Warianty tytułu
Języki publikacji
Abstrakty
The paper presents the influence of heat treatment, normalization with subsequent ([alpha]+[gamma]) annealing on the structure and properties of G21CrMoV4-6 (L21HMF) cast steel, long term serviced at the temp. of 540 oC. Applying of heat treatment ensures obtaining of regenerated ferritic – pearlitic structure with pearlite precipitations mainly on grain boundaries. such a structure formed after slow cooling at two-phase range, ensures a significant impact energy growth with mechanical properties similar to the properties after service. It has also been proved that tempering at temperatures recommended by the norm does not always allow to obtain the required minimum impact energy.
Słowa kluczowe
Czasopismo
Rocznik
Tom
Strony
123-126
Opis fizyczny
Bibliogr. 15 poz., rys., tab.
Twórcy
autor
autor
autor
autor
- Institute of Materials Engineering, Czestochowa University of Technology, grisza@mim.pcz.czest.pl
Bibliografia
- [1] Balyts'kyi O.I, Ripei I.V., Protsakh Kh. A. - Degradation of the cast elements of steam turbines of thermal power plants made of 20KhMFL steel in the course of long - term operation, Materials Science, 41, 3, 2005, 423 - 426
- [2] Renowicz D., Hernas A., Cieśla M., Mutwil K. - Degradation of the cast steel parts working in power plant pipelines, J. of Achievements in Materials and Manufracturing Engineering, 18, 2006, 219 - 222
- [3] Stachura S., - The changes of structure and mechanical properties of steels and cast steels after long term serviced at elevated temperatures, Energetic, 2, 1999, 109-113 (in Polish)
- [4] Stachura S., Stradomski Z., Golański G., - Phosphorus in ferroalloys, Hutnik - Wiadomości Hutnicze, 5, 2001, 184 - 193 (in Polish)
- [5] Szostak M., Rehmus - Forc A. - Strengh and termodynamic analises of new constructions which mate of which old steam turbine parts, Archives of Foundry, 6, 21, 2006, 297 - 308 (in Polish)
- [6] Islam M. A., Knott J.F., Bowen P. - Kinetics of phosphorus segregation and its effect on low temperature fracture behaviour in 2.25Cr - 1Mo pressure vessel steel, Materials Sc. and Techn., vol.21, No.1, 2005, 76 - 84
- [7] Stachura S., Kupczyk J., Gucwa M. - Optimization of structure and properties of Cr - Mo and Cr - Mo - V cast steel intended for use at increased temperature, Przeglad Odlewnictwa 54, 5, 2004, 402 - 408
- [8] Golański G., Stachura S., Gajda B., Kupczyk J., - Influence of the cooling rate on structure and mechanical properties of L21HMF cast steel after regenerative heat treatment, Archives of Foundary, 6,21, 2006, 143 - 150 (in Polish)
- [9] Stachura S., Golanski G., Kupczyk J. - not published
- [10] Trzeszczyński J., Grzesiczek E., Brunne W. - Effectiveness of solutions extending operation time of long operated cast steel elements of steam turbines and steam pipelines, Energetic, 3, 2006, 179-184 (in Polish)
- [11] Dobosiewicz J.,- Present experience connected with the revitalization of steam turbine cylinders, Energetic, 50, 1, 1996, 39 - 41 (in Polish)
- [12] Rehmus - Forc A. - Change of structure after revitalization cylinders of a steam turbine, Materials Science and Engineering , 2006, 3, 265 - 267 (in Polish)
- [13] Dudziński K., Dudziński K., Pękalska L., Pękalski G. - Welding and regenerative heat treatment of steam turbine castings, Materials Science and Engineering, 6, 2003, 712 ÷ 715 (in Polish)
- [14] PN - 89/ H - 83157 - Steel castings creep resistant at elevated temperatures. Grades ( in Polish)
- [15] Golański G., Kupczyk J., Stachura S., Gajda B., - Regenerative heat treatment of Cr - Mo - V cast steel after long term serviced, Materials Science and Engineering", 3, 2006, 147 - 150 (in Polish).
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.baztech-article-BPZ3-0033-0043