High-temperature strength and ductility increases of Ti-Mo-Al alloys by step aging

  • M. Hida
  • S. Weissmann
Alloy Phases and Structure


Step-aging programs, based on principles of particle-dislocation interactions, were developed systematically to obtain increases in the high-temperature strength and ductility properties of Ti-7 at. pct Mo-Al alloys. A triple-step aging program applied to Ti-7 Mo-16 Al produced a yield stress σ0.2 = 1,500 MN/m2, elongation to fracture ε F = 4 pct at room temperature, and σ0.2 = 900 MN/m2, ε F = 12 pct at 600°C. A two-step aging program resulted in σ0.2 = 1,350 MN/m2, ε F = 5 pct at room temperature; σ0.2 = 800 MN/m2, ε F = 20 pct at 600°C.


  1. 1.
    T. Hamajima, G. Lütjering, and S. Weissmann:Met. Trans., 1972, vol. 3, pp. 2805–10.CrossRefGoogle Scholar
  2. 2.
    T. Hamajima, G. Lütjering, and S. Weissmann:Met. Trans., 1973, vol. 4, pp. 847–56.CrossRefGoogle Scholar
  3. 3.
    T. Hamajima and S. Weissmann:Met. Trans. A, 1975, vol. 6A, pp. 1535–39.CrossRefGoogle Scholar
  4. 4.
    M. G. Mendiratta, G. Lütjering, and S. Weissmann:Met. Trans., 1971, vol. 2, pp. 2599–605.CrossRefGoogle Scholar
  5. 5.
    M. J. Blackburn and J. C. Williams:Trans. TMS-AIME, 1967, vol. 239, p. 287.Google Scholar
  6. 6.
    D. R. Muzyka and G. N. Maniar:Metallography: A Practical Tool for Correlating the Structure and Properties of Materials, p. 198, American Society for Testing and Materials, Philadelphia, 1974.CrossRefGoogle Scholar
  7. 7.
    M. A. Clegg and J. A. Lund:Met. Trans., 1971, vol. 2, pp. 2495–507.CrossRefGoogle Scholar

Copyright information

© American Society for Metals, The Melallurgical Society of AIME 1975

Authors and Affiliations

  • M. Hida
    • 1
  • S. Weissmann
    • 2
  1. 1.School of EngineeringOkayama UniversityOkayamaJapan
  2. 2.Materials Research Laboratory, College of EngineeringRutgers UniversityNew Brunswick

Personalised recommendations