Institute of Physics of Materials AS CR, v. v. i. > Projects > Long-term microstructural stability and creep behaviour of advanced 9-12%Cr steels

Long-term microstructural stability and creep behaviour of advanced 9-12%Cr steels

Investigatorprof. Ing. Václav Sklenička, DrSc.
Number of ProjectA106/02/0608
AgencyGrantová agentura České republiky
Duration2001-12-31 - 2004-12-30

Anotace
The idea of this proposal is to carry out systematic study of microstructure-creep property relationship in selected advanced 9-12%Cr steels. The very recent way to achieve the excellent creep properties of these steels at temperatures higher than 600°C has introduced new alloying concepts. Thus, the Project will be focused on the new generation of the tungsten-containing and the cobalt-containing steels. The main aims of the Project are as follows: (i) Evaluation of the compositional effect of selected elements on high temperature creep strength in advamced 9-12%Cr steels. In particular the role of Co and high levels of W and B will be investigated. (ii) Microstructural investigations of advanced 9-12%Cr steels by analytical microscopic techniques, namely microstructural changes in course of long-term thermal ageing and under creep loading to improve description and understanding of the microstructural evolution and stability of advanced 9-12%Cr steels. (iii) Further development and refinement of physical models for phase equilibrium, reaction kinetics and creep strain accumulation with a view to their ultimate combination.


Nic nebylo nalezeno / nothing found