Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 875, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2023.145070
Keywords
Titanium; Dislocations; Interstitial elements; Ab initio
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The interaction between interstitial elements and screw dislocations in hexagonal titanium has been determined using ab initio calculations. O, N, and C act as repulsive obstacles, while H is attracted to the dislocation, especially to the pyramidal stacking faults forming the dislocation core. Thus, the studied solutes provoke different strengthening mechanisms, such as dislocation cross-slip or binding.
Interaction of interstitial elements and screw dislocations in hexagonal titanium is determined with ab initio calculations. O, N and C are repulsive obstacles while H exhibits attraction to dislocation, especially to pyramidal stacking faults forming the dislocation core. Studied solutes thus provoke different strengthening mechanism, i.e. dislocation cross slip or binding.
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