Journal of Applied Physics, volume 126, issue 12, pages 125109

A model of hardness and fracture toughness of solids

Publication typeJournal Article
Publication date2019-09-25
Quartile SCImago
Q2
Quartile WOS
Q2
Impact factor3.2
ISSN00218979, 10897550
General Physics and Astronomy
Abstract
Hardness and fracture toughness are some of the most important mechanical properties. Here, we propose a simple model that uses only the elastic properties to calculate the hardness and fracture toughness. Its accuracy is checked by comparison with other available models and experimental data for metals, covalent and ionic crystals, and bulk metallic glasses. We found the model to perform well on all datasets for both hardness and fracture toughness, while for auxetic materials (i.e., those having a negative Poisson’s ratio), it turned out to be the only model that gives reasonable hardness. Predictions are made for several materials for which no experimental data exist.Hardness and fracture toughness are some of the most important mechanical properties. Here, we propose a simple model that uses only the elastic properties to calculate the hardness and fracture toughness. Its accuracy is checked by comparison with other available models and experimental data for metals, covalent and ionic crystals, and bulk metallic glasses. We found the model to perform well on all datasets for both hardness and fracture toughness, while for auxetic materials (i.e., those having a negative Poisson’s ratio), it turned out to be the only model that gives reasonable hardness. Predictions are made for several materials for which no experimental data exist.

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Mazhnik E. et al. A model of hardness and fracture toughness of solids // Journal of Applied Physics. 2019. Vol. 126. No. 12. p. 125109.
GOST all authors (up to 50) Copy
Mazhnik E., Oganov A. R. A model of hardness and fracture toughness of solids // Journal of Applied Physics. 2019. Vol. 126. No. 12. p. 125109.
RIS |
Cite this
RIS Copy
TY - JOUR
DO - 10.1063/1.5113622
UR - https://doi.org/10.1063%2F1.5113622
TI - A model of hardness and fracture toughness of solids
T2 - Journal of Applied Physics
AU - Mazhnik, Efim
AU - Oganov, A. R.
PY - 2019
DA - 2019/09/25 00:00:00
PB - American Institute of Physics (AIP)
SP - 125109
IS - 12
VL - 126
SN - 0021-8979
SN - 1089-7550
ER -
BibTex |
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BibTex Copy
@article{2019_Mazhnik
author = {Efim Mazhnik and A. R. Oganov},
title = {A model of hardness and fracture toughness of solids},
journal = {Journal of Applied Physics},
year = {2019},
volume = {126},
publisher = {American Institute of Physics (AIP)},
month = {sep},
url = {https://doi.org/10.1063%2F1.5113622},
number = {12},
pages = {125109},
doi = {10.1063/1.5113622}
}
MLA
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MLA Copy
Mazhnik, Efim, et al. “A model of hardness and fracture toughness of solids.” Journal of Applied Physics, vol. 126, no. 12, Sep. 2019, p. 125109. https://doi.org/10.1063%2F1.5113622.
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