Mechanical Properties of Tantalum and Niobium Base Alloys.
Final rept. Oct 65-Dec 68,
LIVERPOOL UNIV (UNITED KINGDOM) DEPT OF METALLURGY AND MATERIALS SCIENCE
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The critical resolved shear stress of tantalum base alloys was measured from -196C to 300C and of niobium base alloys from -196C to 1800C. The behavior at low temperatures is complex. Certain features can, however, be recognized as significant Both indirect and direct interactions contribute to the critical resolved shear stress. At high temperatures solid solution hardening is associated with an elastic interaction between solute atoms and dislocations. The modulus misfit parameter is more important than the size misfit parameter in describing the hardening. Author
- Metallurgy and Metallography