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	Author	Razafindrazaka, M.; Tanguy, D.; Delafosse, D.
	Title	Defect hardening modeled in 2D discrete dislocation dynamics			Type	Journal Article
	Year	2009	Publication	Materials Science and Engineering: A	Abbreviated Journal
	Volume	527	Issue	1-2	Pages	150-156
	Keywords	Dislocation theory, Hardening
	Abstract	Two-dimensional discrete dislocation dynamics simulations are used to model the plastic deformation of an fcc metallic material containing large densities of defects. An obstacle model is proposed, based on the line tension concept. Increasing yield strength and hardening are obtained when the obstacle density is increased and destroyable junctions are included. A high dislocation source density is used to obtain a good dissemination of dislocations. Over 30% of the total density is stored as junctions. Slip is shown to be localized within a few intense slip bands, whatever the obstacle density. This localization is quantified as a function of the density of obstacles.
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	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0921-5093	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	NU @ m-krug @ razafindrazaka_defect_2009			Serial	10699
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