Abstract
The strain rate sensitivity (m) of Ti-xAl-yMo-zV and Ti-xAl-yMo-zCr bcc-Ti alloys has been investigated as a function of composition by a high throughput approach based on diffusion multiples and mechanical property screening by micropillar compression. It is shown that the influence of a solute species depends on the alloy composition. In particular, increasing levels of Mo result in a decrease of m in Ti-xAl-yMo-zV alloys, while they do not have a significant effect in the Ti-xAl-yMo-zCr system. The measured m values are related to the active deformation systems and to the flow stress and activation volume of the investigated alloys.
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