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National Repository of Grey Literature 13 records found  previous11 - 13  jump to record: Search took 0.00 seconds. 
Preparation of quasicrystals Al-Cu-Fe by mechanical alloying and SPS
 Novák, P. ; Kubatík, Tomáš František ; Hendrych, R. ; Voděrová, M. ; Vojtěch, D.
This work deals with the preparation of fine-grained material based on quasicrystalline phase of Al-Fe-Cu powder metallurgy using mechanical alloying and compaction method "Spark Plasma Sintering". Described the dependence of the microstructure and phase composition of powders depending on the conditions of the mechanical alloying. It was studied the stability of the quasicrystalline phase at various temperatures and times of compacting
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Microstructure, tensile properties and fatigue behaviour of bulk nanoquasicrystalline Al alloy Al93Fe3Cr2Ti2
 Chlupová, Alice ; Chlup, Zdeněk ; Kruml, Tomáš ; Kuběna, Ivo ; Roupcová, Pavla
The characterization of mechanical properties (i.e. stress-strain characteristics measured in tensile and fatigue tests) together with description of the microstructure of bulk nanocrystalline Al alloy is reported. Aluminium based material used in this work was prepared by hot extrusion of gas atomised powder of chemical composition Al93Fe3Cr2Ti2 which contains nanosized quasicrystalline phase. Changes in fracture mechanisms both at fatigue testing performed at room temperature and at tensile tests performed at different test temperatures were investigated. The quality of powder compaction after extrusion was proved as sufficient. Strong texture in longitudinal direction resulting from production route was detected. Presence of icosahedral phase in material was confirmed by TEM and XRD techniques. Fractographical analysis of fracture surface was performed and results were used for description of fracture mechanisms.
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Modelování EBSD obrazců kvazikrystalů
 Buršík, Jiří
Modelling of Electron Backscatter Diffraction Patterns of Quasicrystals.
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