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Assessment of the Compositional Influences on the Toughness of TiCr2-Base Laves Phase Alloys
Materials Research Society Symposium Proceedings
  • Katherine C. Chen, Los Alamos National Laboratory
  • Samuel M. Allen, Massachusetts Institute of Technology
  • James D. Livingston, Massachusetts Institute of Technology
Publication Date
1-1-1996
Abstract

Systematic studies of alloys based on TiCr, have been performed in order to improve the toughness of Laves phase intermetallics. The extent to which alloy compositions and annealing treatments influence the toughness was quantified by Vickers indentation. The single-phase Laves behavior was first established by studying stoichiometric and nonstoichiometric TiCr,. Next, alloying effects were investigated with ternary Laves phases based on TiCr2. Different microstructures of two-phase alloys consisting of (Ti,Cr)-bcc+TiCr2, were also examined. Various toughening theories based on vacancies, site-substitutions, crystal structure (C14, C36, or Cl5) stabilization, and the presence of a second phase were evaluated. The most effective factors improving the toughness of TiCr2, were determined, and toughening mechanisms are suggested.

Citation Information
Katherine C. Chen, Samuel M. Allen and James D. Livingston. "Assessment of the Compositional Influences on the Toughness of TiCr2-Base Laves Phase Alloys" Materials Research Society Symposium Proceedings (1996)
Available at: http://works.bepress.com/kcchen/24/