Browsing by Author "Jahodová, Věra"
Now showing 1 - 2 of 2
Results Per Page
Sort Options
- ItemNitrogen S-phase Coatings for Food processing Industry(Technická Univerzita v Liberci, ) Jahodová, Věra
- ItemStruktura a mechanické vlastnosti slitin železa s vysokým obsahem Al a s přísadami titanboridu a zirkonia zejména při vysokých teplotách(Technická Univerzita v Liberci, 2008) Jahodová, Věra; Hanus, PavelDiploma thesis deals with high-temperature behavior of iron-alloys with high volume of aluminium and with additions titanboride and zirconium. Alloys based on Fe3Al are very resistant to oxidation and sulphidation corrosion, investigation deals with improving their low strength and creep resistence in high temperature through legura and thermal treatment. Two new alloys were prepared by vacuum melting, hot rolling and annealing in 1150°C. The influence of thermal treatment was tested (annealing in 700°C and 1150°C), structural changes and hardness changes were determined. Yield stress and ultimate tensile stress were determined through tensile tests within room temperature and 800°C. There was creep resistance determinated, creep tests were performed in stress range 5-180 MPa and in temperature range 600°C - 1000°C. Time to rupture, time to deformation of 1 % and minimal creep rate were determinated.