Vliv tepelného zpracování na stabilitu fází v aluminidech železa legovaných křemíkem
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Práce se zabývá vlivem tepelného zpracování na stabilitu fází v intermetalických slitinách na bázi Fe-Al-Si připravených klasickou technologií odléváním, z nichž dvě byly navíc legovány chromem. Slitiny byly zkoumány ve stavu po odlití a po tepelném zpracování žíháním při 1000 °C po dobu 2, 24 a 100 hodin. Struktura zkoumaných slitin byla pozorována pomocí optické a elektronové mikroskopie. K identifikaci chemického složení fází přítomných ve struktuře byla využita energiově disperzní analýza. U všech tří slitin byla provedena dilatometrická měření a sestrojeny křivky závislosti jejich CTE koeficientů na teplotě.
The work deals with the influence of heat treatment on phase stability in intermetallic alloys based on Fe-Al-Si prepared by classical technology casting. Two of the alloys were alloyed with chromium. The alloys were examined in the as cast state and after heat treatment at 1000 ° C for 2, 24 and 100 hours. The structure of the investigated alloys was studied by optical and electron microscopy. The Energy Dispersive X-ray analysis was used to identify the chemical composition of the phases present in the structure. For all three alloys, dilatometric measurements were performed and the CTE coefficients were evaluated depending on temperature.
The work deals with the influence of heat treatment on phase stability in intermetallic alloys based on Fe-Al-Si prepared by classical technology casting. Two of the alloys were alloyed with chromium. The alloys were examined in the as cast state and after heat treatment at 1000 ° C for 2, 24 and 100 hours. The structure of the investigated alloys was studied by optical and electron microscopy. The Energy Dispersive X-ray analysis was used to identify the chemical composition of the phases present in the structure. For all three alloys, dilatometric measurements were performed and the CTE coefficients were evaluated depending on temperature.
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intermetalické slitiny, ternární slitiny na bázi Fe-Al-Si, tepelné zpracování, stabilita fází, intermetallic alloys, ternary alloys based on Fe-Al-Si, heat treatment, phase stability