The Thermally Activated Solid-Solution Hardening of the Ternary System: Niobium-Molybdenum-Tungsten

Authors

Donald Koss, Michigan Technological University
John Hack, Michigan Technological University

Document Type

Article

Publication Date

5-1975

Department

Department of Materials Science and Engineering

Abstract

The temperature dependence of the flow stress of ultra-high-vacuumdegassed Nb-Mo-W single crystals has been investigated between 77 and 900 K. Tests of alloys containing up to 9.4 at.% (Mo+W) show that the thermal component of the flow stress exhibits little or no increase with increasing ternary-solute content for most of the alloys tested. Solid-solution softening is observed in the Nb-4.2Mo-W alloys at 77 K. The results are interpreted utilizing a phenomenological analysis of the solid-solution hardening increments. The analysis of the results suggests that a non-random solute distribution is responsible for reducing the thermally-activated, flow-stress component, especially in concentrated alloys with a Mo to W ratio of near unity.

Publisher's Statement

© 1975

Publication Title

Journal of The Less-Common Metals

Recommended Citation

Koss, D., & Hack, J. (1975). The Thermally Activated Solid-Solution Hardening of the Ternary System: Niobium-Molybdenum-Tungsten. Journal of The Less-Common Metals, 40(3), 305-311. http://doi.org/10.1016/0022-5088(75)90075-2
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/5386