Hydrogenated vacancies lock dislocations in aluminium

Degang Xie; Suzhi Li; Meng Li; Zhangjie Wang; Peter Gumbsch; Jun Sun; Evan Ma; Ju Li; Zhiwei Shan

doi:10.1038/ncomms13341

Nature Communications (Nov 2016)

Hydrogenated vacancies lock dislocations in aluminium

Degang Xie,
Suzhi Li,
Meng Li,
Zhangjie Wang,
Peter Gumbsch,
Jun Sun,
Evan Ma,
Ju Li,
Zhiwei Shan

Affiliations

Degang Xie: Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano) & Hysitron Applied Research Center in China (HARCC), State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University
Suzhi Li: Institute for Applied Materials, Karlsruhe Institute of Technology
Meng Li: Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano) & Hysitron Applied Research Center in China (HARCC), State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University
Zhangjie Wang: Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano) & Hysitron Applied Research Center in China (HARCC), State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University
Peter Gumbsch: Institute for Applied Materials, Karlsruhe Institute of Technology
Jun Sun: Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano) & Hysitron Applied Research Center in China (HARCC), State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University
Evan Ma: Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano) & Hysitron Applied Research Center in China (HARCC), State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University
Ju Li: Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano) & Hysitron Applied Research Center in China (HARCC), State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University
Zhiwei Shan: Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano) & Hysitron Applied Research Center in China (HARCC), State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University

DOI: https://doi.org/10.1038/ncomms13341
Journal volume & issue: Vol. 7, no. 1
pp. 1 – 7

Abstract

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Due to its high diffusivity, hydrogen is considered a weak inhibitor or even a promoter of dislocation movements in metals and alloys. Here the authors quantitatively demonstrate that after exposing aluminium to hydrogen, mobile dislocations can lose mobility, due to segregation of hydrogenated vacancies to dislocations.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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