Deformation and fracture of TiAl + W at elevated temperatures [electronic resource].
- Washington, D.C. : United States. Dept. of Energy, 1990. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- Pages: (10 pages) : digital, PDF file
- Additional Creators:
- Los Alamos National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
- The ternary alloy, Ti - 49 at% Al -2 at. % W, was produced using Rotating Electrode Powder (REP) compacted by hot extrusion. The tensile properties of this alloy (strength, ductility and fracture mode) were studied from room temperature to 900°C. Constant load creep properties were measured from 700 to 900°C and analyzed using conventional power law equations to calculate the stress exponent and activation energy. These parameters were approximately 4 and 400 KJ/mole respectively. TEM examination showed that the W was held in solid solution during the tensile and creep deformation when the material was tested in the as-extruded' condition. These results are interpreted as evidence for solid solution strengthening of the TiAl matrix by the W solute. 13 refs., 3 figs., 4 tabs.
- Published through SciTech Connect., 01/01/1990., "la-ur-90-25", " conf-900425--1", "DE90006490", 4. international conference on creep and fracture of engineering materials and structures, Swansea (UK), 1-6 Apr 1990., and Martin, P.L.; Lipsitt, H.A. . Dept. of Mechanical Mate.
- Funding Information:
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