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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
The exploitation of thermodynamic calculations for optimalization of chemical composition of ferritic heat resistant steels
 Foldyna, V. ; Kroupa, Aleš ; Kuboň, Z. ; Jakobová, A. ; Vodárek, V.
The thermodznamic calculations allow to predict the amount of Mo and/or W in the solid solution and the amount of V and/or Nb bound in the nitride or carbide. The observed structural changes found during the creep exposure confirm the usefullness of the thermodynamic calculations especially for the modification of chemical composition of known types of steels and also for the proposal of new steels.
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Hodnocení creepové odolnosti reálných konstrukčních dílů pomocí techniky malých vtisků
 Dobeš, Ferdinand ; Milička, Karel ; Sobotka, J. ; Kuboň, Z.
Local creep properties of power-plant pipeline and its weld after long-term service were studied by means of small punch tests and conventional tensile creep tests. The small punch technique enables the estimation of the dependence of creep properties on the position in the pipe wall. The technique also appears to be useful for a characterization and analysis of creep strength of selected localities in welds.
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