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Deformation patterns and fracture stress of beta-phase gallium oxide single crystal obtained using compression of micro-pillars
- Source :
- Journal of Materials Science. 54:1958-1966
- Publication Year :
- 2018
- Publisher :
- Springer Science and Business Media LLC, 2018.
-
Abstract
- The deformation of single-crystal beta-phase gallium oxide (or β-Ga2O3) micro-pillars under compression was investigated with the aid of transmission electron microscopy. High-density stacking faults were the dominant deformation defects in the plastically deformed micro-pillars. Micro-cracks were found along (200), (001) and (010) lattice planes and fracture occurred along (200) lattice plane when compressive strain was sufficiently great. Lattice bending was also observed in the fractured pillar. The average fracture stress and strain of β-Ga2O3 being measured are 7.25 ± 1.11 GPa and 3.80 ± 0.57%, respectively, which have never been reported previously.
- Subjects :
- 010302 applied physics
Materials science
Mechanical Engineering
Stress–strain curve
02 engineering and technology
Crystal structure
021001 nanoscience & nanotechnology
01 natural sciences
Crystallographic defect
Mechanics of Materials
Transmission electron microscopy
0103 physical sciences
Solid mechanics
Lattice plane
Microscopy
General Materials Science
Composite material
0210 nano-technology
Single crystal
Subjects
Details
- ISSN :
- 15734803 and 00222461
- Volume :
- 54
- Database :
- OpenAIRE
- Journal :
- Journal of Materials Science
- Accession number :
- edsair.doi...........890971366df80deeeb58b1f1d04d29fa