IDEAS home Printed from https://ideas.repec.org/a/nat/nature/v464y2010i7290d10.1038_nature08929.html
   My bibliography  Save this article

Dislocation nucleation governed softening and maximum strength in nano-twinned metals

Author

Listed:
  • Xiaoyan Li

    (Brown University, Providence, Rhode Island 02912, USA)

  • Yujie Wei

    (University of Alabama, Tuscaloosa, Alabama 35487, USA
    Present address: State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China.)

  • Lei Lu

    (Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences)

  • Ke Lu

    (Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences)

  • Huajian Gao

    (Brown University, Providence, Rhode Island 02912, USA)

Abstract

A new source of softening Conventional metals gain much of their strength through the interaction of dislocations with obstacles such as grain boundaries, whereas the geometrical constraints prevailing in nanostructured materials limit such effects. Huajian Gao and colleagues now report molecular dynamics simulations which reveal that the strength of ultrafine grained copper containing twin boundaries can be controlled by a dislocation nucleation mechanism activated below a critical twin thickness. The motion of the new dislocations leads to the migration of twin planes, and as a result the material becomes softer. The smaller the grains, the smaller the twin-boundary spacing and the higher the maximum strength of the material.

Suggested Citation

  • Xiaoyan Li & Yujie Wei & Lei Lu & Ke Lu & Huajian Gao, 2010. "Dislocation nucleation governed softening and maximum strength in nano-twinned metals," Nature, Nature, vol. 464(7290), pages 877-880, April.
    • Handle: RePEc:nat:nature:v:464:y:2010:i:7290:d:10.1038_nature08929
    DOI: 10.1038/nature08929
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/nature08929
    File Function: Abstract
    Download Restriction: Access to the full text of the articles in this series is restricted.
    File URL: https://libkey.io/10.1038/nature08929?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Haiyue Xu & Wei Ji & Jiawei Jiang & Junliang Liu & Hao Wang & Fan Zhang & Ruohan Yu & Bingtian Tu & Jinyong Zhang & Ji Zou & Weimin Wang & Jinsong Wu & Zhengyi Fu, 2023. "Contribution of boundary non-stoichiometry to the lower-temperature plasticity in high-pressure sintered boron carbide," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    2. Qingyuan Li & De Ning & Deniz Wong & Ke An & Yuxin Tang & Dong Zhou & Götz Schuck & Zhenhua Chen & Nian Zhang & Xiangfeng Liu, 2022. "Improving the oxygen redox reversibility of Li-rich battery cathode materials via Coulombic repulsive interactions strategy," Nature Communications, Nature, vol. 13(1), pages 1-13, December.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:nature:v:464:y:2010:i:7290:d:10.1038_nature08929. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.