Deformation of Diopside Single Crystal at Mantle Pressure 2 TEM Characterization of Deformation Microstructures
Journal Article
·
· European Journal of Mineralogy
OSTI ID:1041837
The dislocation microstructures of diopside single crystals deformed at high-pressure (4 {<=} P {<=} 9 GPa), high-temperature (1100{sup o} {<=} T {<=} 1400 {sup o}C) using a Deformation-DIA high-pressure apparatus (D-DIA) have been characterized by transmission electron microscopy using weak-beam dark-field (WBDF), precession electron diffraction (PED), large-angle convergent-beam electron diffraction (LACBED) and the thickness-fringe method. Dislocation glide is the dominant deformation mechanism under these conditions. The 1/2<110>{l_brace}110{r_brace} glide is controlled by lattice friction on the edge segments and shows extensive cross-slip. The [001] glide occurs mostly on {l_brace}110{r_brace}; no evidence for [001](010) glide has been found. The [100] dislocations bear a strong lattice friction probably due to complex (out of glide) core structures.
- Research Organization:
- BROOKHAVEN NATIONAL LABORATORY (BNL)
- Sponsoring Organization:
- USDOE SC OFFICE OF SCIENCE (SC)
- DOE Contract Number:
- AC02-98CH10886
- OSTI ID:
- 1041837
- Report Number(s):
- BNL--97515-2012-JA
- Journal Information:
- European Journal of Mineralogy, Journal Name: European Journal of Mineralogy Journal Issue: 2 Vol. 22; ISSN 0935-1221
- Country of Publication:
- United States
- Language:
- English
Similar Records
Deformation of Diopside Single Crystal at Mantle Pressure, 1, Mechanical Data
Slip systems and dislocation emission from crack tips in single crystal TiC at low temperatures
Room-temperature deformation behavior of a directionally solidified {beta} (B2)-(Ni-Fe-Al) intermetallic alloy
Journal Article
·
Wed Dec 31 23:00:00 EST 2008
· Physics of the Earth and Planetary Interiors
·
OSTI ID:1019981
Slip systems and dislocation emission from crack tips in single crystal TiC at low temperatures
Journal Article
·
Sat Jun 01 00:00:00 EDT 1996
· Acta Materialia
·
OSTI ID:271771
Room-temperature deformation behavior of a directionally solidified {beta} (B2)-(Ni-Fe-Al) intermetallic alloy
Journal Article
·
Tue Dec 31 23:00:00 EST 1996
· Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science
·
OSTI ID:438589