Abstract
Zr–1Nb alloy uniaxially compressed at room temperature at 10 −2 and 10 3 s −1 exhibited twinning and a three-stage strain-hardening behavior. At 10 3 s −1 the twin fraction initially increased to 0.3, decreasing to 0.02 at higher strains. Despite the difference in texture at intermediate strains, the final texture was similar at both strain rates . The increasing strain-hardening rate in the second stage was attributed to strengthening from grain boundaries and dislocations, and softening from reorientation due to twinning.
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