| Autor: |
Liu, Yong, Li, Yulong, Xie, Zeliang, Ramesh, K.T. |
| Předmět: |
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| Zdroj: |
Philosophical Magazine Letters; Sep2002, Vol. 82 Issue 9, p511-517, 7p |
| Abstrakt: |
Deformation of NiTi shape-memory alloys (SMAs) under dynamic tension has been studied. It is found that the stress plateau associated with detwinning still exists at the highest strain rate tested (300s[sup -1]). Beyond the stress plateau, when dislocation mechanisms dominate the deformation process, the strain-hardening effect is more strongly dependent on strain rate. The dynamically deformed specimens exhibit a shape-recovery process and a two-way memory effect which are identical with that for the alloy deformed under quasistatic conditions. The observations suggest that the detwinning process takes place in SMAs under dynamic tension. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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