Journal article
Monitoring and Characterization of the Fatigue Response of Nano- Crystalline Mg Composites Reinforced with Ti2AlC
Minerals, Metals and Materials Society/AIME, 420 Commonwealth Dr., P.O. Box 430 Warrendale PA 15086 United States. [np]. Feb 2011
01 Feb 2011
Abstract
Herein we report on the mechanical and fatigue properties of nanocrystalline Mg-matrix composites reinforced with a Ti2AlC powder, fabricated by pressureless spontaneous melt infiltration of porous Ti2AlC preforms. Careful monotonic and cyclic tensile and compression experiments, combined with continuous acoustic emission (AE) monitoring are used to obtain vital information pertinent to the initiation and evolution of deformation and damage mechanisms related to this composite. The fatigue response is shown to be excellent over an extended period of time during which the recorded and extracted AE features are noticeably different from the initial and final stages of fatigue life. These results combined with the observed high damping are consistent with, and can be explained by invoking the formation and annihilation of incipient kink bands. The latter are fully reversible dislocation-based defects consisted of parallel coaxial dislocations formed on easy slip planes of kinking non-linear elastic solids such as Ti2AlC and Mg.
Metrics
6 Record Views
Details
- Title
- Monitoring and Characterization of the Fatigue Response of Nano- Crystalline Mg Composites Reinforced with Ti2AlC
- Creators
- Antonios KontsosKavan HazeliBabak AnasoriTheodoros LoutasMichel Barsoum
- Publication Details
- Minerals, Metals and Materials Society/AIME, 420 Commonwealth Dr., P.O. Box 430 Warrendale PA 15086 United States. [np]. Feb 2011
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Mechanical Engineering and Mechanics; Materials Science and Engineering
- Identifiers
- 991019189146504721