New twinning route in face-centered cubic nanocrystalline metals

Journal: Nature Communications

Published: 2017-12-15

DOI: 10.1038/s41467-017-02393-4

Affiliations: 9

Authors: 13

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Research Highlight

Shifty activity among metal atoms

© ntmw/E+/Getty

© ntmw/E+/Getty

A new type of atomic-level deformation has been observed in platinum.

When compressed, most metals deform as their atoms shift to new positions. A deformation process called twinning, in which two adjacent layers of atoms shift slightly past each other, was thought to occur only as a layer-by-layer process.

A team including researchers at the WPI Advanced Institute for Materials Research at Tohoku University has now observed a new type of twinning in platinum, a nanocrystalline metal. The two shifting layers of atoms are separated by a single atomic layer, creating a step-like, three-layer system. This deformation differs from the layer-by-layer process previously thought necessary for twinning.

Understanding how metals deform at the atomic level could help researchers make metal alloys that can be stretched and reshaped without weakening.

Supported content

  1. Nature Communications 8, 2142 (2017). doi: 10.1038/s41467-017-02393-4
Institutions Share
Beijing Key Laboratory of Microstructure and Property of Advanced Materials, BJUT, China 0.23
Tohoku University, Japan 0.15
Georgia Institute of Technology (Georgia Tech), United States of America (USA) 0.15
Rensselaer Polytechnic Institute (RPI), United States of America (USA) 0.15
Johns Hopkins University (JHU), United States of America (USA) 0.12
University of Science and Technology Beijing (USTB), China 0.08
The University of Queensland (UQ), Australia 0.04
Beijing Computational Science Research Center (CSRC), CAEP, China 0.04
Zhejiang University (ZJU), China 0.04