Microstructure and mechanical properties of Ti2AlC-reinforced TiAl composites
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Taotao Ai
, Fang Liu , Qi Yu , Xiaoming Feng , Yingtang Zhang und Wenhu Li
Abstract
Ti2AlC/TiAl composites were successfully in-situ synthesized by reaction hot pressing using Ti, Al, TiC and CNTs as starting materials. The results indicate that the as-sintered composites mainly consist of Ti2AlC and TiAl phases. The mechanical properties of the 23 wt.% Ti2AlC/TiAl composite exhibit the highest values, with a flexural strength and fracture toughness of 652.5 ± 76.8 MPa and 6.6 ± 0.5 MPa m1/2, respectively. The complex structure coupled with dispersed Ti2AlC micro-particulates is responsible for the enhancement in the strength. Toughening of the composite is mainly attributed to crack deflection, crack bridging, crack branching and pull-out of the Ti2AlC particles, as well as transgranular cracking.
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© 2014, Carl Hanser Verlag, München
Artikel in diesem Heft
- Contents
- Contents
- Original Contributions
- Thermodynamic description of the Ta–W–Zr system
- Interrelationships of defects, nitride modification and excess nitrogen in nitrided Fe-4.75 at.% Al alloy
- Effects of rotating magnetic and ultrasonic fields on the microstructure and mechanical properties of Al-8 wt.%Si alloy
- Microstructural control of Ti-46Al-7Nb-0.7Cr-0.2Ni-0.1Si alloy by heat treatment
- Structure and mechanical properties of Zn-(5–25) Al alloys
- Hot ductility behavior of near-alpha titanium alloy IMI834
- The effect of nano-SiO2 on magnetic and dielectric properties of Li–Zn ferrite
- Production of aluminum nano-composite reinforced by tungsten carbide particles via mechanical milling and subsequent hot pressing
- Short Communications
- Microstructure and texture evolution of Mg–Li alloy during rolling
- Microstructure and mechanical properties of Ti2AlC-reinforced TiAl composites
- Thermal fatigue behavior of cast superalloy Inconel 713LC
- Study of structural, morphological and optical properties of S and Cu co-doped SnO2 nanostructured thin films prepared by spray pyrolysis
- Synthesis and characterization of zirconium nitride coatings by cathodic arc sputtering technique
- Plasmon enhanced scattering and fluorescence in amorphous matrix
- Novel preparation of a porous composite insulating scaffold from forsterite and sodium carbonate media
- People
- Werner Mader, 65 years
- DGM News
- DGM News
Artikel in diesem Heft
- Contents
- Contents
- Original Contributions
- Thermodynamic description of the Ta–W–Zr system
- Interrelationships of defects, nitride modification and excess nitrogen in nitrided Fe-4.75 at.% Al alloy
- Effects of rotating magnetic and ultrasonic fields on the microstructure and mechanical properties of Al-8 wt.%Si alloy
- Microstructural control of Ti-46Al-7Nb-0.7Cr-0.2Ni-0.1Si alloy by heat treatment
- Structure and mechanical properties of Zn-(5–25) Al alloys
- Hot ductility behavior of near-alpha titanium alloy IMI834
- The effect of nano-SiO2 on magnetic and dielectric properties of Li–Zn ferrite
- Production of aluminum nano-composite reinforced by tungsten carbide particles via mechanical milling and subsequent hot pressing
- Short Communications
- Microstructure and texture evolution of Mg–Li alloy during rolling
- Microstructure and mechanical properties of Ti2AlC-reinforced TiAl composites
- Thermal fatigue behavior of cast superalloy Inconel 713LC
- Study of structural, morphological and optical properties of S and Cu co-doped SnO2 nanostructured thin films prepared by spray pyrolysis
- Synthesis and characterization of zirconium nitride coatings by cathodic arc sputtering technique
- Plasmon enhanced scattering and fluorescence in amorphous matrix
- Novel preparation of a porous composite insulating scaffold from forsterite and sodium carbonate media
- People
- Werner Mader, 65 years
- DGM News
- DGM News