Print Email Facebook Twitter Unravelling dislocation networks in metals Title Unravelling dislocation networks in metals Author Arechabaleta Guenechea, Z. (TU Delft (OLD) MSE-1) van Liempt, P. (TU Delft (OLD) MSE-3) Sietsma, J. (TU Delft (OLD) MSE-3) Date 2018 Abstract Understanding the intricate structure of dislocations in metals is a major issue in materials science. In this paper we present a comprehensive approach for the characterisation of dislocation networks, resulting in accurate quantification and significantly increasing the insight into the dislocation structure. Dislocation networks in metals consists of dislocation segments, pinned by microstructural obstacles. In the present paper a model is introduced that describes the behaviour of these dislocation segments in the pre-yield range of a tensile test on the basis of fundamental concepts of dislocation theory. The model enables experimental quantification of the dislocation density and segment length from the tensile curve. Quantitative results are shown and discussed on the development of the dislocation network as a function of increasing degree of plastic deformation, including validation and physical interpretation of the classical Taylor equation. Subject Anelastic strainDislocation networkTaylor equationYield stress To reference this document use: http://resolver.tudelft.nl/uuid:98704385-1ad9-469d-a512-643a16a51200 DOI https://doi.org/10.1016/j.msea.2017.10.099 ISSN 0921-5093 Source Materials Science and Engineering A: Structural Materials: Properties, Microstructures and Processing, 710, 329-333 Part of collection Institutional Repository Document type journal article Rights © 2018 Z. Arechabaleta Guenechea, P. van Liempt, J. Sietsma Files PDF 1_s2.0_S0921509317314260_main.pdf 502.82 KB Close viewer /islandora/object/uuid:98704385-1ad9-469d-a512-643a16a51200/datastream/OBJ/view