Kink pair production and dislocation motion.
Kink pair production and dislocation motion.
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DOI:
10.1038/srep39708
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发表时间:
2016-12-22
影响因子:
4.6
通讯作者:
Fitzgerald SP
中科院分区:
文献类型:
--
作者:
Fitzgerald SP
The motion of extended defects called dislocations controls the mechanical properties of crystalline materials such as strength and ductility. Under moderate applied loads, this motion proceeds via the thermal nucleation of kink pairs. The nucleation rate is known to be a highly nonlinear function of the applied load, and its calculation has long been a theoretical challenge. In this article, a stochastic path integral approach is used to derive a simple, general, and exact formula for the rate. The predictions are in excellent agreement with experimental and computational investigations, and unambiguously explain the origin of the observed extreme nonlinearity. The results can also be applied to other systems modelled by an elastic string interacting with a periodic potential, such as Josephson junctions in superconductors.
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影响因子:
3.7
作者:
Edagawa, K;Suzuki, T;Takeuchi, S
通讯作者:
Takeuchi, S
影响因子:
8.6
作者:
Gilbert, M. R.;Schuck, P.;Marian, J.
通讯作者:
Marian, J.
影响因子:
2.9
作者:
GUYER, RA;MILLER, MD
通讯作者:
MILLER, MD
DOI:
10.1016/0001-6160(70)90113-6
发表时间:
1970-01-01
期刊:
ACTA METALLURGICA
影响因子:
--
作者:
TURNER, APL;VREELAND, T
通讯作者:
VREELAND, T
影响因子:
8.6
作者:
Fitzgerald, S. P.;Nguyen-Manh, D.
通讯作者:
Nguyen-Manh, D.