A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Structural Features and High-Temperature Strength of the Metal of Centrifugally Cast Tubes from Steel 15Kh1M1F
Abstract Special features of the structure and properties of the metal of centrifugally cast large-diameter tubes from steel 15Kh1M1F used in hot reheat steam conduits of high-power generating units are discussed. The metal of the tubes in the initial state is shown to possess structural heterogeneity primarily represented by segregation bands. The segregation bands are responsible for scattering of the mechanical properties and a 5 – 10% decrease in the long-term strength in the initial condition. The decline of the long-term strength intensifies with the propagation of the segregation over the cross section of the tubes. The segregation lowers the stability of the structure and properties of the tubes in operation at a high level of long-term plasticity. By reducing the degree of segregation in centrifugally cast tubes the time of their operation in steam conduits can be increased to 200,000 h.
Structural Features and High-Temperature Strength of the Metal of Centrifugally Cast Tubes from Steel 15Kh1M1F
Abstract Special features of the structure and properties of the metal of centrifugally cast large-diameter tubes from steel 15Kh1M1F used in hot reheat steam conduits of high-power generating units are discussed. The metal of the tubes in the initial state is shown to possess structural heterogeneity primarily represented by segregation bands. The segregation bands are responsible for scattering of the mechanical properties and a 5 – 10% decrease in the long-term strength in the initial condition. The decline of the long-term strength intensifies with the propagation of the segregation over the cross section of the tubes. The segregation lowers the stability of the structure and properties of the tubes in operation at a high level of long-term plasticity. By reducing the degree of segregation in centrifugally cast tubes the time of their operation in steam conduits can be increased to 200,000 h.
Structural Features and High-Temperature Strength of the Metal of Centrifugally Cast Tubes from Steel 15Kh1M1F
Perevezentseva, T. V. (author) / Zlepko, V. F. (author) / Kalugin, R. N. (author)
Power Technology and Engineering ; 36 ; 145-151
2002-05-01
7 pages
Article (Journal)
Electronic Resource
English
thermal power plant , steam conduit , centrifugally cast tubes , long-term strength , long-term plasticity , banding segregation , service life , heterogeneity , steel , zones , structure , metal , deformed tubes , bainite , ferrite , homogenization Engineering , Energy Technology , Power Electronics, Electrical Machines and Networks , Renewable and Green Energy , Geoengineering, Foundations, Hydraulics
Metal Dusting of Centrifugally Cast Superalloys
| British Library Online Contents | 2011
Wiley | 1927
Internal stresses in pipes of centrifugally cast steel
| Engineering Index Backfile | 1945