Asymmetric twins in rhombohedral boron carbide

Takeshi Fujita, Pengfei Guan, K. Madhav Reddy, Akihiko Hirata, Junjie Guo, Mingwei Chen

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Superhard materials consisting of light elements have recently received considerable attention because of their ultrahigh specific strength for a wide range of applications as structural and functional materials. However, the failure mechanisms of these materials subjected to high stresses and dynamic loading remain to be poorly known. We report asymmetric twins in a complex compound, boron carbide (B4C), characterized by spherical-aberration- corrected transmission electron microscopy. The atomic structure of boron-rich icosahedra at rhombohedral vertices and cross-linked carbon-rich atomic chains can be clearly visualized, which reveals unusual asymmetric twins with detectable strains along the twin interfaces. This study offers atomic insights into the structure of twins in a complex material and has important implications in understanding the planar defect-related failure of superhard materials under high stresses and shock loading.

Original languageEnglish
Article number021907
JournalApplied Physics Letters
Volume104
Issue number2
DOIs
Publication statusPublished - 2014 Jan 13
Externally publishedYes

Fingerprint

boron carbides
complex compounds
light elements
atomic structure
aberration
apexes
boron
shock
transmission electron microscopy
carbon
defects

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Fujita, T., Guan, P., Madhav Reddy, K., Hirata, A., Guo, J., & Chen, M. (2014). Asymmetric twins in rhombohedral boron carbide. Applied Physics Letters, 104(2), [021907]. https://doi.org/10.1063/1.4861182

Asymmetric twins in rhombohedral boron carbide. / Fujita, Takeshi; Guan, Pengfei; Madhav Reddy, K.; Hirata, Akihiko; Guo, Junjie; Chen, Mingwei.

In: Applied Physics Letters, Vol. 104, No. 2, 021907, 13.01.2014.

Research output: Contribution to journalArticle

Fujita, T, Guan, P, Madhav Reddy, K, Hirata, A, Guo, J & Chen, M 2014, 'Asymmetric twins in rhombohedral boron carbide', Applied Physics Letters, vol. 104, no. 2, 021907. https://doi.org/10.1063/1.4861182
Fujita T, Guan P, Madhav Reddy K, Hirata A, Guo J, Chen M. Asymmetric twins in rhombohedral boron carbide. Applied Physics Letters. 2014 Jan 13;104(2). 021907. https://doi.org/10.1063/1.4861182
Fujita, Takeshi ; Guan, Pengfei ; Madhav Reddy, K. ; Hirata, Akihiko ; Guo, Junjie ; Chen, Mingwei. / Asymmetric twins in rhombohedral boron carbide. In: Applied Physics Letters. 2014 ; Vol. 104, No. 2.
@article{6835f97d3dbb4f2a81e7d4119d6be554,
title = "Asymmetric twins in rhombohedral boron carbide",
abstract = "Superhard materials consisting of light elements have recently received considerable attention because of their ultrahigh specific strength for a wide range of applications as structural and functional materials. However, the failure mechanisms of these materials subjected to high stresses and dynamic loading remain to be poorly known. We report asymmetric twins in a complex compound, boron carbide (B4C), characterized by spherical-aberration- corrected transmission electron microscopy. The atomic structure of boron-rich icosahedra at rhombohedral vertices and cross-linked carbon-rich atomic chains can be clearly visualized, which reveals unusual asymmetric twins with detectable strains along the twin interfaces. This study offers atomic insights into the structure of twins in a complex material and has important implications in understanding the planar defect-related failure of superhard materials under high stresses and shock loading.",
author = "Takeshi Fujita and Pengfei Guan and {Madhav Reddy}, K. and Akihiko Hirata and Junjie Guo and Mingwei Chen",
year = "2014",
month = "1",
day = "13",
doi = "10.1063/1.4861182",
language = "English",
volume = "104",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics Publising LLC",
number = "2",

}

TY - JOUR

T1 - Asymmetric twins in rhombohedral boron carbide

AU - Fujita, Takeshi

AU - Guan, Pengfei

AU - Madhav Reddy, K.

AU - Hirata, Akihiko

AU - Guo, Junjie

AU - Chen, Mingwei

PY - 2014/1/13

Y1 - 2014/1/13

N2 - Superhard materials consisting of light elements have recently received considerable attention because of their ultrahigh specific strength for a wide range of applications as structural and functional materials. However, the failure mechanisms of these materials subjected to high stresses and dynamic loading remain to be poorly known. We report asymmetric twins in a complex compound, boron carbide (B4C), characterized by spherical-aberration- corrected transmission electron microscopy. The atomic structure of boron-rich icosahedra at rhombohedral vertices and cross-linked carbon-rich atomic chains can be clearly visualized, which reveals unusual asymmetric twins with detectable strains along the twin interfaces. This study offers atomic insights into the structure of twins in a complex material and has important implications in understanding the planar defect-related failure of superhard materials under high stresses and shock loading.

AB - Superhard materials consisting of light elements have recently received considerable attention because of their ultrahigh specific strength for a wide range of applications as structural and functional materials. However, the failure mechanisms of these materials subjected to high stresses and dynamic loading remain to be poorly known. We report asymmetric twins in a complex compound, boron carbide (B4C), characterized by spherical-aberration- corrected transmission electron microscopy. The atomic structure of boron-rich icosahedra at rhombohedral vertices and cross-linked carbon-rich atomic chains can be clearly visualized, which reveals unusual asymmetric twins with detectable strains along the twin interfaces. This study offers atomic insights into the structure of twins in a complex material and has important implications in understanding the planar defect-related failure of superhard materials under high stresses and shock loading.

UR - http://www.scopus.com/inward/record.url?scp=84893056185&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84893056185&partnerID=8YFLogxK

U2 - 10.1063/1.4861182

DO - 10.1063/1.4861182

M3 - Article

AN - SCOPUS:84893056185

VL - 104

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 2

M1 - 021907

ER -