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From “Smaller is Stronger” to “Size‐Independent Strength Plateau”: Towards Measuring the Ideal Strength of Iron
Author(s) -
Han WeiZhong,
Huang Ling,
Ogata Shigenobu,
Kimizuka Hajime,
Yang ZhaoChun,
Weinberger Christopher,
Li QingJie,
Liu BoYu,
Zhang XiXiang,
Li Ju,
Ma Evan,
Shan ZhiWei
Publication year - 2015
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201500377
Subject(s) - materials science , ideal (ethics) , plateau (mathematics) , composite material , mathematics , mathematical analysis , philosophy , epistemology
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.