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From "smaller is stronger" to "size-independent strength plateau": Towards measuring the ideal strength of iron

Wei-Zhong Han, Ling Huang, Shigenobu Ogata, Hajime Kimizuka, Zhao-Chun Yang, Christopher Weinberger, Qing-Jie Li, Bo-Yu Liu, Xi-Xiang Zhang, Ju Li, Evan Ma, Zhi-Wei Shan

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

The trend from "smaller is stronger" to "size-independent strength plateau" is observed in the compression of spherical iron nanoparticles. When the diameter of iron nanospheres is less than a critical value, the maximum contact pressure saturates at 10.7 GPa, corresponding to a local shear stress of ≈9.4 GPa, which is comparable to the theoretical shear strength of iron. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Original languageEnglish
Pages (from-to)3385-3390
JournalAdvanced Materials
Volume27
Issue number22
DOIs
Publication statusPublished - 1 Jun 2015
Externally publishedYes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to <a href="mailto:[email protected]">[email protected]</a>.

Funding

This work was supported by the grants from NSFC (Grant Nos. 51231005, 51471128, 11132006, and 51321003) and 973 Program of China (2012CB619402). The authors appreciate the support from the 111 Project of China (B06025). W.-Z.H. was supported by the new faculty start-up funding from XJTU. Both E.M. and J.L. carried out this work under an adjunct professorship at XJTU. J.L. acknowledges support by NSF DMR-1120901 and DMR-1240933. S.O. and H.K. acknowledge support by ESISM and JSPS KAKENHI (Grant Nos. 22102003, 23246025, 23109004, 24686072, and 25630013).

Research Keywords

  • ideal strength
  • iron nanoparticles
  • size effects
  • strength plateau

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