Anomalous detwinning in constrained Cu nanoparticles
Source abstract
Abstract
In this work, the detwinning process in a 9 nm graphene-constrained Cu nanoparticle was investigated at 1009 °C via in situ high-resolution transmission electron microscopy. Instead of the expected reverse glide of the twinning dislocations, two new twins were formed; the four twin zones rotated synergistically before vanishing. Furthermore, the twin boundary migration energy and the system energy were increased continuously with detwinning. The increased resistance to twin boundary migration in constrained nanoparticles enriches our understanding of the twinning mechanism and may facilitate the design of high-strength and high-ductility nanomaterials.
Source: openalex_inverted_index · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: nanoparticles nucleation surface interactions · Microstructure and mechanical properties · Nanoporous metals and alloys
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Center for Electron Microscopy and Tianjin Key Laboratory of Advanced Functional Porous Materials
Institute for New Energy Materials & Low-Carbon Technologies
School of Materials Science and Engineering
Tianjin University of Technology
Tianjin 300384
Funding
National Natural Science Foundation of China · National Basic Research Program of China · Tianjin Science and Technology Committee · National Science Fund for Distinguished Young Scholars
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