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Micromechanical model for fracture toughness prediction in Al-Zn-Mg-Cu alloy forgings
(Philosophical Magazine, 2008)
An attempt has been made to model the plane-strain fracture toughness, KIc, in Al-Zn-Mg-Cu alloy forgings subjected to overageing. The proposed model, based on the multiple micromechanisms, reveals the quantitative relations ...
Effect of beta-Si3N4 seeds on densification and fracture toughness of silicon nitride
(Ceramics International, 2006)
Composite materials based on Si3N4 were synthesized by introducing previously prepared beta-Si3N4 seeds into a mixture of alpha-Si3N4 and 10 wt% of sintering additive. The densification process during pressureless sintering ...
Fabrication of SiC by carbothermal-reduction reactions of mountain leather asbestos
(Journal of Alloys and Compounds, 2008)
Fibrous magnesium silicate (Mg6Si4O10(OH)s: Mountain leather asbestos) of Serbian origin was used as Si precursor for the Synthesis of SiC by carbothermal-reduction process. As a reducing agent, carbon (from various ...
Microstructural dependence of fracture toughness in high-strength 7000 forging alloys
(Engineering Fracture Mechanics, 2008)
The effects of microstructural parameters associated with the coarse intermetallic phases particles and precipitates on the fracture toughness of the overaged 7000 alloy forgings are investigated. Detailed microstructural ...
Microstructural characterization and computer simulation of conductivity in Si3N4-TiN composites
(Journal of Alloys and Compounds, 2004)
Si3N4-TiN ceramics sintered with Y2O3 and Y2O3 + Al2O3 as sintering aids and various content of TiN (0-50 wt.%) were investigated regarding their microstructural and electrical properties. Electroconductive composites were ...
Structural and mechanical characteristics of ZA27-7 wt.% SiC composites produced by powder metallurgy techniques
(Zeitschrift fur Metallkunde, 2004)
This paper describes a study of the structural and mechanical properties of Zn-matrix composites discontinuously reinforced by 7 wt.% SiC particles of size 0.7 mum. Commercial Zn-rich Zn-Al-Cu. (ZA27) alloy was gas atomized, ...