One-dimensional random walk of nanosized liquid Pb inclusions on dislocations in Al
Само за регистроване кориснике
2004
Аутори
Johnson, ErikLevinsen, Mogens T.
Steenstrup, Stig
Prokofjev, Sergei
Zhilin, Victor
Dahmen, Ulrich
Radetić, Tamara
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Migration of nanosized liquid Pb inclusions attached to dislocations in Al
has been observed during in-situ transmission electron microscopy heating
experiments and monitored by real-time video recordings. The movements of
the inclusions can be separated into two independent components parallel to
and perpendicular to the dislocations respectively. Movements parallel to the
dislocation lines display properties of partially confined one-dimensional random
walks where smaller inclusions can be seen to move over distances that are
many times their own sizes. In contrast, the trajectories perpendicular to the
dislocation lines are within narrowly confined spaces. Frame-by-frame analysis
of digitized video sequences recorded at different temperatures for the same
inclusion attached to a nearly horizontal dislocation illustrates the two types
of movement. The step lengths parallel to the dislocation increase rapidly
with increasing temperature while the step lengths in the transv...erse movement
only display a weak temperature dependence. A detailed statistical analysis
of the inclusion trajectories documents that both patterns of movement are
random. The activation enthalpy of the one-dimensional movement parallel
to the dislocation was found to be 2.72 0.10 eV at lower temperatures
and 1.44 0.07 eV at higher temperatures with a transition temperature around
650–660 K
Извор:
Philosophical Magazine, 2004, 84, 25-26, 2663-2673Издавач:
- Taylor & Francis
Финансирање / пројекти:
- Danish Natural Sciences Research Council
- Office of Basic Energy Sciences, Materials Science Division, US Department of Energy, under contract DE-AC3-76SF00098
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Johnson, Erik AU - Levinsen, Mogens T. AU - Steenstrup, Stig AU - Prokofjev, Sergei AU - Zhilin, Victor AU - Dahmen, Ulrich AU - Radetić, Tamara PY - 2004 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7275 AB - Migration of nanosized liquid Pb inclusions attached to dislocations in Al has been observed during in-situ transmission electron microscopy heating experiments and monitored by real-time video recordings. The movements of the inclusions can be separated into two independent components parallel to and perpendicular to the dislocations respectively. Movements parallel to the dislocation lines display properties of partially confined one-dimensional random walks where smaller inclusions can be seen to move over distances that are many times their own sizes. In contrast, the trajectories perpendicular to the dislocation lines are within narrowly confined spaces. Frame-by-frame analysis of digitized video sequences recorded at different temperatures for the same inclusion attached to a nearly horizontal dislocation illustrates the two types of movement. The step lengths parallel to the dislocation increase rapidly with increasing temperature while the step lengths in the transverse movement only display a weak temperature dependence. A detailed statistical analysis of the inclusion trajectories documents that both patterns of movement are random. The activation enthalpy of the one-dimensional movement parallel to the dislocation was found to be 2.72 0.10 eV at lower temperatures and 1.44 0.07 eV at higher temperatures with a transition temperature around 650–660 K PB - Taylor & Francis T2 - Philosophical Magazine T1 - One-dimensional random walk of nanosized liquid Pb inclusions on dislocations in Al EP - 2673 IS - 25-26 SP - 2663 VL - 84 DO - 10.1080/14786430410001671412 ER -
@article{ author = "Johnson, Erik and Levinsen, Mogens T. and Steenstrup, Stig and Prokofjev, Sergei and Zhilin, Victor and Dahmen, Ulrich and Radetić, Tamara", year = "2004", abstract = "Migration of nanosized liquid Pb inclusions attached to dislocations in Al has been observed during in-situ transmission electron microscopy heating experiments and monitored by real-time video recordings. The movements of the inclusions can be separated into two independent components parallel to and perpendicular to the dislocations respectively. Movements parallel to the dislocation lines display properties of partially confined one-dimensional random walks where smaller inclusions can be seen to move over distances that are many times their own sizes. In contrast, the trajectories perpendicular to the dislocation lines are within narrowly confined spaces. Frame-by-frame analysis of digitized video sequences recorded at different temperatures for the same inclusion attached to a nearly horizontal dislocation illustrates the two types of movement. The step lengths parallel to the dislocation increase rapidly with increasing temperature while the step lengths in the transverse movement only display a weak temperature dependence. A detailed statistical analysis of the inclusion trajectories documents that both patterns of movement are random. The activation enthalpy of the one-dimensional movement parallel to the dislocation was found to be 2.72 0.10 eV at lower temperatures and 1.44 0.07 eV at higher temperatures with a transition temperature around 650–660 K", publisher = "Taylor & Francis", journal = "Philosophical Magazine", title = "One-dimensional random walk of nanosized liquid Pb inclusions on dislocations in Al", pages = "2673-2663", number = "25-26", volume = "84", doi = "10.1080/14786430410001671412" }
Johnson, E., Levinsen, M. T., Steenstrup, S., Prokofjev, S., Zhilin, V., Dahmen, U.,& Radetić, T.. (2004). One-dimensional random walk of nanosized liquid Pb inclusions on dislocations in Al. in Philosophical Magazine Taylor & Francis., 84(25-26), 2663-2673. https://doi.org/10.1080/14786430410001671412
Johnson E, Levinsen MT, Steenstrup S, Prokofjev S, Zhilin V, Dahmen U, Radetić T. One-dimensional random walk of nanosized liquid Pb inclusions on dislocations in Al. in Philosophical Magazine. 2004;84(25-26):2663-2673. doi:10.1080/14786430410001671412 .
Johnson, Erik, Levinsen, Mogens T., Steenstrup, Stig, Prokofjev, Sergei, Zhilin, Victor, Dahmen, Ulrich, Radetić, Tamara, "One-dimensional random walk of nanosized liquid Pb inclusions on dislocations in Al" in Philosophical Magazine, 84, no. 25-26 (2004):2663-2673, https://doi.org/10.1080/14786430410001671412 . .