The concept of new-generation steam turbines for the coal power engineering of Russia. Part 2. Substantiating the long-term strength of the steam turbine’s high-temperature rotors

2011 ◽  
Vol 58 (1) ◽  
pp. 58-62
Author(s):  
A. G. Kostyuk ◽  
V. G. Gribin ◽  
A. D. Trukhnii
Keyword(s):  
High Temperature ◽  
Power Engineering ◽  
Term Strength ◽  
Steam Turbines ◽  
Coal Power ◽  
New Generation

scholarly journals Long-Term Strength of a Composition of Complex Refractory Coating and Single-Crystal Rhenium-Alloyed Nickel Alloy after High-Temperature Holds

2013 ◽  
Vol 55 (7-8) ◽  
pp. 403-408
Author(s):  
V. P. Kuznetsov ◽  
V. P. Lesnikov ◽  
E. V. Moroz ◽  
M. S. Khadyev ◽  
I. P. Konakova
Keyword(s):  
High Temperature ◽  
Single Crystal ◽  
Nickel Alloy ◽  
Term Strength ◽  
Refractory Coating ◽  
Alloyed Nickel

Effect of Long-Term Ageing at 600 °C on Microstructure of ZG1Cr10MoWVNbN Martensitic Heat-Resistant Steel

2018 ◽  
Vol 37 (6) ◽  
pp. 539-544
Author(s):  
Chengzhi Zhao ◽  
Ning Li ◽  
Yihan Zhao ◽  
Hexin Zhang
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
M23c6 Carbide ◽  
Resistant Steel ◽  
Steam Turbines ◽  
Heat Resistant Steel ◽  
Property Variation ◽  
Heat Resistant ◽  
Before And After

AbstractA new kind of martensitic ZG1Cr10MoWVNbN heat-resistant steel has been attracted more attentions in recent years, which is mainly applied in ultra-supercritical steam turbines. The ageing property for ZG1Cr10MoWVNbN heat-resistant steel is very important because it often serves for long-time at high-temperature environment. Herein, a long-term ageing heat treatment was conducted on ZG1Cr10MoWVNbN steel at 600 °C heat for 17,000 hours. The microstructure evolution and property variation of the ZG1Cr10MoWVNbN steel were analysed before and after ageing, and also the effect of the precipitates on the mechanical properties was studied. The result showed that strength, the plastic index and impact power of the ZG1Cr10MoWVNbN steel were gradually decreased after long-term and high-temperature ageing at 600 °C due to the changes of martensite morphology and the coarsening of M23C6 carbide precipitation phase. Furthermore, fine precipitation of matrix MX carbide can also attribute to the change of mechanical properties at high temperature.

Prediction of High-Temperature Long-Term Strength of Materials

2013 ◽  
Vol 45 (5) ◽  
pp. 517-522 ◽  
Author(s):  
N. K. Kucher ◽  
R. P. Prikhod’ko
Keyword(s):  
High Temperature ◽  
Term Strength ◽  
Strength Of Materials

Manufacturing Experience in an Advanced 9%CrMoCoVNbNB Alloy for Ultra-Supercritical Steam Turbine Rotor Forgings and Castings

2013 ◽  
Vol 135 (6) ◽  
Author(s):  
Rod Vanstone ◽  
Ian Chilton ◽  
Pawel Jaworski
Keyword(s):  
High Temperature ◽  
Steam Turbine ◽  
Creep Strength ◽  
Stainless Steels ◽  
First Generation ◽  
Turbine Rotor ◽  
Steam Turbines ◽  
Martensitic Stainless Steels ◽  
Operating Temperatures ◽  
New Generation

Advanced 9–12%Cr martensitic stainless steels to enable extension of steam turbine operating temperatures beyond 565 °C have been under development since the 1980s. Steam turbines with operating temperatures approaching 600 °C based on the first generation of these improved alloys, which exploited optimized levels of Mo, W, V, Nb, and N, entered service in the 1990s. Around the same time, a second generation of advanced alloys was developed incorporating additions of Co and B to further enhance creep strength. These alloys have recently been exploited to enable steam turbines with operating temperatures of up to 620 °C, and this new generation of steam turbines is now beginning to enter service. This paper describes the background to the development of these alloys and the experience gained in their application to the manufacture of high temperature rotor forgings and castings.

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