination of inverted miscibility gaps
  10. Thermodynamic evaluation of the Au–Sn system
  11. Applications of thermodynamic calculations to Mg alloy design: Mg–Sn based alloy development
  12. Thermodynamic modeling of the CoO–SiO2 and CoO–FeO–Fe2O3–SiO2 systems
  13. Scheil–Gulliver simulation with partial redistribution of fast diffusers and simultaneous solid–solid phase transformations
  14. Analysis of X-ray extinction due to homogeneously distributed dislocations – Bragg case
  15. Applied
  16. Thermodynamic modelling in the ZrO2–La2O3–Y2O3–Al2O3 system
  17. Thermodynamic optimisation of the FeO–Fe2O3–SiO2 (Fe–O–Si) system with FactSage
  18. Reassessment of the Al–Mn system and a thermodynamic description of the Al–Mg–Mn system
  19. Application of FactSage thermodynamic modeling of recycled slags (Al2O3–CaO–FeO–Fe2O3–SiO2–PbO–ZnO) in the treatment of wastes from end-of-life-vehicles
  20. Bio-inspired syntheses of ZnO-protein composites
  21. Preparation and characterization of cobalt–bismuth nano- and micro-particles
  22. Strain rate dependency on deformation texture for pure polycrystalline tantalum
  23. Notifications
  24. DGM News
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