From "Smaller is Stronger" to "Size-Independent Strength Plateau": Towards Measuring the Ideal Strength of Iron

From "Smaller is Stronger" to "Size-Independent Strength Plateau": Towards Measuring the Ideal Strength of Iron

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 o...

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Veröffentlicht in:Advanced materials (Weinheim) 2015-06, Vol.27 (22), p.3385-3390
Hauptverfasser: Han, Wei-Zhong, Huang, Ling, Ogata, Shigenobu, Kimizuka, Hajime, Yang, Zhao-Chun, Weinberger, Christopher, Li, Qing-Jie, Liu, Bo-Yu, Zhang, Xi-Xiang, Li, Ju, Ma, Evan, Shan, Zhi-Wei
Format: Artikel
Sprache:eng
Schlagworte:
Contact pressure
ideal strength
Iron
Iron - chemistry
Iron and steel industry
iron nanoparticles
Materials Testing
Mechanical Phenomena
Metal Nanoparticles - chemistry
Nanoparticles
Nanospheres
Particle Size
Pressure
Shear stress
size effects
Strength
strength plateau
Trends
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Zusammenfassung: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.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201500377