Non-basal slip systems in HCP metals and alloys: source mechanisms. Yoo, M. H, Agnew, S. R, Morris, J. R, & Ho, K. M Materials Science and Engineering: A, 319–321:87–92, December, 2001.
Non-basal slip systems in HCP metals and alloys: source mechanisms [link]Paper  doi  abstract   bibtex   
A possible source mechanism for non-basal 〈c+a〉 slip dislocations is proposed based on the formation of an attractive junction between glissile 〈a〉 and sessile c dislocations from the prism plane into a pyramidal plane. The driving force for the junction formation, which comes from the long-range elastic interaction between c and 〈a〉 dislocations, is relatively large in most hexagonal close-packed (hcp) metals. Beryllium, which has an unusually low Poisson's ratio, is an exception to this rule. The cross-slip process is energetically unfavorable in Mg and Ti, from a viewpoint of the change in anisotropic elastic line tension, but it becomes favorable in Ti at elevated temperatures above 300°C. Discussion is given on intrinsic stacking fault energies and kinetic aspects of the cross slip.
@article{yoo_non-basal_2001,
	title = {Non-basal slip systems in {HCP} metals and alloys: source mechanisms},
	volume = {319–321},
	issn = {0921-5093},
	shorttitle = {Non-basal slip systems in {HCP} metals and alloys},
	url = {http://www.sciencedirect.com/science/article/pii/S0921509301010279},
	doi = {10.1016/S0921-5093(01)01027-9},
	abstract = {A possible source mechanism for non-basal 〈c+a〉 slip dislocations is proposed based on the formation of an attractive junction between glissile 〈a〉 and sessile c dislocations from the prism plane into a pyramidal plane. The driving force for the junction formation, which comes from the long-range elastic interaction between c and 〈a〉 dislocations, is relatively large in most hexagonal close-packed (hcp) metals. Beryllium, which has an unusually low Poisson's ratio, is an exception to this rule. The cross-slip process is energetically unfavorable in Mg and Ti, from a viewpoint of the change in anisotropic elastic line tension, but it becomes favorable in Ti at elevated temperatures above 300°C. Discussion is given on intrinsic stacking fault energies and kinetic aspects of the cross slip.},
	urldate = {2016-02-26},
	journal = {Materials Science and Engineering: A},
	author = {Yoo, M. H and Agnew, S. R and Morris, J. R and Ho, K. M},
	month = dec,
	year = {2001},
	keywords = {Beryllium, Cross-slip process, Elastic interaction, Hexagonal close-packed metals (hcp), magnesium, Non-basal 〈c+a〉 slip dislocation, Stacking fault energies, Titanium},
	pages = {87--92},
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}

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