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

Huang, Zhihua; Allison, John E.; Misra, Amit

doi:10.1038/s41598-018-20629-1

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

Journal Article · Fri Feb 23 00:00:00 EST 2018 · Scientific Reports

DOI:https://doi.org/10.1038/s41598-018-20629-1· OSTI ID:1500039

Huang, Zhihua ^[1]; Allison, John E. ^[1]; Misra, Amit ^[1]

Univ. of Michigan, Ann Arbor, MI (United States)

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 β1 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 β1 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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Research Organization:: Univ. of Michigan, Ann Arbor, MI (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: SC0008637

OSTI ID:: 1500039

Journal Information:: Scientific Reports, Vol. 8, Issue 1; ISSN 2045-2322

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 12 works

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Cited By (3)

Basal dislocation/precipitate interactions in Mg–Al alloys: an atomistic investigation Esteban-Manzanares, Gustavo; Ma, Anxin; Papadimitriou, Ioannis Modelling and Simulation in Materials Science and Engineering, Vol. 27, Issue 7 https://doi.org/10.1088/1361-651x/ab2de0	journal	July 2019
PRISMS: An Integrated, Open-Source Framework for Accelerating Predictive Structural Materials Science Aagesen, L. K.; Adams, J. F.; Allison, J. E. JOM, Vol. 70, Issue 10 https://doi.org/10.1007/s11837-018-3079-6	journal	August 2018
Basal dislocation/precipitate interactions in Mg-Al alloys: an atomistic investigation Esteban-Manzanares, Gustavo; Ma, Anxin; Papadimitriou, Ioannis arXiv https://doi.org/10.48550/arxiv.1909.09760	text	January 2019

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