Abstract
Abstract : It has been shown that strengthening of tungsten-heavy alloys is possible through the use of cold working and heat treatment. The source of the increased strength has been attributed to strain aging due to the presence of carbon. Further, it was shown that this increase in strength did not have to be at the expense of elongation. For a 90% tungsten-heavy alloy, the strength increased from 164.7 ksi in the as-swaged condition to 178.4 ksi when heat treated at 700C for 1 hour. Under the same conditions the elongation increased from 10.8% to 12 .2%. Similar results were observed for a 93% tungsten-heavy alloy. The strength increased from 173.9 ksi as-swaged, to 197.0.o ksi when heat treated for 1 hour at 600 C. The elongation fully recovered at 800 C, held for 1 hour. Keywords: Heat treatment; Strain mechanics.
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