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Severe plastic deformation in Gum Metal with composition at the structural stability limit

  • Tadahiko Furuta , Masashi Hara , Zenji Horita and Shigeru Kuramoto
Published/Copyright: June 11, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 100 Issue 9

Abstract

The effects of severe plastic deformation on the mechanical properties and deformation behavior of Gum Metal with a nominal composition of Ti-36Nb-2Ta-3Zr-0.3O (mass.%) were investigated using high-pressure torsion (HPT). Applying the HPT process, the alloy shows ultra-low Young's modulus, high strength, extended elastic limit, high ductility, and very low hardening during HPT. The tensile strength of Gum Metal increases with increasing equivalent strain, while work hardening is much smaller than reported values for other common metallic materials. The deformation structure is composed of ultrafine grains produced by transgranular shear through application of HPT. These results suggest that the strengthening mechanism of Gum Metal is attributable to a unique plastic deformation which operates in the region where the local stress reaches values close to that of ideal strength.

Keywords: Titanium alloy; Severe plastic deformation; Dislocation; Structural stability; Ideal strength
* Correspondence address, Senior Researcher Dr. Tadahiko Furuta Aichi, 480-1192, Japan Tel.: +81 561 71 7438 Fax: +81 561 63 6135 E-mail:

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Received: 2009-1-19
Accepted: 2009-5-12
Published Online: 2013-06-11
Published in Print: 2009-09-01

© 2009, Carl Hanser Verlag, München

Articles in the same Issue

  1. Contents
  2. Contents
  3. History
  4. Pierre Auger – Lise Meitner: Comparative contributions to the Auger effect
  5. Surface and grain-boundary segregation studied by quantitative AES and XPS
  6. High temperature mechanical spectroscopy of fine-grained ceramics
  7. The effect of electro-thermal fatigue on the structure of power electronic devices. Micro-structural evolution of the metallization layer
  8. f-Element hydrides: structure and magnetism
  9. Basic
  10. Hydrogen as a probe into 5f-magnetism
  11. Magnetism in PrPdSn and NdPdSn studied on single crystals
  12. Magnetic properties of fcc Ni-based transition metal alloys
  13. X-ray characterization of magnetic digital alloys
  14. Are RENiAl hydrides metallic?
  15. HoZn5Al3: rare-earth magnetism in a new structure type
  16. The influence of substitutions on the magnetocaloric effect in RCo2 compounds
  17. Thickness shear modes and magnetoelastic waves in a bi-layered structure: magnetic film–non-magnetic substrate
  18. Electrochemical properties of fine-grained AZ31 magnesium alloy
  19. Severe plastic deformation in Gum Metal with composition at the structural stability limit
  20. Applied
  21. Structural, magnetic, and transport properties of quantum well GaAs/δ-Mn/GaAs/InxGa1–xAs/GaAs heterostructures
  22. Effect of co-doping by Pb and La on structural and magnetic properties of Bi2212 superconducting ceramics
  23. Magnetic properties of the hydrogenated unconventional superconductor UCoGe–H
  24. Electrophoresis deposition of metal nanoparticles with reverse micelles onto InP
  25. Electronic structure and electric field gradient calculations for the Zr2Ni intermetallic compound
  26. Solution growth of the Gd–Cu–Al systems in the low-gadolinium concentration range
  27. Low-temperature specific heat of selected ceramics
  28. Novel behaviors in rare-earth-filled skutterudites studied by bulk-sensitive photoemission spectroscopy
  29. Charge transport in photosensitive nanocrystalline PbTe(In) films in an alternating electric field
  30. Enrichment and depletion of alloying elements in surface layers of iron base alloys annealed under different conditions
  31. Notifications
  32. Personal
https://doi.org/10.3139/146.110184
Keywords for this article
Titanium alloy; Severe plastic deformation; Dislocation; Structural stability; Ideal strength

Articles in the same Issue

  1. Contents
  2. Contents
  3. History
  4. Pierre Auger – Lise Meitner: Comparative contributions to the Auger effect
  5. Surface and grain-boundary segregation studied by quantitative AES and XPS
  6. High temperature mechanical spectroscopy of fine-grained ceramics
  7. The effect of electro-thermal fatigue on the structure of power electronic devices. Micro-structural evolution of the metallization layer
  8. f-Element hydrides: structure and magnetism
  9. Basic
  10. Hydrogen as a probe into 5f-magnetism
  11. Magnetism in PrPdSn and NdPdSn studied on single crystals
  12. Magnetic properties of fcc Ni-based transition metal alloys
  13. X-ray characterization of magnetic digital alloys
  14. Are RENiAl hydrides metallic?
  15. HoZn5Al3: rare-earth magnetism in a new structure type
  16. The influence of substitutions on the magnetocaloric effect in RCo2 compounds
  17. Thickness shear modes and magnetoelastic waves in a bi-layered structure: magnetic film–non-magnetic substrate
  18. Electrochemical properties of fine-grained AZ31 magnesium alloy
  19. Severe plastic deformation in Gum Metal with composition at the structural stability limit
  20. Applied
  21. Structural, magnetic, and transport properties of quantum well GaAs/δ-Mn/GaAs/InxGa1–xAs/GaAs heterostructures
  22. Effect of co-doping by Pb and La on structural and magnetic properties of Bi2212 superconducting ceramics
  23. Magnetic properties of the hydrogenated unconventional superconductor UCoGe–H
  24. Electrophoresis deposition of metal nanoparticles with reverse micelles onto InP
  25. Electronic structure and electric field gradient calculations for the Zr2Ni intermetallic compound
  26. Solution growth of the Gd–Cu–Al systems in the low-gadolinium concentration range
  27. Low-temperature specific heat of selected ceramics
  28. Novel behaviors in rare-earth-filled skutterudites studied by bulk-sensitive photoemission spectroscopy
  29. Charge transport in photosensitive nanocrystalline PbTe(In) films in an alternating electric field
  30. Enrichment and depletion of alloying elements in surface layers of iron base alloys annealed under different conditions
  31. Notifications
  32. Personal
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