Production and characterization of nanostructured Ti-based intermetallics

V. Garibay-Febles; H. A. Calderón; A. Cabrera; M. Umemoto; J. G. Cabañas-Moreno; K. Tsuchiya

Production and characterization of nanostructured Ti-based intermetallics

V. Garibay-Febles, H. A. Calderón, A. Cabrera, M. Umemoto, J. G. Cabañas-Moreno, K. Tsuchiya

Research output: Contribution to journal › Conference article › peer-review

Abstract

TiAl-X and TiAl₃-X alloys are produced by mechanical milling and sintered by a plasma assisted technique (X represents either Fe, Mn or Cr). Milling of elemental powder mixtures produces a homogeneous mixture consisting of crystallites immersed in an amorphous matrix. Sintering gives rise to a recrystallized single phase microstructure in the TiAl₃-X alloys with a nanometric grain size. Alloys in the system TiAl-X also show a fine grain size after consolidation. Two phases (α₂ (DO₁₉) and γ (Ll₀) are found finely dispersed. Compression test are used to investigate the deformation mechanism in the consolidated alloys. The TiAl₃-X alloys show no plasticity; fracture appears before any plastic behavior is observed at high stress levels. In the TiAl-X alloys plasticity is found in all cases together with high yield stresses. Analysis of the fracture surfaces (TiAl₃ alloys) and dislocation structures is used to discuss the deformation mechanism.

Original language	English
Pages (from-to)	II/-
Journal	Materials Science Forum
Volume	343
State	Published - 2000
Externally published	Yes
Event	ISMANAM-99: The International Symposium on Metastable, Mechanically Alloyed and Nanocrystalline Materials - Dresden, Ger Duration: 30 Aug 1999 → 3 Sep 1999

Cite this

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title = "Production and characterization of nanostructured Ti-based intermetallics",

abstract = "TiAl-X and TiAl3-X alloys are produced by mechanical milling and sintered by a plasma assisted technique (X represents either Fe, Mn or Cr). Milling of elemental powder mixtures produces a homogeneous mixture consisting of crystallites immersed in an amorphous matrix. Sintering gives rise to a recrystallized single phase microstructure in the TiAl3-X alloys with a nanometric grain size. Alloys in the system TiAl-X also show a fine grain size after consolidation. Two phases (α2 (DO19) and γ (Ll0) are found finely dispersed. Compression test are used to investigate the deformation mechanism in the consolidated alloys. The TiAl3-X alloys show no plasticity; fracture appears before any plastic behavior is observed at high stress levels. In the TiAl-X alloys plasticity is found in all cases together with high yield stresses. Analysis of the fracture surfaces (TiAl3 alloys) and dislocation structures is used to discuss the deformation mechanism.",

author = "V. Garibay-Febles and Calder{\'o}n, {H. A.} and A. Cabrera and M. Umemoto and Caba{\~n}as-Moreno, {J. G.} and K. Tsuchiya",

year = "2000",

language = "Ingl{\'e}s",

volume = "343",

pages = "II/--",

journal = "Materials Science Forum",

issn = "0255-5476",

publisher = "Trans Tech Publications",

note = "ISMANAM-99: The International Symposium on Metastable, Mechanically Alloyed and Nanocrystalline Materials ; Conference date: 30-08-1999 Through 03-09-1999",

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TY - JOUR

T1 - Production and characterization of nanostructured Ti-based intermetallics

AU - Garibay-Febles, V.

AU - Calderón, H. A.

AU - Cabrera, A.

AU - Umemoto, M.

AU - Cabañas-Moreno, J. G.

AU - Tsuchiya, K.

PY - 2000

Y1 - 2000

N2 - TiAl-X and TiAl3-X alloys are produced by mechanical milling and sintered by a plasma assisted technique (X represents either Fe, Mn or Cr). Milling of elemental powder mixtures produces a homogeneous mixture consisting of crystallites immersed in an amorphous matrix. Sintering gives rise to a recrystallized single phase microstructure in the TiAl3-X alloys with a nanometric grain size. Alloys in the system TiAl-X also show a fine grain size after consolidation. Two phases (α2 (DO19) and γ (Ll0) are found finely dispersed. Compression test are used to investigate the deformation mechanism in the consolidated alloys. The TiAl3-X alloys show no plasticity; fracture appears before any plastic behavior is observed at high stress levels. In the TiAl-X alloys plasticity is found in all cases together with high yield stresses. Analysis of the fracture surfaces (TiAl3 alloys) and dislocation structures is used to discuss the deformation mechanism.

AB - TiAl-X and TiAl3-X alloys are produced by mechanical milling and sintered by a plasma assisted technique (X represents either Fe, Mn or Cr). Milling of elemental powder mixtures produces a homogeneous mixture consisting of crystallites immersed in an amorphous matrix. Sintering gives rise to a recrystallized single phase microstructure in the TiAl3-X alloys with a nanometric grain size. Alloys in the system TiAl-X also show a fine grain size after consolidation. Two phases (α2 (DO19) and γ (Ll0) are found finely dispersed. Compression test are used to investigate the deformation mechanism in the consolidated alloys. The TiAl3-X alloys show no plasticity; fracture appears before any plastic behavior is observed at high stress levels. In the TiAl-X alloys plasticity is found in all cases together with high yield stresses. Analysis of the fracture surfaces (TiAl3 alloys) and dislocation structures is used to discuss the deformation mechanism.

UR - http://www.scopus.com/inward/record.url?scp=12944265599&partnerID=8YFLogxK

M3 - Artículo de la conferencia

AN - SCOPUS:12944265599

SN - 0255-5476

VL - 343

SP - II/-

JO - Materials Science Forum

JF - Materials Science Forum

T2 - ISMANAM-99: The International Symposium on Metastable, Mechanically Alloyed and Nanocrystalline Materials

Y2 - 30 August 1999 through 3 September 1999

ER -

Production and characterization of nanostructured Ti-based intermetallics

Abstract

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