The Effect of Tungsten on the Mechanical Properties of Tantalum

[+] Author and Article Information
C. L. Briant

Division of Engineering, Brown University, Providence, RI 02912

D. H. Lassila

Lawrence Livermore National Laboratory, Livermore, CA 94550

J. Eng. Mater. Technol 121(2), 172-177 (Apr 01, 1999) (6 pages) doi:10.1115/1.2812363 History: Received September 24, 1998; Revised December 06, 1998; Online November 27, 2007


This paper reports a study of the mechanical behavior of Ta-W alloys. The results show that tungsten additions increase the yield strength and the rate of work hardening of tantalum. These additions also cause a change in the deformed microstructure from one that is primarily cellular to one that consists mostly of dislocation tangles. It is proposed that the increase in yield strength arises from solid solution hardening and that the increase in the work hardening can be correlated with an increase in the density and arrangement of dislocations present in the material.

Copyright © 1999 by The American Society of Mechanical Engineers
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