Interaction of Glide Dislocations with Extended Precipitates in Mg-Nd alloys

The unit processes of precipitate-dislocation interaction in dilute Mg-Nd alloys are elucidated through in situ indentation experiments in TEM. Results suggest that pinned dislocations can glide along the broad facets of extended β(1) precipitates, a common strengthening phase in Mg- rare earth (RE)...

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Autores principales: Huang, Zhihua, Allison, John E., Misra, Amit
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5824803/
https://www.ncbi.nlm.nih.gov/pubmed/29476175
http://dx.doi.org/10.1038/s41598-018-20629-1
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author Huang, Zhihua
Allison, John E.
Misra, Amit
author_facet Huang, Zhihua
Allison, John E.
Misra, Amit
author_sort Huang, Zhihua
collection PubMed
description The unit processes of precipitate-dislocation interaction in dilute Mg-Nd alloys are elucidated through in situ indentation experiments in TEM. Results suggest that pinned dislocations can glide along the broad facets of extended β(1) precipitates, a common strengthening phase in Mg- rare earth (RE) alloys. A dislocation-theory based analysis suggests that the shape, spacing and orientation (with respect to the glide plane) of β(1) precipitates may favor glide of pinned dislocations along interfaces as opposed to the classical mechanism of bowing and looping around the precipitate.
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spelling pubmed-58248032018-03-01 Interaction of Glide Dislocations with Extended Precipitates in Mg-Nd alloys Huang, Zhihua Allison, John E. Misra, Amit Sci Rep Article The unit processes of precipitate-dislocation interaction in dilute Mg-Nd alloys are elucidated through in situ indentation experiments in TEM. Results suggest that pinned dislocations can glide along the broad facets of extended β(1) precipitates, a common strengthening phase in Mg- rare earth (RE) alloys. A dislocation-theory based analysis suggests that the shape, spacing and orientation (with respect to the glide plane) of β(1) precipitates may favor glide of pinned dislocations along interfaces as opposed to the classical mechanism of bowing and looping around the precipitate. Nature Publishing Group UK 2018-02-23 /pmc/articles/PMC5824803/ /pubmed/29476175 http://dx.doi.org/10.1038/s41598-018-20629-1 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Huang, Zhihua
Allison, John E.
Misra, Amit
Interaction of Glide Dislocations with Extended Precipitates in Mg-Nd alloys
title Interaction of Glide Dislocations with Extended Precipitates in Mg-Nd alloys
title_full Interaction of Glide Dislocations with Extended Precipitates in Mg-Nd alloys
title_fullStr Interaction of Glide Dislocations with Extended Precipitates in Mg-Nd alloys
title_full_unstemmed Interaction of Glide Dislocations with Extended Precipitates in Mg-Nd alloys
title_short Interaction of Glide Dislocations with Extended Precipitates in Mg-Nd alloys
title_sort interaction of glide dislocations with extended precipitates in mg-nd alloys
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5824803/
https://www.ncbi.nlm.nih.gov/pubmed/29476175
http://dx.doi.org/10.1038/s41598-018-20629-1
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