Constitutive Law and Flow Mechanism in Diamond Deformation
Abstract
Constitutive laws and crystal plasticity in diamond deformation have been the subjects of substantial interest since synthetic diamond was made in 1950's. To date, however, little is known quantitatively regarding its brittle-ductile properties and yield strength at high temperatures. In this paper, we report, for the first time, the strain-stress constitutive relations and experimental demonstration of deformation mechanisms under confined high pressure. The deformation at room temperature is essentially brittle, cataclastic, and mostly accommodated by fracturing on {111} plane with no plastic yielding at uniaxial strains up to 15%. At elevated temperatures of 1000°C and 1200°C diamond crystals exhibit significant ductile flow with corresponding yield strength of 7.9 and 6.3 GPa, indicating that diamond starts to weaken when temperature is over 1000°C. Finally, at high temperature the plastic deformation and ductile flow is meditated by the <110>{111} dislocation glide and a very active {111} micro-twinning.
- Authors:
-
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States). LANSCE Lujan Center
- Univ. Lille 1, Villeneuve d'Ascq (France). Materials and Transformations Unit
- Univ. of Nevada, Las Vegas, NV (United States). Dept. of Physics and Astronomy. High Pressure Science and Engineering Center (HiPSEC)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States). LANSCE Lujan Center; Univ. of Nevada, Las Vegas, NV (United States). Dept. of Physics and Astronomy. High Pressure Science and Engineering Center (HiPSEC)
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE); USDOE National Nuclear Security Administration (NNSA); National Science Foundation (NSF); Conseil Regional du Nord-Pas de Calais (France); European Regional Development Fund (ERDF); Inst. National des Sciences de l'Univers (INSU, CNRS) (France)
- Contributing Org.:
- Univ. of Nevada, Las Vegas, NV (United States); Univ. Lille 1, Villeneuve d'Ascq (France)
- OSTI Identifier:
- 1321726
- Report Number(s):
- LA-UR-13-21226
Journal ID: ISSN 2045-2322
- Grant/Contract Number:
- AC52-06NA25396; FC52-06NA27684; EAR 01-35554
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Scientific Reports
- Additional Journal Information:
- Journal Volume: 2; Journal ID: ISSN 2045-2322
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; applied physics; materials science; mechanical engineering; mineralogy
Citation Formats
Yu, Xiaohui, Raterron, Paul, Zhang, Jianzhong, Lin, Zhijun, Wang, Liping, and Zhao, Yusheng. Constitutive Law and Flow Mechanism in Diamond Deformation. United States: N. p., 2012.
Web. doi:10.1038/srep00876.
Yu, Xiaohui, Raterron, Paul, Zhang, Jianzhong, Lin, Zhijun, Wang, Liping, & Zhao, Yusheng. Constitutive Law and Flow Mechanism in Diamond Deformation. United States. https://doi.org/10.1038/srep00876
Yu, Xiaohui, Raterron, Paul, Zhang, Jianzhong, Lin, Zhijun, Wang, Liping, and Zhao, Yusheng. Mon .
"Constitutive Law and Flow Mechanism in Diamond Deformation". United States. https://doi.org/10.1038/srep00876. https://www.osti.gov/servlets/purl/1321726.
@article{osti_1321726,
title = {Constitutive Law and Flow Mechanism in Diamond Deformation},
author = {Yu, Xiaohui and Raterron, Paul and Zhang, Jianzhong and Lin, Zhijun and Wang, Liping and Zhao, Yusheng},
abstractNote = {Constitutive laws and crystal plasticity in diamond deformation have been the subjects of substantial interest since synthetic diamond was made in 1950's. To date, however, little is known quantitatively regarding its brittle-ductile properties and yield strength at high temperatures. In this paper, we report, for the first time, the strain-stress constitutive relations and experimental demonstration of deformation mechanisms under confined high pressure. The deformation at room temperature is essentially brittle, cataclastic, and mostly accommodated by fracturing on {111} plane with no plastic yielding at uniaxial strains up to 15%. At elevated temperatures of 1000°C and 1200°C diamond crystals exhibit significant ductile flow with corresponding yield strength of 7.9 and 6.3 GPa, indicating that diamond starts to weaken when temperature is over 1000°C. Finally, at high temperature the plastic deformation and ductile flow is meditated by the <110>{111} dislocation glide and a very active {111} micro-twinning.},
doi = {10.1038/srep00876},
journal = {Scientific Reports},
number = ,
volume = 2,
place = {United States},
year = {Mon Nov 19 00:00:00 EST 2012},
month = {Mon Nov 19 00:00:00 EST 2012}
}
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Works referencing / citing this record:
Fragmentation and stress diversification in diamond powder under high pressure
journal, December 2018
- Guan, Shixue; Peng, Fang; Liang, Hao
- Journal of Applied Physics, Vol. 124, Issue 21
Non-Destructive In Situ Study of Plastic Deformations in Diamonds: X-ray Diffraction Topography and µFTIR Mapping of Two Super Deep Diamond Crystals from São Luiz (Juina, Brazil)
journal, July 2017
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