The effect of hydrogen solubility on the internal friction of VTi alloys

Abstract

The purpose of this note is to present results of low frequency internal friction measurements on three hydrogenated V-Ti alloys which illustrate how the internal friction spectrum changes from one dominated by hydride precipitation to one dominated by hydrogen in solution. Demonstrates how damping due to hydrogen changes in b.c.c. alloys as the hydrogen terminal solid solubility increases. Low solubility alloys exhibit a broad damping peak at temperatures that can be associated with hydride precipitation. As the hydrogen solubility increases, peaks due to hydride precipitation and hydrogen in solid solution can co-exist in the alloy, or as in the case for the V-10 at .% Ti alloy containing 2.3 at .% H, only the low temperature hydrogen damping will occur.