%0 Journal Article %1 Kosugi1993316 %A Kosugi, T %A Kino, T %D 1993 %J Materials Science and Engineering: A %K binding-energy damping %N 1-2 %P 316 - 321 %R 10.1016/0921-5093(93)90685-8 %T Ultrasonic study of the interaction potential between a dislocation and a single solute atom %U http://www.sciencedirect.com/science/article/B6TXD-48N825W-GK/2/a96e1edb99703754c021f0ccf1467056 %V 164 %X The interaction potential between a dislocation and a single solute atom was investigated using the amplitude-dependent internal friction (ADIF) at 1.6-30 K in pure Al crystals, into which were introduced a single kind of solute atom, i.e. 100 ppm Zn, 50 ppm Ag, 25 ppm Mg and 20 ppm Cu respectively. The following common features were found for all crystals for the temperature dependence of the applied stress amplitude sigma0 under constant ADIF. (1) At lower temperatures, sigma0 changes linearly with . The law holds at , where sigma0 (T=0) is the extrapolated value of the dependence. (2) A simple potential, where the Cottrell type potential based on the linear elastic theory is modified to become flat near the dislocation center, can explain the temperature dependence of sigma0 satisfactorily except at (T=0)greater than, approximately0.87. These results mean that the shape of the interaction potential is the same for all the solutes and the real interaction potential becomes shallower near the dislocation center than is expected from the solution derived using the linear elastic theory. The interaction energies of a dislocation and a single solute atom were determined as 0.11, 0.135, 0.19 and 0.195 eV for Zn, Ag, Mg and Cu respectively.

@article{Kosugi1993316, abstract = {The interaction potential between a dislocation and a single solute atom was investigated using the amplitude-dependent internal friction (ADIF) at 1.6-30 K in pure Al crystals, into which were introduced a single kind of solute atom, i.e. 100 ppm Zn, 50 ppm Ag, 25 ppm Mg and 20 ppm Cu respectively. The following common features were found for all crystals for the temperature dependence of the applied stress amplitude [sigma]0 under constant ADIF. (1) At lower temperatures, [sigma]0 changes linearly with . The law holds at , where [sigma]0 (T=0) is the extrapolated value of the dependence. (2) A simple potential, where the Cottrell type potential based on the linear elastic theory is modified to become flat near the dislocation center, can explain the temperature dependence of [sigma]0 satisfactorily except at (T=0)[greater than, approximately]0.87. These results mean that the shape of the interaction potential is the same for all the solutes and the real interaction potential becomes shallower near the dislocation center than is expected from the solution derived using the linear elastic theory. The interaction energies of a dislocation and a single solute atom were determined as 0.11, 0.135, 0.19 and 0.195 eV for Zn, Ag, Mg and Cu respectively.}, added-at = {2010-11-19T15:13:37.000+0100}, author = {Kosugi, T and Kino, T}, biburl = {https://www.bibsonomy.org/bibtex/25e7e254d7bdfe986740b5d3a901169d3/riche.ma}, description = {ScienceDirect - Materials Science and Engineering: A : Ultrasonic study of the interaction potential between a dislocation and a single solute atom}, doi = {10.1016/0921-5093(93)90685-8}, interhash = {946e4f237f9ef254ae788fa8ff5b8f5b}, intrahash = {5e7e254d7bdfe986740b5d3a901169d3}, issn = {0921-5093}, journal = {Materials Science and Engineering: A}, keywords = {binding-energy damping}, note = {European Research Conference on Plasticity of Materials-Fundamental Aspects of Dislocation Interactions: Low-energy Dislocation Structures III}, number = {1-2}, pages = {316 - 321}, timestamp = {2010-11-19T15:13:37.000+0100}, title = {Ultrasonic study of the interaction potential between a dislocation and a single solute atom}, url = {http://www.sciencedirect.com/science/article/B6TXD-48N825W-GK/2/a96e1edb99703754c021f0ccf1467056}, volume = 164, year = 1993 }